Added estimaded salary to dashboard

Reviewed-on: #5

apps/backend/prisma/migrations/20260617122516_add_wallets/migration.sql

@@ -0,0 +1,34 @@
+-- CreateTable
+CREATE TABLE "wallets" (
+    "id" SERIAL NOT NULL,
+    "name" VARCHAR(100) NOT NULL,
+    "currency" VARCHAR(10) NOT NULL,
+    "balance" DECIMAL(14,4) NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "wallets_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "wallet_movements" (
+    "id" SERIAL NOT NULL,
+    "walletId" INTEGER NOT NULL,
+    "type" VARCHAR(20) NOT NULL,
+    "amount" DECIMAL(14,4) NOT NULL,
+    "description" VARCHAR(255),
+    "referenceWalletId" INTEGER,
+    "transferGroupId" UUID,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "wallet_movements_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "wallet_movements_walletId_idx" ON "wallet_movements"("walletId");
+
+-- CreateIndex
+CREATE INDEX "wallet_movements_transferGroupId_idx" ON "wallet_movements"("transferGroupId");
+
+-- AddForeignKey
+ALTER TABLE "wallet_movements" ADD CONSTRAINT "wallet_movements_walletId_fkey" FOREIGN KEY ("walletId") REFERENCES "wallets"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

apps/backend/prisma/migrations/20260617131039_add_wallet_is_default/migration.sql

@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "wallets" ADD COLUMN     "isDefault" BOOLEAN NOT NULL DEFAULT false;

apps/backend/prisma/migrations/20260617132653_add_wallet_id_to_expense/migration.sql

@@ -0,0 +1,8 @@
+-- AlterTable
+ALTER TABLE "expenses" ADD COLUMN     "walletId" INTEGER;
+
+-- CreateIndex
+CREATE INDEX "expenses_walletId_idx" ON "expenses"("walletId");
+
+-- AddForeignKey
+ALTER TABLE "expenses" ADD CONSTRAINT "expenses_walletId_fkey" FOREIGN KEY ("walletId") REFERENCES "wallets"("id") ON DELETE SET NULL ON UPDATE CASCADE;

apps/backend/prisma/migrations/20260722152402_add_settings/migration.sql

@@ -0,0 +1,13 @@
+-- CreateTable
+CREATE TABLE "settings" (
+    "key" TEXT NOT NULL,
+    "value" TEXT NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "settings_pkey" PRIMARY KEY ("key")
+);
+
+-- Seed
+INSERT INTO "settings" ("key", "value", "createdAt", "updatedAt")
+VALUES ('salary_multiplier', '4500', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP);

apps/backend/prisma/schema.prisma

@@ -122,6 +122,15 @@ model QuoteHistory {
   @@map("quotes_history")
 }
 
+model Setting {
+  key       String   @id
+  value     String
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+
+  @@map("settings")
+}
+
 // Expenses
 
 enum PaymentStatus {
@@ -129,6 +138,37 @@ enum PaymentStatus {
   PAYED
 }
 
+model Wallet {
+  id        Int       @id @default(autoincrement())
+  name      String    @db.VarChar(100)
+  currency  String    @db.VarChar(10)
+  balance   Decimal   @db.Decimal(14, 4)
+  isDefault Boolean   @default(false)
+  createdAt DateTime  @default(now())
+  updatedAt DateTime  @updatedAt
+
+  movements WalletMovement[]
+  expenses  Expense[]
+
+  @@map("wallets")
+}
+
+model WalletMovement {
+  id                Int       @id @default(autoincrement())
+  walletId          Int
+  wallet            Wallet    @relation(fields: [walletId], references: [id])
+  type              String    @db.VarChar(20)
+  amount            Decimal   @db.Decimal(14, 4)
+  description       String?   @db.VarChar(255)
+  referenceWalletId Int?
+  transferGroupId   String?   @db.Uuid
+  createdAt         DateTime  @default(now())
+
+  @@index([walletId])
+  @@index([transferGroupId])
+  @@map("wallet_movements")
+}
+
 model PeriodicExpense {
   id            Int       @id @default(autoincrement())
   description   String    @db.VarChar(50)
@@ -157,6 +197,9 @@ model Expense {
   status            PaymentStatus    @default(PENDING)
   dueDate           DateTime
   paymentDate       DateTime?
+  walletId          Int?
+  wallet            Wallet?          @relation(fields: [walletId], references: [id])
 
+  @@index([walletId])
   @@map("expenses")
 }

apps/backend/src/index.ts

@@ -11,7 +11,9 @@ import { startExpenseJob } from "./modules/expenses/expense.job";
 import expensesRouter from "./modules/expenses/expenses.routes";
 import { startQuoteJob } from "./modules/quotes/quote.job";
 import quotesRouter from "./modules/quotes/quotes.routes";
+import settingsRouter from "./modules/settings/settings.routes";
 import telegramRouter from "./modules/telegram/telegram.router";
+import walletsRouter from "./modules/wallets/wallets.routes";
 
 const app = new Hono();
 
@@ -31,8 +33,10 @@ app.use("/api/*", async (c, next) => {
 });
 
 app.route("/api/quotes", quotesRouter);
+app.route("/api/settings", settingsRouter);
 app.route("/api", expensesRouter);
 app.route("/api/telegram", telegramRouter);
+app.route("/api/wallets", walletsRouter);
 
 app.use("/assets/*", serveStatic({ root: "./web" }));
 app.get("*", serveStatic({ path: "./web/index.html" }));

apps/backend/src/modules/expenses/expenses.service.ts

@@ -1,5 +1,5 @@
 import { z } from "zod";
-import { PaymentStatus, QuoteType, Prisma } from "../../generated/prisma/client";
+import { PaymentStatus, QuoteType, type Prisma } from "../../generated/prisma/client";
 import { cache } from "../../lib/cache";
 import { prisma } from "../../lib/prisma";
 import { roundTo } from "../../lib/utils";
@@ -17,11 +17,15 @@ export const createNonPeriodicExpenseSchema = z.object({
   description: z.string().min(1).max(50),
   amount: z.number().positive(),
   dueDate: z.string().datetime(),
+  walletId: z.number().int().positive(),
+  usdcConversionRate: z.number().positive().optional(),
 });
 
 export const payExpenseSchema = z.object({
   amountPayed: z.number().positive(),
   paymentDate: z.string().datetime().optional(),
+  walletId: z.number().int().positive(),
+  usdcConversionRate: z.number().positive().optional(),
 });
 
 export const updateExpenseSchema = z.object({
@@ -226,23 +230,65 @@ export async function createNonPeriodicExpense(
   const year = dueDate.getUTCFullYear();
   const month = dueDate.getUTCMonth() + 1;
 
-  const belo = await getBeloSellPriceForDate(dueDate);
-
-  const result = await prisma.expense.create({
-    data: {
-      description: data.description,
-      amount: data.amount,
-      amountPayed: data.amount,
-      dueDate,
-      paymentDate: dueDate,
-      year,
-      month,
-      status: PaymentStatus.PAYED,
-      ...(belo !== null
-        ? { beloPrice: belo, usdcEquivalent: roundTo(data.amount / belo, 6) }
-        : {}),
-    },
+  const wallet = await prisma.wallet.findUnique({
+    where: { id: data.walletId },
   });
+  if (!wallet) {
+    throw new Error("Billetera no encontrada");
+  }
+
+  const isUSDC = wallet.currency === "USDC";
+
+  if (isUSDC && !data.usdcConversionRate) {
+    throw new Error("La tasa de conversión es obligatoria para billeteras USDC");
+  }
+
+  const belo = isUSDC ? null : await getBeloSellPriceForDate(dueDate);
+
+  const movementAmount =
+    isUSDC && data.usdcConversionRate
+      ? -roundTo(data.amount / data.usdcConversionRate, 4)
+      : -data.amount;
+
+  const expenseData: Prisma.ExpenseUncheckedCreateInput = {
+    description: data.description,
+    amount: data.amount,
+    amountPayed: data.amount,
+    dueDate,
+    paymentDate: dueDate,
+    year,
+    month,
+    status: PaymentStatus.PAYED,
+    walletId: data.walletId,
+  };
+
+  if (isUSDC && data.usdcConversionRate) {
+    expenseData.beloPrice = data.usdcConversionRate;
+    expenseData.usdcEquivalent = roundTo(
+      data.amount / data.usdcConversionRate,
+      6,
+    );
+  } else if (belo !== null) {
+    expenseData.beloPrice = belo;
+    expenseData.usdcEquivalent = roundTo(data.amount / belo, 6);
+  }
+
+  const [result] = await prisma.$transaction([
+    prisma.expense.create({ data: expenseData }),
+    prisma.wallet.update({
+      where: { id: data.walletId },
+      data: { balance: { increment: movementAmount } },
+    }),
+    prisma.walletMovement.create({
+      data: {
+        walletId: data.walletId,
+        type: "WITHDRAWAL",
+        amount: movementAmount,
+        description: `Pago: ${data.description}`,
+      },
+    }),
+  ]);
+
   cache.invalidateByPrefix("expenses:");
   return result;
 }
@@ -251,23 +297,62 @@ export async function payExpense(
   id: number,
   data: z.infer<typeof payExpenseSchema>,
 ) {
+  const expense = await prisma.expense.findUniqueOrThrow({ where: { id } });
+
   const paymentDate = data.paymentDate
     ? new Date(data.paymentDate)
     : new Date();
 
-  const belo = await getBeloSellPriceForDate(paymentDate);
-
-  const result = await prisma.expense.update({
-    where: { id },
-    data: {
-      status: PaymentStatus.PAYED,
-      amountPayed: data.amountPayed,
-      paymentDate,
-      ...(belo !== null
-        ? { beloPrice: belo, usdcEquivalent: roundTo(data.amountPayed / belo, 6) }
-        : {}),
-    },
+  const wallet = await prisma.wallet.findUnique({
+    where: { id: data.walletId },
   });
+  if (!wallet) {
+    throw new Error("Billetera no encontrada");
+  }
+
+  const isUSDC = wallet.currency === "USDC";
+
+  if (isUSDC && !data.usdcConversionRate) {
+    throw new Error("La tasa de conversión es obligatoria para billeteras USDC");
+  }
+
+  const belo = isUSDC ? null : await getBeloSellPriceForDate(paymentDate);
+
+  const movementAmount = isUSDC && data.usdcConversionRate
+    ? -roundTo(data.amountPayed / data.usdcConversionRate, 4)
+    : -data.amountPayed;
+
+  const expenseUpdateData: Prisma.ExpenseUncheckedUpdateInput = {
+    status: PaymentStatus.PAYED,
+    amountPayed: data.amountPayed,
+    paymentDate,
+    walletId: data.walletId,
+  };
+
+  if (isUSDC && data.usdcConversionRate) {
+    expenseUpdateData.beloPrice = data.usdcConversionRate;
+    expenseUpdateData.usdcEquivalent = roundTo(data.amountPayed / data.usdcConversionRate, 6);
+  } else if (belo !== null) {
+    expenseUpdateData.beloPrice = belo;
+    expenseUpdateData.usdcEquivalent = roundTo(data.amountPayed / belo, 6);
+  }
+
+  const [result] = await prisma.$transaction([
+    prisma.expense.update({ where: { id }, data: expenseUpdateData }),
+    prisma.wallet.update({
+      where: { id: data.walletId },
+      data: { balance: { increment: movementAmount } },
+    }),
+    prisma.walletMovement.create({
+      data: {
+        walletId: data.walletId,
+        type: "WITHDRAWAL",
+        amount: movementAmount,
+        description: `Pago: ${expense.description}`,
+      },
+    }),
+  ]);
+
   cache.invalidateByPrefix("expenses:");
   return result;
 }
@@ -289,12 +374,29 @@ export async function updateExpense(
     month,
   };
 
+  let walletAdjustment: {
+    walletId: number;
+    amount: number;
+    description: string;
+  } | null = null;
+
   if (data.status === "PENDING") {
     updateData.status = PaymentStatus.PENDING;
     updateData.amountPayed = null;
     updateData.paymentDate = null;
     updateData.beloPrice = null;
     updateData.usdcEquivalent = null;
+
+    if (existing.status === PaymentStatus.PAYED && existing.walletId) {
+      const refundAmount = existing.amountPayed
+        ? Number(existing.amountPayed)
+        : Number(existing.amount);
+      walletAdjustment = {
+        walletId: existing.walletId,
+        amount: refundAmount,
+        description: "Anulación de gasto",
+      };
+    }
   } else if (existing.status === PaymentStatus.PAYED) {
     if (data.amountPayed !== undefined) {
       updateData.amountPayed = data.amountPayed;
@@ -317,6 +419,51 @@ export async function updateExpense(
         updateData.usdcEquivalent = null;
       }
     }
+
+    if (existing.walletId) {
+      const oldPayed = existing.amountPayed
+        ? Number(existing.amountPayed)
+        : Number(existing.amount);
+      const newPayed = data.amountPayed !== undefined
+        ? Number(data.amountPayed)
+        : Number(data.amount);
+
+      if (newPayed !== oldPayed) {
+        const difference = newPayed - oldPayed;
+        walletAdjustment = {
+          walletId: existing.walletId,
+          amount: -difference,
+          description: "Ajuste por edición de gasto",
+        };
+      }
+    }
+  }
+
+  if (walletAdjustment) {
+    const wallet = await prisma.wallet.findUnique({
+      where: { id: walletAdjustment.walletId },
+    });
+    if (!wallet) {
+      throw new Error("Billetera no encontrada");
+    }
+
+    const [result] = await prisma.$transaction([
+      prisma.expense.update({ where: { id }, data: updateData }),
+      prisma.wallet.update({
+        where: { id: walletAdjustment.walletId },
+        data: { balance: { increment: walletAdjustment.amount } },
+      }),
+      prisma.walletMovement.create({
+        data: {
+          walletId: walletAdjustment.walletId,
+          type: walletAdjustment.amount > 0 ? "DEPOSIT" : "WITHDRAWAL",
+          amount: walletAdjustment.amount,
+          description: walletAdjustment.description,
+        },
+      }),
+    ]);
+    cache.invalidateByPrefix("expenses:");
+    return result;
   }
 
   const result = await prisma.expense.update({

apps/backend/src/modules/settings/settings.handler.ts

@@ -0,0 +1,29 @@
+import type { Context } from "hono";
+import { cache } from "../../lib/cache";
+import { prisma } from "../../lib/prisma";
+
+export async function getSettings(c: Context) {
+  const cached = cache.get("settings:all");
+  if (cached) return c.json(cached);
+
+  const settings = await prisma.setting.findMany();
+  cache.set("settings:all", settings, 60_000);
+  return c.json(settings);
+}
+
+export async function updateSetting(c: Context) {
+  const body = await c.req.json<{ key: string; value: string }>();
+
+  if (!body.key || body.value === undefined) {
+    return c.json({ error: "key and value are required" }, 400);
+  }
+
+  const setting = await prisma.setting.upsert({
+    where: { key: body.key },
+    update: { value: body.value },
+    create: { key: body.key, value: body.value },
+  });
+
+  cache.invalidateByPrefix("settings:");
+  return c.json(setting);
+}

apps/backend/src/modules/settings/settings.routes.ts

@@ -0,0 +1,9 @@
+import { Hono } from "hono";
+import { getSettings, updateSetting } from "./settings.handler";
+
+const app = new Hono();
+
+app.get("/", getSettings);
+app.put("/", updateSetting);
+
+export default app;

apps/backend/src/modules/wallets/handlers/adjustBalance.ts

@@ -0,0 +1,13 @@
+import type { Context } from "hono";
+import {
+  adjustBalance,
+  adjustBalanceSchema,
+} from "../wallets.service";
+
+export async function adjustBalanceHandler(c: Context) {
+  const id = Number(c.req.param("id"));
+  const body = await c.req.json();
+  const parsed = adjustBalanceSchema.parse(body);
+  const result = await adjustBalance(id, parsed);
+  return c.json(result);
+}

apps/backend/src/modules/wallets/handlers/createWallet.ts

@@ -0,0 +1,12 @@
+import type { Context } from "hono";
+import {
+  createWallet,
+  createWalletSchema,
+} from "../wallets.service";
+
+export async function createWalletHandler(c: Context) {
+  const body = await c.req.json();
+  const parsed = createWalletSchema.parse(body);
+  const result = await createWallet(parsed);
+  return c.json(result, 201);
+}

apps/backend/src/modules/wallets/handlers/deleteWallet.ts

@@ -0,0 +1,8 @@
+import type { Context } from "hono";
+import { deleteWallet } from "../wallets.service";
+
+export async function deleteWalletHandler(c: Context) {
+  const id = Number(c.req.param("id"));
+  await deleteWallet(id);
+  return c.json({ success: true });
+}

apps/backend/src/modules/wallets/handlers/depositWallet.ts

@@ -0,0 +1,13 @@
+import type { Context } from "hono";
+import {
+  depositWallet,
+  depositSchema,
+} from "../wallets.service";
+
+export async function depositWalletHandler(c: Context) {
+  const id = Number(c.req.param("id"));
+  const body = await c.req.json();
+  const parsed = depositSchema.parse(body);
+  const result = await depositWallet(id, parsed);
+  return c.json(result);
+}

apps/backend/src/modules/wallets/handlers/listAllMovements.ts

@@ -0,0 +1,21 @@
+import type { Context } from "hono";
+import { listAllMovements } from "../wallets.service";
+
+export async function listAllMovementsHandler(c: Context) {
+  const walletId = c.req.query("walletId")
+    ? Number(c.req.query("walletId"))
+    : undefined;
+  const startDate = c.req.query("startDate") || undefined;
+  const endDate = c.req.query("endDate") || undefined;
+  const page = parseInt(c.req.query("page") ?? "1", 10);
+  const pageSize = parseInt(c.req.query("pageSize") ?? "20", 10);
+
+  const result = await listAllMovements({
+    walletId,
+    startDate,
+    endDate,
+    page,
+    pageSize,
+  });
+  return c.json(result);
+}

apps/backend/src/modules/wallets/handlers/listMovements.ts

@@ -0,0 +1,8 @@
+import type { Context } from "hono";
+import { listMovements } from "../wallets.service";
+
+export async function listMovementsHandler(c: Context) {
+  const id = Number(c.req.param("id"));
+  const result = await listMovements(id);
+  return c.json(result);
+}

apps/backend/src/modules/wallets/handlers/listWallets.ts

@@ -0,0 +1,7 @@
+import type { Context } from "hono";
+import { listWallets } from "../wallets.service";
+
+export async function listWalletsHandler(c: Context) {
+  const result = await listWallets();
+  return c.json(result);
+}

apps/backend/src/modules/wallets/handlers/setDefaultWallet.ts

@@ -0,0 +1,8 @@
+import type { Context } from "hono";
+import { setDefaultWallet } from "../wallets.service";
+
+export async function setDefaultWalletHandler(c: Context) {
+  const id = Number(c.req.param("id"));
+  const result = await setDefaultWallet(id);
+  return c.json(result);
+}

apps/backend/src/modules/wallets/handlers/transferWallet.ts

@@ -0,0 +1,12 @@
+import type { Context } from "hono";
+import {
+  transferSchema,
+  transferWallet,
+} from "../wallets.service";
+
+export async function transferWalletHandler(c: Context) {
+  const body = await c.req.json();
+  const parsed = transferSchema.parse(body);
+  const result = await transferWallet(parsed);
+  return c.json(result);
+}

apps/backend/src/modules/wallets/handlers/updateWallet.ts

@@ -0,0 +1,13 @@
+import type { Context } from "hono";
+import {
+  updateWallet,
+  updateWalletSchema,
+} from "../wallets.service";
+
+export async function updateWalletHandler(c: Context) {
+  const id = Number(c.req.param("id"));
+  const body = await c.req.json();
+  const parsed = updateWalletSchema.parse(body);
+  const result = await updateWallet(id, parsed);
+  return c.json(result);
+}

apps/backend/src/modules/wallets/wallets.routes.ts

@@ -0,0 +1,26 @@
+import { Hono } from "hono";
+import { adjustBalanceHandler } from "./handlers/adjustBalance";
+import { createWalletHandler } from "./handlers/createWallet";
+import { deleteWalletHandler } from "./handlers/deleteWallet";
+import { depositWalletHandler } from "./handlers/depositWallet";
+import { listAllMovementsHandler } from "./handlers/listAllMovements";
+import { listMovementsHandler } from "./handlers/listMovements";
+import { listWalletsHandler } from "./handlers/listWallets";
+import { transferWalletHandler } from "./handlers/transferWallet";
+import { updateWalletHandler } from "./handlers/updateWallet";
+import { setDefaultWalletHandler } from "./handlers/setDefaultWallet";
+
+const app = new Hono();
+
+app.get("/movements", listAllMovementsHandler);
+app.get("/", listWalletsHandler);
+app.post("/", createWalletHandler);
+app.put("/:id", updateWalletHandler);
+app.delete("/:id", deleteWalletHandler);
+app.post("/:id/deposit", depositWalletHandler);
+app.post("/:id/adjust", adjustBalanceHandler);
+app.post("/transfer", transferWalletHandler);
+app.put("/:id/default", setDefaultWalletHandler);
+app.get("/:id/movements", listMovementsHandler);
+
+export default app;

apps/backend/src/modules/wallets/wallets.service.ts

@@ -0,0 +1,243 @@
+import { z } from "zod";
+import { Prisma } from "../../generated/prisma/client";
+import { prisma } from "../../lib/prisma";
+import { cache } from "../../lib/cache";
+
+export const createWalletSchema = z.object({
+  name: z.string().min(1).max(100),
+  currency: z.string().min(1).max(10),
+  initialBalance: z.number().optional().default(0),
+  isDefault: z.boolean().optional().default(false),
+});
+
+export const updateWalletSchema = z.object({
+  name: z.string().min(1).max(100),
+  currency: z.string().min(1).max(10),
+});
+
+export const setDefaultWalletSchema = z.object({
+  walletId: z.number().int().positive(),
+});
+
+export const depositSchema = z.object({
+  amount: z.number().positive(),
+  description: z.string().max(255).optional(),
+});
+
+export const adjustBalanceSchema = z.object({
+  newBalance: z.number().min(0),
+  description: z.string().max(255).optional(),
+});
+
+export const transferSchema = z.object({
+  fromWalletId: z.number().int().positive(),
+  toWalletId: z.number().int().positive(),
+  outgoingAmount: z.number().positive(),
+  incomingAmount: z.number().positive(),
+  description: z.string().max(255).optional(),
+});
+
+export type CreateWalletInput = z.infer<typeof createWalletSchema>;
+export type UpdateWalletInput = z.infer<typeof updateWalletSchema>;
+export type DepositInput = z.infer<typeof depositSchema>;
+export type AdjustBalanceInput = z.infer<typeof adjustBalanceSchema>;
+export type TransferInput = z.infer<typeof transferSchema>;
+export type SetDefaultWalletInput = z.infer<typeof setDefaultWalletSchema>;
+
+export async function listWallets() {
+  const wallets = await prisma.wallet.findMany({
+    orderBy: [{ isDefault: "desc" }, { createdAt: "desc" }],
+  });
+  return wallets.map((w) => ({ ...w, balance: Number(w.balance) }));
+}
+
+export async function createWallet(input: CreateWalletInput) {
+  const wallet = await prisma.wallet.create({
+    data: {
+      name: input.name,
+      currency: input.currency,
+      balance: input.initialBalance ?? 0,
+      isDefault: input.isDefault ?? false,
+    },
+  });
+  if (wallet.isDefault) {
+    await prisma.wallet.updateMany({
+      where: { id: { not: wallet.id }, isDefault: true },
+      data: { isDefault: false },
+    });
+  }
+  return { ...wallet, balance: Number(wallet.balance) };
+}
+
+export async function updateWallet(id: number, input: UpdateWalletInput) {
+  const wallet = await prisma.wallet.update({
+    where: { id },
+    data: { name: input.name, currency: input.currency },
+  });
+  return { ...wallet, balance: Number(wallet.balance) };
+}
+
+export async function deleteWallet(id: number) {
+  const wallet = await prisma.wallet.findUniqueOrThrow({ where: { id } });
+  if (Number(wallet.balance) !== 0) {
+    throw new Error("No se puede eliminar una billetera con saldo distinto de cero");
+  }
+  await prisma.walletMovement.deleteMany({ where: { walletId: id } });
+  await prisma.wallet.delete({ where: { id } });
+}
+
+export async function depositWallet(id: number, input: DepositInput) {
+  const [wallet] = await prisma.$transaction([
+    prisma.wallet.update({
+      where: { id },
+      data: { balance: { increment: input.amount } },
+    }),
+    prisma.walletMovement.create({
+      data: {
+        walletId: id,
+        type: "DEPOSIT",
+        amount: input.amount,
+        description: input.description ?? null,
+      },
+    }),
+  ]);
+  return { ...wallet, balance: Number(wallet.balance) };
+}
+
+export async function adjustBalance(id: number, input: AdjustBalanceInput) {
+  const wallet = await prisma.wallet.findUniqueOrThrow({ where: { id } });
+  const currentBalance = Number(wallet.balance);
+  const difference = input.newBalance - currentBalance;
+
+  const [updated] = await prisma.$transaction([
+    prisma.wallet.update({
+      where: { id },
+      data: { balance: input.newBalance },
+    }),
+    prisma.walletMovement.create({
+      data: {
+        walletId: id,
+        type: "ADJUSTMENT",
+        amount: difference,
+        description: input.description ?? null,
+      },
+    }),
+  ]);
+  return { ...updated, balance: Number(updated.balance) };
+}
+
+export async function transferWallet(input: TransferInput) {
+  const groupId = crypto.randomUUID();
+
+  const [fromWallet, toWallet] = await prisma.$transaction(async (tx) => {
+    const from = await tx.wallet.update({
+      where: { id: input.fromWalletId },
+      data: { balance: { decrement: input.outgoingAmount } },
+    });
+
+    const to = await tx.wallet.update({
+      where: { id: input.toWalletId },
+      data: { balance: { increment: input.incomingAmount } },
+    });
+
+    await tx.walletMovement.create({
+      data: {
+        walletId: input.fromWalletId,
+        type: "TRANSFER_OUT",
+        amount: -input.outgoingAmount,
+        description: input.description ?? null,
+        referenceWalletId: input.toWalletId,
+        transferGroupId: groupId,
+      },
+    });
+
+    await tx.walletMovement.create({
+      data: {
+        walletId: input.toWalletId,
+        type: "TRANSFER_IN",
+        amount: input.incomingAmount,
+        description: input.description ?? null,
+        referenceWalletId: input.fromWalletId,
+        transferGroupId: groupId,
+      },
+    });
+
+    return [from, to];
+  });
+
+  return {
+    from: { ...fromWallet, balance: Number(fromWallet.balance) },
+    to: { ...toWallet, balance: Number(toWallet.balance) },
+  };
+}
+
+export async function setDefaultWallet(walletId: number) {
+  await prisma.$transaction([
+    prisma.wallet.updateMany({
+      where: { isDefault: true },
+      data: { isDefault: false },
+    }),
+    prisma.wallet.update({
+      where: { id: walletId },
+      data: { isDefault: true },
+    }),
+  ]);
+  const wallet = await prisma.wallet.findUniqueOrThrow({ where: { id: walletId } });
+  return { ...wallet, balance: Number(wallet.balance) };
+}
+
+export async function listMovements(walletId: number) {
+  const movements = await prisma.walletMovement.findMany({
+    where: { walletId },
+    orderBy: { createdAt: "desc" },
+  });
+  return movements.map((m) => ({ ...m, amount: Number(m.amount) }));
+}
+
+export async function listAllMovements(params: {
+  walletId?: number;
+  startDate?: string;
+  endDate?: string;
+  page?: number;
+  pageSize?: number;
+}) {
+  const { walletId, startDate, endDate, page = 1, pageSize = 20 } = params;
+
+  const cacheKey = `movements:all:${walletId ?? "all"}:${startDate ?? ""}:${endDate ?? ""}:${page}:${pageSize}`;
+  const cached = cache.get(cacheKey);
+  if (cached) return cached;
+
+  const where: Record<string, unknown> = {};
+  if (walletId !== undefined) {
+    where.walletId = walletId;
+  }
+  if (startDate || endDate) {
+    const createdAt: Record<string, Date> = {};
+    if (startDate) createdAt.gte = new Date(startDate);
+    if (endDate) {
+      const end = new Date(endDate);
+      end.setHours(23, 59, 59, 999);
+      createdAt.lte = end;
+    }
+    where.createdAt = createdAt;
+  }
+
+  const [data, total] = await Promise.all([
+    prisma.walletMovement.findMany({
+      where,
+      orderBy: { createdAt: "desc" },
+      skip: (page - 1) * pageSize,
+      take: pageSize,
+    }),
+    prisma.walletMovement.count({ where }),
+  ]);
+
+  const result = {
+    data: data.map((m) => ({ ...m, amount: Number(m.amount) })),
+    total,
+    page,
+    pageSize,
+  };
+  cache.set(cacheKey, result);
+  return result;
+}

apps/backend/tests/expenses.test.ts

@@ -1,7 +1,15 @@
 import { beforeEach, describe, expect, mock, test } from "bun:test";
 import { PaymentStatus } from "../src/generated/prisma/client";
 
+const mockWalletFindUnique = mock();
+const mockWalletUpdate = mock();
+const mockMovementCreate = mock();
+const mockTransaction = mock(async (operations: Array<Promise<unknown>>) =>
+  Promise.all(operations),
+);
+
 const mockPrisma = {
+  $transaction: mockTransaction,
   periodicExpense: {
     findMany: mock(),
     findUniqueOrThrow: mock(),
@@ -16,6 +24,13 @@ const mockPrisma = {
     update: mock(),
     count: mock(),
   },
+  wallet: {
+    findUnique: mockWalletFindUnique,
+    update: mockWalletUpdate,
+  },
+  walletMovement: {
+    create: mockMovementCreate,
+  },
   quote: {
     findFirst: mock(),
   },
@@ -30,6 +45,7 @@ mock.module("../src/lib/prisma", () => ({
 
 beforeEach(() => {
   for (const model of Object.values(mockPrisma)) {
+    if (typeof model === "function") continue;
     for (const fn of Object.values(
       model as Record<string, ReturnType<typeof mock>>,
     )) {
@@ -155,6 +171,7 @@ describe("schemas", () => {
         description: "Ropa",
         amount: 2500,
         dueDate: "2026-06-15T00:00:00.000Z",
+        walletId: 1,
       });
       expect(result.description).toBe("Ropa");
     });
@@ -175,12 +192,16 @@ describe("schemas", () => {
       const result = payExpenseSchema.parse({
         amountPayed: 1400,
         paymentDate: "2026-06-10T00:00:00.000Z",
+        walletId: 1,
       });
       expect(result.amountPayed).toBe(1400);
     });
 
     test("allows missing paymentDate", () => {
-      const result = payExpenseSchema.parse({ amountPayed: 1400 });
+      const result = payExpenseSchema.parse({
+        amountPayed: 1400,
+        walletId: 1,
+      });
       expect(result.amountPayed).toBe(1400);
       expect(result.paymentDate).toBeUndefined();
     });
@@ -407,6 +428,7 @@ describe("createNonPeriodicExpense", () => {
       description: "Ropa",
       amount: 2500,
       dueDate: "2026-06-15T00:00:00.000Z",
+      walletId: 1,
     };
     const created = {
       id: 1,
@@ -417,7 +439,11 @@ describe("createNonPeriodicExpense", () => {
       year: 2026,
       month: 6,
     };
+    const wallet = { id: 1, balance: 10000 };
     mockPrisma.expense.create.mockResolvedValueOnce(created);
+    mockWalletFindUnique.mockResolvedValueOnce(wallet);
+    mockWalletUpdate.mockResolvedValueOnce({ ...wallet, balance: 7500 });
+    mockMovementCreate.mockResolvedValueOnce({ id: 1 });
 
     const result = await createNonPeriodicExpense(input);
     expect(result.status).toBe(PaymentStatus.PAYED);
@@ -436,23 +462,48 @@ describe("createNonPeriodicExpense", () => {
 
 describe("payExpense", () => {
   test("updates status to PAYED with amountPayed and paymentDate", async () => {
+    const expense = {
+      id: 1,
+      description: "Ropa",
+      status: PaymentStatus.PENDING,
+      amount: 1400,
+      amountPayed: null,
+      paymentDate: null,
+    };
     const paidExpense = {
       id: 1,
       status: PaymentStatus.PAYED,
       amountPayed: 1400,
       paymentDate: new Date("2026-06-10T00:00:00.000Z"),
     };
+    const wallet = { id: 1, balance: 10000, currency: "ARS" };
+    mockPrisma.expense.findUniqueOrThrow.mockResolvedValueOnce(expense);
+    mockWalletFindUnique.mockResolvedValueOnce(wallet);
     mockPrisma.expense.update.mockResolvedValueOnce(paidExpense);
+    mockWalletUpdate.mockResolvedValueOnce({ ...wallet, balance: 8600 });
+    mockMovementCreate.mockResolvedValueOnce({ id: 1 });
 
     const result = await payExpense(1, {
       amountPayed: 1400,
       paymentDate: "2026-06-10T00:00:00.000Z",
+      walletId: 1,
     });
     expect(result.status).toBe(PaymentStatus.PAYED);
     expect(result.amountPayed).toBe(1400);
   });
 
   test("defaults paymentDate to now when not provided", async () => {
+    const expense = {
+      id: 1,
+      description: "Ropa",
+      status: PaymentStatus.PENDING,
+      amount: 1500,
+      amountPayed: null,
+      paymentDate: null,
+    };
+    const wallet = { id: 1, balance: 10000, currency: "ARS" };
+    mockPrisma.expense.findUniqueOrThrow.mockResolvedValueOnce(expense);
+    mockWalletFindUnique.mockResolvedValueOnce(wallet);
     mockPrisma.expense.update.mockImplementationOnce(
       async ({ where, data }) => ({
         id: where.id,
@@ -462,8 +513,10 @@ describe("payExpense", () => {
         paymentDate: data.paymentDate,
       }),
     );
+    mockWalletUpdate.mockResolvedValueOnce({ ...wallet, balance: 8500 });
+    mockMovementCreate.mockResolvedValueOnce({ id: 1 });
 
-    const result = await payExpense(1, { amountPayed: 1500 });
+    const result = await payExpense(1, { amountPayed: 1500, walletId: 1 });
     expect(result.status).toBe(PaymentStatus.PAYED);
     expect(result.paymentDate).toBeInstanceOf(Date);
   });
@@ -739,7 +792,18 @@ describe("getBeloSellPriceForDate", () => {
 
 describe("payExpense with BELO", () => {
   test("sets beloPrice and usdcEquivalent when BELO quote is available", async () => {
+    const expense = {
+      id: 1,
+      description: "Ropa",
+      status: PaymentStatus.PENDING,
+      amount: 15000,
+      amountPayed: null,
+      paymentDate: null,
+    };
     const paymentDate = new Date("2026-06-10T00:00:00.000Z");
+    const wallet = { id: 1, balance: 100000, currency: "ARS" };
+    mockPrisma.expense.findUniqueOrThrow.mockResolvedValueOnce(expense);
+    mockWalletFindUnique.mockResolvedValueOnce(wallet);
     mockPrisma.quoteHistory.findFirst
       .mockResolvedValueOnce({
         sell: "1500.00",
@@ -757,10 +821,13 @@ describe("payExpense with BELO", () => {
         usdcEquivalent: data.usdcEquivalent,
       }),
     );
+    mockWalletUpdate.mockResolvedValueOnce({ ...wallet, balance: 85000 });
+    mockMovementCreate.mockResolvedValueOnce({ id: 1 });
 
     const result = await payExpense(1, {
       amountPayed: 15000,
       paymentDate: "2026-06-10T00:00:00.000Z",
+      walletId: 1,
     });
 
     expect(result.beloPrice).toBe(1500);
@@ -768,6 +835,17 @@ describe("payExpense with BELO", () => {
   });
 
   test("does not set BELO fields when no quote is available", async () => {
+    const expense = {
+      id: 1,
+      description: "Ropa",
+      status: PaymentStatus.PENDING,
+      amount: 15000,
+      amountPayed: null,
+      paymentDate: null,
+    };
+    const wallet = { id: 1, balance: 100000, currency: "ARS" };
+    mockPrisma.expense.findUniqueOrThrow.mockResolvedValueOnce(expense);
+    mockWalletFindUnique.mockResolvedValueOnce(wallet);
     mockPrisma.quoteHistory.findFirst
       .mockResolvedValueOnce(null)
       .mockResolvedValueOnce(null);
@@ -780,10 +858,13 @@ describe("payExpense with BELO", () => {
         paymentDate: data.paymentDate,
       }),
     );
+    mockWalletUpdate.mockResolvedValueOnce({ ...wallet, balance: 85000 });
+    mockMovementCreate.mockResolvedValueOnce({ id: 1 });
 
     const result = await payExpense(1, {
       amountPayed: 15000,
       paymentDate: "2026-06-10T00:00:00.000Z",
+      walletId: 1,
     });
 
     expect(result.beloPrice).toBeUndefined();
@@ -794,6 +875,8 @@ describe("payExpense with BELO", () => {
 describe("createNonPeriodicExpense with BELO", () => {
   test("sets beloPrice and usdcEquivalent when BELO quote is available", async () => {
     const dueDate = "2026-06-15T00:00:00.000Z";
+    const wallet = { id: 1, balance: 100000, currency: "ARS" };
+    mockWalletFindUnique.mockResolvedValueOnce(wallet);
     mockPrisma.quoteHistory.findFirst
       .mockResolvedValueOnce({
         sell: "1500.00",
@@ -812,11 +895,14 @@ describe("createNonPeriodicExpense with BELO", () => {
         usdcEquivalent: data.usdcEquivalent,
       }),
     );
+    mockWalletUpdate.mockResolvedValueOnce({ ...wallet, balance: 70000 });
+    mockMovementCreate.mockResolvedValueOnce({ id: 1 });
 
     const result = await createNonPeriodicExpense({
       description: "Ropa",
       amount: 30000,
       dueDate,
+      walletId: 1,
     });
 
     expect(result.beloPrice).toBe(1500);
@@ -824,6 +910,8 @@ describe("createNonPeriodicExpense with BELO", () => {
   });
 
   test("does not set BELO fields when no quote is available", async () => {
+    const wallet = { id: 1, balance: 100000, currency: "ARS" };
+    mockWalletFindUnique.mockResolvedValueOnce(wallet);
     mockPrisma.quoteHistory.findFirst
       .mockResolvedValueOnce(null)
       .mockResolvedValueOnce(null);
@@ -837,11 +925,14 @@ describe("createNonPeriodicExpense with BELO", () => {
         status: PaymentStatus.PAYED,
       }),
     );
+    mockWalletUpdate.mockResolvedValueOnce({ ...wallet, balance: 97500 });
+    mockMovementCreate.mockResolvedValueOnce({ id: 1 });
 
     const result = await createNonPeriodicExpense({
       description: "Ropa",
       amount: 2500,
       dueDate: "2026-06-15T00:00:00.000Z",
+      walletId: 1,
     });
 
     expect(result.beloPrice).toBeUndefined();
@@ -938,3 +1029,402 @@ describe("updateExpense with BELO", () => {
     expect(mockPrisma.quoteHistory.findFirst).not.toHaveBeenCalled();
   });
 });
+
+describe("updateExpense wallet adjustments", () => {
+  test("creates WITHDRAWAL when amount increases on a PAYED expense", async () => {
+    const existing = {
+      id: 1,
+      status: PaymentStatus.PAYED,
+      amount: 25000,
+      amountPayed: 25000,
+      paymentDate: new Date("2026-06-10T00:00:00.000Z"),
+      dueDate: new Date("2026-06-15T00:00:00.000Z"),
+      year: 2026,
+      month: 6,
+      walletId: 1,
+    };
+    const wallet = { id: 1, balance: 100000, currency: "ARS" };
+    mockPrisma.expense.findUniqueOrThrow.mockResolvedValueOnce(existing);
+    mockWalletFindUnique.mockResolvedValueOnce(wallet);
+    mockPrisma.expense.update.mockImplementationOnce(
+      async ({ where, data }) => ({ id: where.id, ...existing, ...data }),
+    );
+    mockWalletUpdate.mockResolvedValueOnce({ ...wallet, balance: 90000 });
+    mockMovementCreate.mockResolvedValueOnce({ id: 1 });
+
+    const result = await updateExpense(1, {
+      amount: 35000,
+      dueDate: "2026-06-15T00:00:00.000Z",
+    });
+
+    expect(result.amount).toBe(35000);
+    expect(mockWalletUpdate).toHaveBeenCalledWith({
+      where: { id: 1 },
+      data: { balance: { increment: -10000 } },
+    });
+    expect(mockMovementCreate).toHaveBeenCalledWith({
+      data: {
+        walletId: 1,
+        type: "WITHDRAWAL",
+        amount: -10000,
+        description: "Ajuste por edición de gasto",
+      },
+    });
+  });
+
+  test("creates DEPOSIT when amount decreases on a PAYED expense", async () => {
+    const existing = {
+      id: 1,
+      status: PaymentStatus.PAYED,
+      amount: 35000,
+      amountPayed: 35000,
+      paymentDate: new Date("2026-06-10T00:00:00.000Z"),
+      dueDate: new Date("2026-06-15T00:00:00.000Z"),
+      year: 2026,
+      month: 6,
+      walletId: 1,
+    };
+    const wallet = { id: 1, balance: 75000, currency: "ARS" };
+    mockPrisma.expense.findUniqueOrThrow.mockResolvedValueOnce(existing);
+    mockWalletFindUnique.mockResolvedValueOnce(wallet);
+    mockPrisma.expense.update.mockImplementationOnce(
+      async ({ where, data }) => ({ id: where.id, ...existing, ...data }),
+    );
+    mockWalletUpdate.mockResolvedValueOnce({ ...wallet, balance: 85000 });
+    mockMovementCreate.mockResolvedValueOnce({ id: 1 });
+
+    const result = await updateExpense(1, {
+      amount: 25000,
+      dueDate: "2026-06-15T00:00:00.000Z",
+    });
+
+    expect(result.amount).toBe(25000);
+    expect(mockWalletUpdate).toHaveBeenCalledWith({
+      where: { id: 1 },
+      data: { balance: { increment: 10000 } },
+    });
+    expect(mockMovementCreate).toHaveBeenCalledWith({
+      data: {
+        walletId: 1,
+        type: "DEPOSIT",
+        amount: 10000,
+        description: "Ajuste por edición de gasto",
+      },
+    });
+  });
+
+  test("does not create wallet adjustment when amount is unchanged", async () => {
+    const existing = {
+      id: 1,
+      status: PaymentStatus.PAYED,
+      amount: 25000,
+      amountPayed: 25000,
+      paymentDate: new Date("2026-06-10T00:00:00.000Z"),
+      dueDate: new Date("2026-06-15T00:00:00.000Z"),
+      year: 2026,
+      month: 6,
+      walletId: 1,
+    };
+    mockPrisma.expense.findUniqueOrThrow.mockResolvedValueOnce(existing);
+    mockPrisma.expense.update.mockImplementationOnce(
+      async ({ where, data }) => ({ id: where.id, ...existing, ...data }),
+    );
+
+    const result = await updateExpense(1, {
+      amount: 25000,
+      dueDate: "2026-06-15T00:00:00.000Z",
+    });
+
+    expect(result.amount).toBe(25000);
+    expect(mockWalletUpdate).not.toHaveBeenCalled();
+    expect(mockMovementCreate).not.toHaveBeenCalled();
+  });
+
+  test("does not create wallet adjustment when existing expense has no walletId", async () => {
+    const existing = {
+      id: 1,
+      status: PaymentStatus.PAYED,
+      amount: 25000,
+      amountPayed: 25000,
+      paymentDate: new Date("2026-06-10T00:00:00.000Z"),
+      dueDate: new Date("2026-06-15T00:00:00.000Z"),
+      year: 2026,
+      month: 6,
+    };
+    mockPrisma.expense.findUniqueOrThrow.mockResolvedValueOnce(existing);
+    mockPrisma.expense.update.mockImplementationOnce(
+      async ({ where, data }) => ({ id: where.id, ...existing, ...data }),
+    );
+
+    const result = await updateExpense(1, {
+      amount: 35000,
+      dueDate: "2026-06-15T00:00:00.000Z",
+    });
+
+    expect(result.amount).toBe(35000);
+    expect(mockWalletUpdate).not.toHaveBeenCalled();
+    expect(mockMovementCreate).not.toHaveBeenCalled();
+  });
+
+  test("creates DEPOSIT refund when reverting PAYED expense to PENDING with walletId", async () => {
+    const existing = {
+      id: 1,
+      status: PaymentStatus.PAYED,
+      amount: 25000,
+      amountPayed: 25000,
+      paymentDate: new Date("2026-06-10T00:00:00.000Z"),
+      dueDate: new Date("2026-06-15T00:00:00.000Z"),
+      year: 2026,
+      month: 6,
+      walletId: 1,
+    };
+    const wallet = { id: 1, balance: 75000, currency: "ARS" };
+    mockPrisma.expense.findUniqueOrThrow.mockResolvedValueOnce(existing);
+    mockWalletFindUnique.mockResolvedValueOnce(wallet);
+    mockPrisma.expense.update.mockImplementationOnce(
+      async ({ where, data }) => ({ id: where.id, ...existing, ...data }),
+    );
+    mockWalletUpdate.mockResolvedValueOnce({ ...wallet, balance: 100000 });
+    mockMovementCreate.mockResolvedValueOnce({ id: 1 });
+
+    const result = await updateExpense(1, {
+      amount: 25000,
+      dueDate: "2026-06-15T00:00:00.000Z",
+      status: "PENDING",
+    });
+
+    expect(result.status).toBe(PaymentStatus.PENDING);
+    expect(result.amountPayed).toBeNull();
+    expect(mockWalletUpdate).toHaveBeenCalledWith({
+      where: { id: 1 },
+      data: { balance: { increment: 25000 } },
+    });
+    expect(mockMovementCreate).toHaveBeenCalledWith({
+      data: {
+        walletId: 1,
+        type: "DEPOSIT",
+        amount: 25000,
+        description: "Anulación de gasto",
+      },
+    });
+  });
+
+  test("does not create refund when existing expense has no walletId for PENDING revert", async () => {
+    const existing = {
+      id: 1,
+      status: PaymentStatus.PAYED,
+      amount: 25000,
+      amountPayed: 25000,
+      paymentDate: new Date("2026-06-10T00:00:00.000Z"),
+      dueDate: new Date("2026-06-15T00:00:00.000Z"),
+      year: 2026,
+      month: 6,
+    };
+    mockPrisma.expense.findUniqueOrThrow.mockResolvedValueOnce(existing);
+    mockPrisma.expense.update.mockImplementationOnce(
+      async ({ where, data }) => ({ id: where.id, ...existing, ...data }),
+    );
+
+    const result = await updateExpense(1, {
+      amount: 25000,
+      dueDate: "2026-06-15T00:00:00.000Z",
+      status: "PENDING",
+    });
+
+    expect(result.status).toBe(PaymentStatus.PENDING);
+    expect(mockWalletUpdate).not.toHaveBeenCalled();
+    expect(mockMovementCreate).not.toHaveBeenCalled();
+  });
+
+  test("throws when wallet is not found during adjustment", async () => {
+    const existing = {
+      id: 1,
+      status: PaymentStatus.PAYED,
+      amount: 25000,
+      amountPayed: 25000,
+      paymentDate: new Date("2026-06-10T00:00:00.000Z"),
+      dueDate: new Date("2026-06-15T00:00:00.000Z"),
+      year: 2026,
+      month: 6,
+      walletId: 1,
+    };
+    mockPrisma.expense.findUniqueOrThrow.mockResolvedValueOnce(existing);
+    mockWalletFindUnique.mockResolvedValueOnce(null);
+
+    expect(
+      updateExpense(1, {
+        amount: 35000,
+        dueDate: "2026-06-15T00:00:00.000Z",
+      }),
+    ).rejects.toThrow("Billetera no encontrada");
+  });
+
+  test("only creates refund (not amount adjustment) when both amount and status change", async () => {
+    const existing = {
+      id: 1,
+      status: PaymentStatus.PAYED,
+      amount: 25000,
+      amountPayed: 25000,
+      paymentDate: new Date("2026-06-10T00:00:00.000Z"),
+      dueDate: new Date("2026-06-15T00:00:00.000Z"),
+      year: 2026,
+      month: 6,
+      walletId: 1,
+    };
+    const wallet = { id: 1, balance: 75000, currency: "ARS" };
+    mockPrisma.expense.findUniqueOrThrow.mockResolvedValueOnce(existing);
+    mockWalletFindUnique.mockResolvedValueOnce(wallet);
+    mockPrisma.expense.update.mockImplementationOnce(
+      async ({ where, data }) => ({ id: where.id, ...existing, ...data }),
+    );
+    mockWalletUpdate.mockResolvedValueOnce({ ...wallet, balance: 100000 });
+    mockMovementCreate.mockResolvedValueOnce({ id: 1 });
+
+    const result = await updateExpense(1, {
+      amount: 35000,
+      dueDate: "2026-06-15T00:00:00.000Z",
+      status: "PENDING",
+    });
+
+    expect(result.status).toBe(PaymentStatus.PENDING);
+    expect(mockWalletUpdate).toHaveBeenCalledTimes(1);
+    expect(mockWalletUpdate).toHaveBeenCalledWith({
+      where: { id: 1 },
+      data: { balance: { increment: 25000 } },
+    });
+    expect(mockMovementCreate).toHaveBeenCalledWith({
+      data: {
+        walletId: 1,
+        type: "DEPOSIT",
+        amount: 25000,
+        description: "Anulación de gasto",
+      },
+    });
+  });
+
+  test("uses amountPayed for refund when expense has different amountPayed and amount", async () => {
+    const existing = {
+      id: 1,
+      status: PaymentStatus.PAYED,
+      amount: 30000,
+      amountPayed: 28000,
+      paymentDate: new Date("2026-06-10T00:00:00.000Z"),
+      dueDate: new Date("2026-06-15T00:00:00.000Z"),
+      year: 2026,
+      month: 6,
+      walletId: 1,
+    };
+    const wallet = { id: 1, balance: 75000, currency: "ARS" };
+    mockPrisma.expense.findUniqueOrThrow.mockResolvedValueOnce(existing);
+    mockWalletFindUnique.mockResolvedValueOnce(wallet);
+    mockPrisma.expense.update.mockImplementationOnce(
+      async ({ where, data }) => ({ id: where.id, ...existing, ...data }),
+    );
+    mockWalletUpdate.mockResolvedValueOnce({ ...wallet, balance: 103000 });
+    mockMovementCreate.mockResolvedValueOnce({ id: 1 });
+
+    const result = await updateExpense(1, {
+      amount: 30000,
+      dueDate: "2026-06-15T00:00:00.000Z",
+      status: "PENDING",
+    });
+
+    expect(result.status).toBe(PaymentStatus.PENDING);
+    expect(mockWalletUpdate).toHaveBeenCalledWith({
+      where: { id: 1 },
+      data: { balance: { increment: 28000 } },
+    });
+    expect(mockMovementCreate).toHaveBeenCalledWith({
+      data: {
+        walletId: 1,
+        type: "DEPOSIT",
+        amount: 28000,
+        description: "Anulación de gasto",
+      },
+    });
+  });
+
+  test("creates WITHDRAWAL when amountPayed increases while amount stays the same", async () => {
+    const existing = {
+      id: 1,
+      status: PaymentStatus.PAYED,
+      amount: 25000,
+      amountPayed: 25000,
+      paymentDate: new Date("2026-06-10T00:00:00.000Z"),
+      dueDate: new Date("2026-06-15T00:00:00.000Z"),
+      year: 2026,
+      month: 6,
+      walletId: 1,
+    };
+    const wallet = { id: 1, balance: 75000, currency: "ARS" };
+    mockPrisma.expense.findUniqueOrThrow.mockResolvedValueOnce(existing);
+    mockWalletFindUnique.mockResolvedValueOnce(wallet);
+    mockPrisma.expense.update.mockImplementationOnce(
+      async ({ where, data }) => ({ id: where.id, ...existing, ...data }),
+    );
+    mockWalletUpdate.mockResolvedValueOnce({ ...wallet, balance: 65000 });
+    mockMovementCreate.mockResolvedValueOnce({ id: 1 });
+
+    const result = await updateExpense(1, {
+      amount: 25000,
+      dueDate: "2026-06-15T00:00:00.000Z",
+      amountPayed: 35000,
+    });
+
+    expect(result.amount).toBe(25000);
+    expect(mockWalletUpdate).toHaveBeenCalledWith({
+      where: { id: 1 },
+      data: { balance: { increment: -10000 } },
+    });
+    expect(mockMovementCreate).toHaveBeenCalledWith({
+      data: {
+        walletId: 1,
+        type: "WITHDRAWAL",
+        amount: -10000,
+        description: "Ajuste por edición de gasto",
+      },
+    });
+  });
+
+  test("creates adjustment based on amountPayed when both amount and amountPayed change", async () => {
+    const existing = {
+      id: 1,
+      status: PaymentStatus.PAYED,
+      amount: 25000,
+      amountPayed: 25000,
+      paymentDate: new Date("2026-06-10T00:00:00.000Z"),
+      dueDate: new Date("2026-06-15T00:00:00.000Z"),
+      year: 2026,
+      month: 6,
+      walletId: 1,
+    };
+    const wallet = { id: 1, balance: 75000, currency: "ARS" };
+    mockPrisma.expense.findUniqueOrThrow.mockResolvedValueOnce(existing);
+    mockWalletFindUnique.mockResolvedValueOnce(wallet);
+    mockPrisma.expense.update.mockImplementationOnce(
+      async ({ where, data }) => ({ id: where.id, ...existing, ...data }),
+    );
+    mockWalletUpdate.mockResolvedValueOnce({ ...wallet, balance: 72000 });
+    mockMovementCreate.mockResolvedValueOnce({ id: 1 });
+
+    const result = await updateExpense(1, {
+      amount: 30000,
+      dueDate: "2026-06-15T00:00:00.000Z",
+      amountPayed: 28000,
+    });
+
+    expect(result.amount).toBe(30000);
+    expect(mockWalletUpdate).toHaveBeenCalledWith({
+      where: { id: 1 },
+      data: { balance: { increment: -3000 } },
+    });
+    expect(mockMovementCreate).toHaveBeenCalledWith({
+      data: {
+        walletId: 1,
+        type: "WITHDRAWAL",
+        amount: -3000,
+        description: "Ajuste por edición de gasto",
+      },
+    });
+  });
+});

apps/frontend/src/components/layout/Sidebar.tsx

@@ -1,6 +1,7 @@
 import { Link } from "@tanstack/react-router";
 import {
   FileText,
+  Landmark,
   LayoutDashboard,
   Settings,
   TrendingUp,
@@ -11,6 +12,7 @@ import { cn } from "@/lib/utils";
 const navItems = [
   { to: "/", label: "Panel", icon: LayoutDashboard },
   { to: "/expenses", label: "Gastos", icon: Wallet },
+  { to: "/wallets", label: "Billeteras", icon: Landmark },
   { to: "/quotes", label: "Cotizaciones", icon: FileText },
   { to: "/quotes/belo", label: "BELO", icon: TrendingUp },
 ];

apps/frontend/src/features/dashboard/DashboardPage.tsx

@@ -9,9 +9,10 @@ import {
 import type { Quote } from "@/lib/api";
 import {
   useFetchQuotes,
-  useMonthlyPayedTotal,
   useMonthlyTotals,
   useQuotes,
+  useSettings,
+  useWallets,
 } from "@/lib/queries";
 import { RelativeTime } from "@/lib/time";
 import { DashboardExpensesTable } from "./components/DashboardExpensesTable";
@@ -130,17 +131,24 @@ export function DashboardPage() {
   const bna = quotes?.find((q) => q.type === "BNA");
 
   const now = new Date();
-  const { data: monthlyExpenses } = useMonthlyPayedTotal(
-    now.getFullYear(),
-    now.getMonth() + 1,
-  );
   const { data: monthlyTotals } = useMonthlyTotals(
     now.getFullYear(),
     now.getMonth() + 1,
   );
 
+  const { data: settings } = useSettings();
+  const salaryMultiplier =
+    settings?.find((s) => s.key === "salary_multiplier")?.value ?? "4500";
+
   const isFetching = isLoading || isPending;
 
+  const { data: wallets } = useWallets();
+
+  const walletBalanceFormatter = new Intl.NumberFormat("es-AR", {
+    minimumFractionDigits: 2,
+    maximumFractionDigits: 4,
+  });
+
   return (
     <div className="space-y-4">
       <div className="flex items-center justify-between">
@@ -165,9 +173,12 @@ export function DashboardPage() {
           </p>
         </div>
         <div className="rounded-lg border p-4">
-          <p className="text-sm text-muted-foreground">Gastos del mes</p>
+          <p className="text-sm text-muted-foreground">Sueldo</p>
           <p className="text-2xl font-bold">
-            ${priceFormatter.format(monthlyExpenses?.total ?? 0)}
+            $
+            {priceFormatter.format(
+              (belo ? Number(belo.buy) : 0) * Number(salaryMultiplier),
+            )}
           </p>
         </div>
         <QuoteCard
@@ -189,6 +200,24 @@ export function DashboardPage() {
           variant="minimal"
         />
       </div>
+      {wallets && wallets.length > 0 && (
+        <div className="space-y-2">
+          <h2 className="text-lg font-semibold">Billeteras</h2>
+          <div className="grid gap-4 sm:grid-cols-2 lg:grid-cols-4">
+            {wallets.map((w) => (
+              <div key={w.id} className="rounded-lg border p-4">
+                <p className="text-sm text-muted-foreground">{w.name}</p>
+                <p className="text-sm text-muted-foreground/60 text-xs">
+                  {w.currency}
+                </p>
+                <p className="text-2xl font-bold tabular-nums mt-1">
+                  {walletBalanceFormatter.format(w.balance)}
+                </p>
+              </div>
+            ))}
+          </div>
+        </div>
+      )}
       <DashboardExpensesTable />
     </div>
   );

apps/frontend/src/features/expenses/components/NewExpenseDialog.tsx

@@ -1,5 +1,6 @@
 import { zodResolver } from "@hookform/resolvers/zod";
-import { Controller, useForm } from "react-hook-form";
+import { useEffect, useMemo, useRef } from "react";
+import { Controller, useForm, useWatch } from "react-hook-form";
 import { z } from "zod";
 import { Button } from "@/components/ui/button";
 import { DatePicker } from "@/components/ui/date-picker";
@@ -10,7 +11,15 @@ import {
   ResponsiveDialogHeader,
   ResponsiveDialogTitle,
 } from "@/components/ui/responsive-dialog";
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@/components/ui/select";
 import { useExpensesContext } from "../ExpensesProvider";
+import { useQuotes, useWallets } from "@/lib/queries";
 
 const newExpenseSchema = z.object({
   description: z
@@ -19,6 +28,11 @@ const newExpenseSchema = z.object({
     .max(50, "Máximo 50 caracteres"),
   amount: z.number().positive("El monto debe ser mayor a 0"),
   dueDate: z.date({ message: "La fecha es obligatoria" }),
+  walletId: z.number().positive("Seleccioná una billetera"),
+  usdcConversionRate: z
+    .number()
+    .positive("La cotización debe ser mayor a 0")
+    .optional(),
 });
 
 type NewExpenseFormValues = z.infer<typeof newExpenseSchema>;
@@ -33,6 +47,19 @@ export function NewExpenseDialog({
   onOpenChange,
 }: NewExpenseDialogProps) {
   const { createNonPeriodicExpense } = useExpensesContext();
+  const prevWalletRef = useRef(0);
+  const { data: wallets } = useWallets();
+  const { data: quotes } = useQuotes();
+  const defaultWallet = useMemo(
+    () => wallets?.find((w) => w.isDefault),
+    [wallets],
+  );
+
+  const beloSell = useMemo(() => {
+    if (!quotes) return null;
+    const belo = quotes.find((q) => q.type === "BELO");
+    return belo ? Number(belo.sell) : null;
+  }, [quotes]);
 
   const {
     register,
@@ -40,15 +67,48 @@ export function NewExpenseDialog({
     control,
     formState: { errors, isSubmitting },
     reset,
+    setValue,
+    trigger,
   } = useForm<NewExpenseFormValues>({
     resolver: zodResolver(newExpenseSchema),
     defaultValues: {
       description: "",
       amount: 0,
       dueDate: new Date(),
+      walletId: defaultWallet?.id ?? 0,
+      usdcConversionRate: undefined,
     },
   });
 
+  useEffect(() => {
+    if (defaultWallet && !open) return;
+    if (defaultWallet) {
+      setValue("walletId", defaultWallet.id);
+      prevWalletRef.current = defaultWallet.id;
+    }
+  }, [defaultWallet, setValue, open]);
+
+  const usdcConversionRateField = register("usdcConversionRate", {
+    setValueAs: (value) => (value === "" ? undefined : Number(value)),
+  });
+
+  const selectedWalletId = useWatch({ control, name: "walletId" });
+  const selectedWallet = wallets?.find((w) => w.id === selectedWalletId);
+  const isUSDC = selectedWallet?.currency === "USDC";
+
+  useEffect(() => {
+    if (
+      isUSDC &&
+      beloSell &&
+      selectedWalletId &&
+      selectedWalletId !== prevWalletRef.current
+    ) {
+      setValue("usdcConversionRate", beloSell);
+      trigger("usdcConversionRate");
+      prevWalletRef.current = selectedWalletId;
+    }
+  }, [isUSDC, beloSell, selectedWalletId, setValue, trigger]);
+
   function handleClose(open: boolean) {
     onOpenChange(open);
     if (!open) reset();
@@ -59,6 +119,8 @@ export function NewExpenseDialog({
       description: data.description,
       amount: data.amount,
       dueDate: data.dueDate.toISOString(),
+      walletId: data.walletId,
+      usdcConversionRate: isUSDC ? data.usdcConversionRate : undefined,
     });
     handleClose(false);
   }
@@ -112,6 +174,62 @@ export function NewExpenseDialog({
             )}
           </div>
 
+          <div className="flex flex-col gap-1.5">
+            <label className="text-sm font-medium">Billetera</label>
+            <Controller
+              control={control}
+              name="walletId"
+              render={({ field }) => (
+                <Select
+                  value={field.value ? String(field.value) : ""}
+                  onValueChange={(v) => field.onChange(Number(v))}
+                >
+                  <SelectTrigger className="h-8 w-full">
+                    <SelectValue placeholder="Seleccionar billetera" />
+                  </SelectTrigger>
+                  <SelectContent>
+                    {wallets?.map((w) => (
+                      <SelectItem key={w.id} value={String(w.id)}>
+                        {w.name} ({w.currency})
+                      </SelectItem>
+                    ))}
+                  </SelectContent>
+                </Select>
+              )}
+            />
+            {errors.walletId && (
+              <span className="text-xs text-destructive">
+                {errors.walletId.message}
+              </span>
+            )}
+          </div>
+
+          {isUSDC && (
+            <div className="flex flex-col gap-1.5">
+              <label
+                htmlFor="usdcConversionRate"
+                className="text-sm font-medium"
+              >
+                Cotización USDC (ARS por USDC)
+              </label>
+              <input
+                id="usdcConversionRate"
+                type="text"
+                inputMode="decimal"
+                {...usdcConversionRateField}
+                className="h-8 rounded-lg border border-input bg-background px-2.5 text-sm outline-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50"
+              />
+              {errors.usdcConversionRate && (
+                <span className="text-xs text-destructive">
+                  {errors.usdcConversionRate.message}
+                </span>
+              )}
+              <span className="text-xs text-muted-foreground">
+                Pre-sugerido: {beloSell ?? "—"} ARS/USDC (BELO)
+              </span>
+            </div>
+          )}
+
           <div className="flex flex-col gap-1.5">
             <span className="text-sm font-medium">Fecha del gasto</span>
             <Controller

apps/frontend/src/features/expenses/components/PayExpenseDialog.tsx

@@ -1,6 +1,6 @@
 import { zodResolver } from "@hookform/resolvers/zod";
-import { useEffect, useRef } from "react";
-import { Controller, useForm } from "react-hook-form";
+import { useEffect, useMemo, useRef } from "react";
+import { Controller, useForm, useWatch } from "react-hook-form";
 import { z } from "zod";
 import { Button } from "@/components/ui/button";
 import { DatePicker } from "@/components/ui/date-picker";
@@ -11,12 +11,28 @@ import {
   ResponsiveDialogHeader,
   ResponsiveDialogTitle,
 } from "@/components/ui/responsive-dialog";
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@/components/ui/select";
 import type { Expense } from "@/lib/api";
 import { useExpensesContext } from "../ExpensesProvider";
+import { useQuotes, useWallets } from "@/lib/queries";
 
 const paySchema = z.object({
   amountPayed: z.number().positive("El monto debe ser mayor a 0"),
   paymentDate: z.date({ message: "La fecha es obligatoria" }),
+  walletId: z
+    .number()
+    .positive("Seleccioná una billetera")
+    .refine((v) => v > 0, "Seleccioná una billetera"),
+  usdcConversionRate: z
+    .number()
+    .positive("La cotización debe ser mayor a 0")
+    .optional(),
 });
 
 type PayFormValues = z.infer<typeof paySchema>;
@@ -34,6 +50,19 @@ export function PayExpenseDialog({
 }: PayExpenseDialogProps) {
   const { payExpense } = useExpensesContext();
   const amountInputRef = useRef<HTMLInputElement | null>(null);
+  const prevWalletRef = useRef(0);
+  const { data: wallets } = useWallets();
+  const { data: quotes } = useQuotes();
+  const defaultWallet = useMemo(
+    () => wallets?.find((w) => w.isDefault),
+    [wallets],
+  );
+
+  const beloSell = useMemo(() => {
+    if (!quotes) return null;
+    const belo = quotes.find((q) => q.type === "BELO");
+    return belo ? Number(belo.sell) : null;
+  }, [quotes]);
 
   const {
     register,
@@ -41,25 +70,54 @@ export function PayExpenseDialog({
     control,
     formState: { errors, isSubmitting },
     reset,
+    setValue,
+    trigger,
   } = useForm<PayFormValues>({
     resolver: zodResolver(paySchema),
     defaultValues: {
       amountPayed: 0,
       paymentDate: undefined,
+      walletId: 0,
+      usdcConversionRate: undefined,
     },
   });
   const { ref: amountPayedRef, ...amountPayedField } = register("amountPayed", {
     setValueAs: (value) => Number(value),
   });
 
+  const usdcConversionRateField = register("usdcConversionRate", {
+    setValueAs: (value) => (value === "" ? undefined : Number(value)),
+  });
+
+  const selectedWalletId = useWatch({ control, name: "walletId" });
+  const selectedWallet = wallets?.find((w) => w.id === selectedWalletId);
+  const isUSDC = selectedWallet?.currency === "USDC";
+
   useEffect(() => {
     if (expense) {
+      const defaultId = defaultWallet?.id ?? 0;
       reset({
         amountPayed: Number(expense.amount),
         paymentDate: new Date(),
+        walletId: defaultId,
+        usdcConversionRate: undefined,
       });
+      prevWalletRef.current = defaultId;
     }
-  }, [expense, reset]);
+  }, [expense, defaultWallet, reset]);
+
+  useEffect(() => {
+    if (
+      isUSDC &&
+      beloSell &&
+      selectedWalletId &&
+      selectedWalletId !== prevWalletRef.current
+    ) {
+      setValue("usdcConversionRate", beloSell);
+      trigger("usdcConversionRate");
+      prevWalletRef.current = selectedWalletId;
+    }
+  }, [isUSDC, beloSell, selectedWalletId, setValue, trigger]);
 
   useEffect(() => {
     if (!open || !expense) return;
@@ -82,6 +140,8 @@ export function PayExpenseDialog({
     await payExpense(expense.id, {
       amountPayed: data.amountPayed,
       paymentDate: data.paymentDate.toISOString(),
+      walletId: data.walletId,
+      usdcConversionRate: isUSDC ? data.usdcConversionRate : undefined,
     });
     handleClose(false);
   }
@@ -133,6 +193,62 @@ export function PayExpenseDialog({
             )}
           </div>
 
+          <div className="flex flex-col gap-1.5">
+            <label className="text-sm font-medium">Billetera</label>
+            <Controller
+              control={control}
+              name="walletId"
+              render={({ field }) => (
+                <Select
+                  value={field.value ? String(field.value) : ""}
+                  onValueChange={(v) => field.onChange(Number(v))}
+                >
+                  <SelectTrigger className="h-8 w-full">
+                    <SelectValue placeholder="Seleccionar billetera" />
+                  </SelectTrigger>
+                  <SelectContent>
+                    {wallets?.map((w) => (
+                      <SelectItem key={w.id} value={String(w.id)}>
+                        {w.name} ({w.currency})
+                      </SelectItem>
+                    ))}
+                  </SelectContent>
+                </Select>
+              )}
+            />
+            {errors.walletId && (
+              <span className="text-xs text-destructive">
+                {errors.walletId.message}
+              </span>
+            )}
+          </div>
+
+          {isUSDC && (
+            <div className="flex flex-col gap-1.5">
+              <label
+                htmlFor="usdcConversionRate"
+                className="text-sm font-medium"
+              >
+                Cotización USDC (ARS por USDC)
+              </label>
+              <input
+                id="usdcConversionRate"
+                type="text"
+                inputMode="decimal"
+                {...usdcConversionRateField}
+                className="h-8 rounded-lg border border-input bg-background px-2.5 text-sm outline-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50"
+              />
+              {errors.usdcConversionRate && (
+                <span className="text-xs text-destructive">
+                  {errors.usdcConversionRate.message}
+                </span>
+              )}
+              <span className="text-xs text-muted-foreground">
+                Pre-sugerido: {beloSell ?? "—"} ARS/USDC (BELO)
+              </span>
+            </div>
+          )}
+
           <div className="flex flex-col gap-1.5">
             <span className="text-sm font-medium">Fecha de pago</span>
             <Controller

apps/frontend/src/features/wallets/WalletMovementsPage.tsx

@@ -0,0 +1,516 @@
+"use client";
+
+import {
+  type ColumnDef,
+  flexRender,
+  getCoreRowModel,
+  useReactTable,
+} from "@tanstack/react-table";
+import { subMonths, startOfMonth } from "date-fns";
+import {
+  ChevronsLeftIcon,
+  ChevronsRightIcon,
+  SkipBackIcon,
+  SkipForwardIcon,
+} from "lucide-react";
+import { useMemo, useState } from "react";
+import { useSearch } from "@tanstack/react-router";
+import { Button } from "@/components/ui/button";
+import { DatePicker } from "@/components/ui/date-picker";
+import {
+  Pagination,
+  PaginationContent,
+  PaginationItem,
+  PaginationLink,
+  PaginationNext,
+  PaginationPrevious,
+} from "@/components/ui/pagination";
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@/components/ui/select";
+import type { Wallet, WalletMovement, WalletMovementsFilter } from "@/lib/api";
+import { useWalletMovementsFiltered, useWallets } from "@/lib/queries";
+
+const amountFormatter = new Intl.NumberFormat("es-AR", {
+  minimumFractionDigits: 2,
+  maximumFractionDigits: 4,
+});
+
+const dateFormatter = new Intl.DateTimeFormat("es-AR", {
+  day: "2-digit",
+  month: "2-digit",
+  year: "numeric",
+  hour: "2-digit",
+  minute: "2-digit",
+});
+
+const typeLabels: Record<string, string> = {
+  DEPOSIT: "Depósito",
+  WITHDRAWAL: "Extracción",
+  TRANSFER_IN: "Transferencia recibida",
+  TRANSFER_OUT: "Transferencia enviada",
+  ADJUSTMENT: "Ajuste",
+};
+
+function TypeBadge({ type }: { type: string }) {
+  const styles: Record<string, string> = {
+    DEPOSIT:
+      "bg-emerald-100 text-emerald-700 dark:bg-emerald-900/30 dark:text-emerald-400",
+    WITHDRAWAL:
+      "bg-red-100 text-red-700 dark:bg-red-900/30 dark:text-red-400",
+    TRANSFER_IN:
+      "bg-blue-100 text-blue-700 dark:bg-blue-900/30 dark:text-blue-400",
+    TRANSFER_OUT:
+      "bg-orange-100 text-orange-700 dark:bg-orange-900/30 dark:text-orange-400",
+    ADJUSTMENT:
+      "bg-purple-100 text-purple-700 dark:bg-purple-900/30 dark:text-purple-400",
+  };
+
+  return (
+    <span
+      className={
+        `inline-flex h-5 shrink-0 items-center rounded-md px-1.5 text-xs font-medium ` +
+        (styles[type] ?? "")
+      }
+    >
+      {typeLabels[type] ?? type}
+    </span>
+  );
+}
+
+export function WalletMovementsPage() {
+  const { walletId: initialWalletId } = useSearch({
+    from: "/_authenticated/wallets/movements",
+  });
+  const { data: wallets } = useWallets();
+
+  const [walletId, setWalletId] = useState<number | undefined>(initialWalletId);
+
+  const today = new Date();
+  const [startDate, setStartDate] = useState<Date | undefined>(
+    startOfMonth(subMonths(today, 1)),
+  );
+  const [endDate, setEndDate] = useState<Date | undefined>(today);
+
+  const [page, setPage] = useState(1);
+  const pageSize = 20;
+
+  const filter: WalletMovementsFilter = useMemo(
+    () => ({
+      walletId,
+      startDate: startDate?.toISOString(),
+      endDate: endDate?.toISOString(),
+      page,
+      pageSize,
+    }),
+    [walletId, startDate, endDate, page, pageSize],
+  );
+
+  const { data: result, isLoading } = useWalletMovementsFiltered(filter);
+
+  const movements = result?.data ?? [];
+  const total = result?.total ?? 0;
+
+  const columns = useMemo<ColumnDef<WalletMovement>[]>(
+    () => [
+      {
+        header: "Tipo",
+        accessorKey: "type",
+        cell: ({ row }) => <TypeBadge type={row.getValue("type") as string} />,
+      },
+      {
+        header: "Descripción",
+        accessorKey: "description",
+        cell: ({ row }) => {
+          const desc = row.getValue("description") as string | null;
+          return (
+            <span className="text-muted-foreground">
+              {desc ?? (
+                <span className="italic text-muted-foreground/50">
+                  Sin descripción
+                </span>
+              )}
+            </span>
+          );
+        },
+      },
+      {
+        header: "Billetera",
+        id: "walletName",
+        cell: ({ row }) => {
+          const w = wallets?.find(
+            (w) => w.id === row.original.walletId,
+          );
+          return w ? (
+            <span className="text-xs text-muted-foreground">{w.name}</span>
+          ) : null;
+        },
+      },
+      {
+        header: "Monto",
+        accessorKey: "amount",
+        cell: ({ row }) => {
+          const amount = row.getValue("amount") as number;
+          return (
+            <span
+              className={`tabular-nums font-medium ${
+                amount >= 0
+                  ? "text-emerald-600 dark:text-emerald-400"
+                  : "text-red-600 dark:text-red-400"
+              }`}
+            >
+              {amount >= 0 ? "+" : ""}
+              {amountFormatter.format(amount)}
+            </span>
+          );
+        },
+      },
+      {
+        header: "Fecha",
+        accessorKey: "createdAt",
+        cell: ({ row }) => {
+          return (
+            <span className="text-xs text-muted-foreground tabular-nums">
+              {dateFormatter.format(
+                new Date(row.getValue("createdAt") as string),
+              )}
+            </span>
+          );
+        },
+      },
+    ],
+    [wallets],
+  );
+
+  const table = useReactTable({
+    data: movements,
+    columns,
+    getCoreRowModel: getCoreRowModel(),
+  });
+
+  const totalPages = Math.max(1, Math.ceil(total / pageSize));
+  const GROUP_SIZE = 3;
+  const currentGroup = Math.floor((page - 1) / GROUP_SIZE);
+  const startPage = currentGroup * GROUP_SIZE + 1;
+  const endPage = Math.min(startPage + GROUP_SIZE - 1, totalPages);
+  const firstItem = total === 0 ? 0 : (page - 1) * pageSize + 1;
+  const lastItem = Math.min(page * pageSize, total);
+
+  const mobilePagination =
+    total > 0 ? (
+      <div className="rounded-lg border bg-card p-2 sm:hidden">
+        <div className="mb-2 text-center text-xs text-muted-foreground tabular-nums">
+          {firstItem}-{lastItem} de {total} · Página {page} de {totalPages}
+        </div>
+        <div className="grid grid-cols-2 gap-2">
+          <Button
+            variant="outline"
+            size="sm"
+            disabled={page <= 1}
+            onClick={() => setPage(page - 1)}
+          >
+            Anterior
+          </Button>
+          <Button
+            variant="outline"
+            size="sm"
+            disabled={page >= totalPages}
+            onClick={() => setPage(page + 1)}
+          >
+            Siguiente
+          </Button>
+        </div>
+      </div>
+    ) : null;
+
+  return (
+    <div className="space-y-4">
+      <h1 className="text-2xl font-semibold">Movimientos</h1>
+
+      <div className="flex flex-wrap items-end gap-3">
+        <div className="flex flex-col gap-1.5">
+          <label className="text-xs font-medium text-muted-foreground">
+            Billetera
+          </label>
+          <Select
+            value={walletId !== undefined ? String(walletId) : "all"}
+            onValueChange={(v) => {
+              setWalletId(v === "all" ? undefined : Number(v));
+              setPage(1);
+            }}
+          >
+            <SelectTrigger className="h-8 w-44">
+              <SelectValue placeholder="Todas las billeteras" />
+            </SelectTrigger>
+            <SelectContent>
+              <SelectItem value="all">
+                Todas las billeteras
+              </SelectItem>
+              {wallets?.map((w: Wallet) => (
+                <SelectItem key={w.id} value={String(w.id)}>
+                  {w.name} ({w.currency})
+                </SelectItem>
+              ))}
+            </SelectContent>
+          </Select>
+        </div>
+
+        <div className="flex flex-col gap-1.5">
+          <label className="text-xs font-medium text-muted-foreground">
+            Desde
+          </label>
+          <DatePicker
+            value={startDate}
+            onChange={(d) => {
+              setStartDate(d);
+              setPage(1);
+            }}
+            placeholder="Fecha inicial"
+          />
+        </div>
+
+        <div className="flex flex-col gap-1.5">
+          <label className="text-xs font-medium text-muted-foreground">
+            Hasta
+          </label>
+          <DatePicker
+            value={endDate}
+            onChange={(d) => {
+              setEndDate(d);
+              setPage(1);
+            }}
+            placeholder="Fecha final"
+          />
+        </div>
+
+        {(walletId || startDate || endDate) && (
+          <Button
+            variant="ghost"
+            size="sm"
+            onClick={() => {
+              setWalletId(undefined);
+              setStartDate(undefined);
+              setEndDate(undefined);
+              setPage(1);
+            }}
+          >
+            Limpiar filtros
+          </Button>
+        )}
+      </div>
+
+      {isLoading ? (
+        <p className="text-sm text-muted-foreground">Cargando...</p>
+      ) : (
+        <>
+          {mobilePagination}
+
+          <div className="space-y-2 sm:hidden">
+            {movements.map((m) => {
+              const wallet = wallets?.find((w) => w.id === m.walletId);
+              return (
+                <div
+                  key={m.id}
+                  className="rounded-lg border bg-card p-3 text-sm"
+                >
+                  <div className="flex items-start justify-between gap-3">
+                    <TypeBadge type={m.type} />
+                    <span
+                      className={`tabular-nums font-medium ${
+                        m.amount >= 0
+                          ? "text-emerald-600 dark:text-emerald-400"
+                          : "text-red-600 dark:text-red-400"
+                      }`}
+                    >
+                      {m.amount >= 0 ? "+" : ""}
+                      {amountFormatter.format(m.amount)}
+                    </span>
+                  </div>
+
+                  <div className="mt-2 space-y-1">
+                    {m.description && (
+                      <p className="text-muted-foreground">{m.description}</p>
+                    )}
+                    <div className="flex items-center gap-2 text-xs text-muted-foreground">
+                      {wallet && <span>{wallet.name}</span>}
+                      <span>&middot;</span>
+                      <span>{dateFormatter.format(new Date(m.createdAt))}</span>
+                    </div>
+                  </div>
+                </div>
+              );
+            })}
+            {movements.length === 0 && (
+              <div className="rounded-lg border px-3 py-8 text-center text-sm text-muted-foreground">
+                No hay movimientos para mostrar.
+              </div>
+            )}
+          </div>
+
+          <div className="hidden overflow-x-auto rounded-lg border sm:block">
+            <table className="w-full text-sm">
+              <thead>
+                {table.getHeaderGroups().map((headerGroup) => (
+                  <tr key={headerGroup.id} className="border-b bg-muted/50">
+                    {headerGroup.headers.map((header) => (
+                      <th
+                        key={header.id}
+                        className="px-3 py-2 text-left text-xs font-medium text-muted-foreground"
+                      >
+                        {flexRender(
+                          header.column.columnDef.header,
+                          header.getContext(),
+                        )}
+                      </th>
+                    ))}
+                  </tr>
+                ))}
+              </thead>
+              <tbody>
+                {table.getRowModel().rows.map((row) => (
+                  <tr
+                    key={row.id}
+                    className="border-b last:border-0 hover:bg-muted/30"
+                  >
+                    {row.getVisibleCells().map((cell) => (
+                      <td key={cell.id} className="px-3 py-2.5">
+                        {flexRender(
+                          cell.column.columnDef.cell,
+                          cell.getContext(),
+                        )}
+                      </td>
+                    ))}
+                  </tr>
+                ))}
+                {table.getRowModel().rows.length === 0 && (
+                  <tr>
+                    <td
+                      colSpan={columns.length}
+                      className="px-3 py-8 text-center text-sm text-muted-foreground"
+                    >
+                      No hay movimientos para mostrar.
+                    </td>
+                  </tr>
+                )}
+              </tbody>
+            </table>
+          </div>
+
+          {mobilePagination}
+
+          {totalPages > 1 && (
+            <Pagination className="hidden sm:flex">
+              <PaginationContent>
+                <PaginationItem>
+                  <PaginationLink
+                    onClick={(e) => {
+                      e.preventDefault();
+                      setPage(1);
+                    }}
+                    href="#"
+                    aria-label="Ir a la primera página"
+                    className={
+                      page <= 1 ? "pointer-events-none opacity-50" : ""
+                    }
+                  >
+                    <SkipBackIcon className="size-4" />
+                  </PaginationLink>
+                </PaginationItem>
+                <PaginationItem>
+                  <PaginationPrevious
+                    onClick={(e) => {
+                      e.preventDefault();
+                      if (page > 1) setPage(page - 1);
+                    }}
+                    href="#"
+                    className={
+                      page <= 1 ? "pointer-events-none opacity-50" : ""
+                    }
+                    text="Anterior"
+                  />
+                </PaginationItem>
+                {currentGroup > 0 && (
+                  <PaginationItem>
+                    <PaginationLink
+                      onClick={(e) => {
+                        e.preventDefault();
+                        setPage(startPage - 1);
+                      }}
+                      href="#"
+                      aria-label="Ir al grupo anterior"
+                    >
+                      <ChevronsLeftIcon className="size-4" />
+                    </PaginationLink>
+                  </PaginationItem>
+                )}
+                {Array.from(
+                  { length: endPage - startPage + 1 },
+                  (_, i) => startPage + i,
+                ).map((p) => (
+                  <PaginationItem key={p}>
+                    <PaginationLink
+                      isActive={p === page}
+                      onClick={(e) => {
+                        e.preventDefault();
+                        setPage(p);
+                      }}
+                      href="#"
+                    >
+                      {p}
+                    </PaginationLink>
+                  </PaginationItem>
+                ))}
+                {(currentGroup + 1) * GROUP_SIZE < totalPages && (
+                  <PaginationItem>
+                    <PaginationLink
+                      onClick={(e) => {
+                        e.preventDefault();
+                        setPage(endPage + 1);
+                      }}
+                      href="#"
+                      aria-label="Ir al siguiente grupo"
+                    >
+                      <ChevronsRightIcon className="size-4" />
+                    </PaginationLink>
+                  </PaginationItem>
+                )}
+                <PaginationItem>
+                  <PaginationNext
+                    onClick={(e) => {
+                      e.preventDefault();
+                      if (page < totalPages) setPage(page + 1);
+                    }}
+                    href="#"
+                    className={
+                      page >= totalPages ? "pointer-events-none opacity-50" : ""
+                    }
+                    text="Siguiente"
+                  />
+                </PaginationItem>
+                <PaginationItem>
+                  <PaginationLink
+                    onClick={(e) => {
+                      e.preventDefault();
+                      setPage(totalPages);
+                    }}
+                    href="#"
+                    aria-label="Ir a la última página"
+                    className={
+                      page >= totalPages ? "pointer-events-none opacity-50" : ""
+                    }
+                  >
+                    <SkipForwardIcon className="size-4" />
+                  </PaginationLink>
+                </PaginationItem>
+              </PaginationContent>
+            </Pagination>
+          )}
+        </>
+      )}
+    </div>
+  );
+}

apps/frontend/src/features/wallets/WalletsPage.tsx

@@ -0,0 +1,42 @@
+import { useState } from "react";
+import { Plus } from "lucide-react";
+import { useWallets } from "@/lib/queries";
+import { WalletCard } from "./components/WalletCard";
+import { CreateWalletDialog } from "./components/CreateWalletDialog";
+
+export function WalletsPage() {
+  const { data: wallets, isLoading } = useWallets();
+  const [createOpen, setCreateOpen] = useState(false);
+
+  return (
+    <div className="space-y-4">
+      <div className="flex items-center justify-between">
+        <h1 className="text-2xl font-semibold">Billeteras</h1>
+        <button
+          type="button"
+          onClick={() => setCreateOpen(true)}
+          className="inline-flex items-center gap-2 rounded-lg bg-primary px-3 py-1.5 text-sm font-medium text-primary-foreground hover:bg-primary/90 transition-colors cursor-pointer"
+        >
+          <Plus className="size-4" />
+          Nueva billetera
+        </button>
+      </div>
+
+      {isLoading ? (
+        <p className="text-sm text-muted-foreground">Cargando...</p>
+      ) : wallets && wallets.length > 0 ? (
+        <div className="grid gap-4 sm:grid-cols-2 lg:grid-cols-3">
+          {wallets.map((wallet) => (
+            <WalletCard key={wallet.id} wallet={wallet} />
+          ))}
+        </div>
+      ) : (
+        <p className="text-sm text-muted-foreground">
+          No hay billeteras. Creá una para empezar.
+        </p>
+      )}
+
+      <CreateWalletDialog open={createOpen} onOpenChange={setCreateOpen} />
+    </div>
+  );
+}

apps/frontend/src/features/wallets/components/AdjustBalanceDialog.tsx

@@ -0,0 +1,131 @@
+import { zodResolver } from "@hookform/resolvers/zod";
+import { useForm } from "react-hook-form";
+import { z } from "zod";
+import { Button } from "@/components/ui/button";
+import {
+  ResponsiveDialog,
+  ResponsiveDialogContent,
+  ResponsiveDialogFooter,
+  ResponsiveDialogHeader,
+  ResponsiveDialogTitle,
+} from "@/components/ui/responsive-dialog";
+import { useAdjustBalance } from "@/lib/queries";
+import type { Wallet } from "@/lib/api";
+
+const adjustSchema = z.object({
+  newBalance: z.number().min(0, "El saldo no puede ser negativo"),
+  description: z.string().max(255).optional(),
+});
+
+type AdjustFormValues = z.infer<typeof adjustSchema>;
+
+interface AdjustBalanceDialogProps {
+  wallet: Wallet;
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+}
+
+export function AdjustBalanceDialog({
+  wallet,
+  open,
+  onOpenChange,
+}: AdjustBalanceDialogProps) {
+  const adjust = useAdjustBalance();
+
+  const {
+    register,
+    handleSubmit,
+    formState: { errors, isSubmitting },
+    reset,
+  } = useForm<AdjustFormValues>({
+    resolver: zodResolver(adjustSchema),
+    defaultValues: { newBalance: wallet.balance, description: "" },
+  });
+
+  function handleClose(open: boolean) {
+    onOpenChange(open);
+    if (!open) reset();
+  }
+
+  async function onSubmit(data: AdjustFormValues) {
+    await adjust.mutateAsync({
+      id: wallet.id,
+      data: {
+        newBalance: data.newBalance,
+        description: data.description || undefined,
+      },
+    });
+    handleClose(false);
+  }
+
+  return (
+    <ResponsiveDialog open={open} onOpenChange={handleClose}>
+      <ResponsiveDialogContent>
+        <ResponsiveDialogHeader>
+          <ResponsiveDialogTitle>
+            Ajustar saldo de {wallet.name}
+          </ResponsiveDialogTitle>
+        </ResponsiveDialogHeader>
+
+        <p className="text-sm text-muted-foreground">
+          Saldo actual: {wallet.balance}
+        </p>
+
+        <form
+          id="adjust-form"
+          onSubmit={handleSubmit(onSubmit)}
+          className="flex flex-col gap-4"
+        >
+          <div className="flex flex-col gap-1.5">
+            <label htmlFor="adjust-balance" className="text-sm font-medium">
+              Nuevo saldo
+            </label>
+            <input
+              id="adjust-balance"
+              type="number"
+              step="0.01"
+              min="0"
+              {...register("newBalance", { valueAsNumber: true })}
+              className="h-8 rounded-lg border border-input bg-background px-2.5 text-sm outline-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50"
+            />
+            {errors.newBalance && (
+              <span className="text-xs text-destructive">
+                {errors.newBalance.message}
+              </span>
+            )}
+          </div>
+
+          <div className="flex flex-col gap-1.5">
+            <label htmlFor="adjust-desc" className="text-sm font-medium">
+              Motivo (opcional)
+            </label>
+            <input
+              id="adjust-desc"
+              {...register("description")}
+              placeholder="Ej: Corrección"
+              className="h-8 rounded-lg border border-input bg-background px-2.5 text-sm outline-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50"
+            />
+            {errors.description && (
+              <span className="text-xs text-destructive">
+                {errors.description.message}
+              </span>
+            )}
+          </div>
+        </form>
+
+        <ResponsiveDialogFooter>
+          <Button
+            variant="outline"
+            onClick={() => handleClose(false)}
+            disabled={isSubmitting}
+          >
+            Cancelar
+          </Button>
+          <Button type="submit" form="adjust-form" disabled={isSubmitting}>
+            Ajustar
+          </Button>
+        </ResponsiveDialogFooter>
+      </ResponsiveDialogContent>
+    </ResponsiveDialog>
+  );
+}

apps/frontend/src/features/wallets/components/CreateWalletDialog.tsx

@@ -0,0 +1,165 @@
+import { zodResolver } from "@hookform/resolvers/zod";
+import { useForm } from "react-hook-form";
+import { z } from "zod";
+import { Button } from "@/components/ui/button";
+import {
+  ResponsiveDialog,
+  ResponsiveDialogContent,
+  ResponsiveDialogFooter,
+  ResponsiveDialogHeader,
+  ResponsiveDialogTitle,
+} from "@/components/ui/responsive-dialog";
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@/components/ui/select";
+import { useCreateWallet } from "@/lib/queries";
+
+const createWalletSchema = z.object({
+  name: z.string().min(1, "El nombre es obligatorio").max(100),
+  currency: z.string().min(1, "La moneda es obligatoria"),
+  initialBalance: z.number().nonnegative(),
+});
+
+type CreateWalletFormValues = z.infer<typeof createWalletSchema>;
+
+interface CreateWalletDialogProps {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+}
+
+const commonCurrencies = ["ARS", "USD", "USDC", "EUR", "BRL", "USDT"];
+
+export function CreateWalletDialog({
+  open,
+  onOpenChange,
+}: CreateWalletDialogProps) {
+  const createWallet = useCreateWallet();
+
+  const {
+    register,
+    handleSubmit,
+    formState: { errors, isSubmitting },
+    reset,
+    setValue,
+    watch,
+  } = useForm<CreateWalletFormValues>({
+    resolver: zodResolver(createWalletSchema),
+    defaultValues: { name: "", currency: "", initialBalance: 0 },
+  });
+
+  const currency = watch("currency");
+
+  function handleClose(open: boolean) {
+    onOpenChange(open);
+    if (!open) reset();
+  }
+
+  async function onSubmit(data: CreateWalletFormValues) {
+    await createWallet.mutateAsync({
+      name: data.name,
+      currency: data.currency,
+      initialBalance: data.initialBalance,
+    });
+    handleClose(false);
+  }
+
+  return (
+    <ResponsiveDialog open={open} onOpenChange={handleClose}>
+      <ResponsiveDialogContent>
+        <ResponsiveDialogHeader>
+          <ResponsiveDialogTitle>Nueva billetera</ResponsiveDialogTitle>
+        </ResponsiveDialogHeader>
+
+        <form
+          id="create-wallet-form"
+          onSubmit={handleSubmit(onSubmit)}
+          className="flex flex-col gap-4"
+        >
+          <div className="flex flex-col gap-1.5">
+            <label htmlFor="name" className="text-sm font-medium">
+              Nombre
+            </label>
+            <input
+              id="name"
+              {...register("name")}
+              placeholder="Ej: Mercado Pago"
+              className="h-8 rounded-lg border border-input bg-background px-2.5 text-sm outline-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50"
+            />
+            {errors.name && (
+              <span className="text-xs text-destructive">
+                {errors.name.message}
+              </span>
+            )}
+          </div>
+
+          <div className="flex flex-col gap-1.5">
+            <label htmlFor="currency" className="text-sm font-medium">
+              Moneda
+            </label>
+            <Select
+              value={currency}
+              onValueChange={(v) => setValue("currency", v)}
+            >
+              <SelectTrigger className="h-8">
+                <SelectValue placeholder="Seleccionar moneda" />
+              </SelectTrigger>
+              <SelectContent>
+                {commonCurrencies.map((c) => (
+                  <SelectItem key={c} value={c}>
+                    {c}
+                  </SelectItem>
+                ))}
+              </SelectContent>
+            </Select>
+            {errors.currency && (
+              <span className="text-xs text-destructive">
+                {errors.currency.message}
+              </span>
+            )}
+          </div>
+
+          <div className="flex flex-col gap-1.5">
+            <label htmlFor="initialBalance" className="text-sm font-medium">
+              Saldo inicial
+            </label>
+            <input
+              id="initialBalance"
+              type="number"
+              step="0.01"
+              min="0"
+              {...register("initialBalance", { valueAsNumber: true })}
+              placeholder="0"
+              className="h-8 rounded-lg border border-input bg-background px-2.5 text-sm outline-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50"
+            />
+            {errors.initialBalance && (
+              <span className="text-xs text-destructive">
+                {errors.initialBalance.message}
+              </span>
+            )}
+          </div>
+        </form>
+
+        <ResponsiveDialogFooter>
+          <Button
+            variant="outline"
+            onClick={() => handleClose(false)}
+            disabled={isSubmitting}
+          >
+            Cancelar
+          </Button>
+          <Button
+            type="submit"
+            form="create-wallet-form"
+            disabled={isSubmitting}
+          >
+            Crear
+          </Button>
+        </ResponsiveDialogFooter>
+      </ResponsiveDialogContent>
+    </ResponsiveDialog>
+  );
+}

apps/frontend/src/features/wallets/components/DepositDialog.tsx

@@ -0,0 +1,128 @@
+import { zodResolver } from "@hookform/resolvers/zod";
+import { useForm } from "react-hook-form";
+import { z } from "zod";
+import { Button } from "@/components/ui/button";
+import {
+  ResponsiveDialog,
+  ResponsiveDialogContent,
+  ResponsiveDialogFooter,
+  ResponsiveDialogHeader,
+  ResponsiveDialogTitle,
+} from "@/components/ui/responsive-dialog";
+import { useDepositWallet } from "@/lib/queries";
+import type { Wallet } from "@/lib/api";
+
+const depositSchema = z.object({
+  amount: z.number().positive("El monto debe ser mayor a 0"),
+  description: z.string().max(255).optional(),
+});
+
+type DepositFormValues = z.infer<typeof depositSchema>;
+
+interface DepositDialogProps {
+  wallet: Wallet;
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+}
+
+export function DepositDialog({
+  wallet,
+  open,
+  onOpenChange,
+}: DepositDialogProps) {
+  const deposit = useDepositWallet();
+
+  const {
+    register,
+    handleSubmit,
+    formState: { errors, isSubmitting },
+    reset,
+  } = useForm<DepositFormValues>({
+    resolver: zodResolver(depositSchema),
+    defaultValues: { amount: 0, description: "" },
+  });
+
+  function handleClose(open: boolean) {
+    onOpenChange(open);
+    if (!open) reset();
+  }
+
+  async function onSubmit(data: DepositFormValues) {
+    await deposit.mutateAsync({
+      id: wallet.id,
+      data: {
+        amount: data.amount,
+        description: data.description || undefined,
+      },
+    });
+    handleClose(false);
+  }
+
+  return (
+    <ResponsiveDialog open={open} onOpenChange={handleClose}>
+      <ResponsiveDialogContent>
+        <ResponsiveDialogHeader>
+          <ResponsiveDialogTitle>
+            Depositar en {wallet.name}
+          </ResponsiveDialogTitle>
+        </ResponsiveDialogHeader>
+
+        <form
+          id="deposit-form"
+          onSubmit={handleSubmit(onSubmit)}
+          className="flex flex-col gap-4"
+        >
+          <div className="flex flex-col gap-1.5">
+            <label htmlFor="deposit-amount" className="text-sm font-medium">
+              Monto
+            </label>
+            <input
+              id="deposit-amount"
+              type="number"
+              step="0.01"
+              min="0"
+              {...register("amount", { valueAsNumber: true })}
+              placeholder="1000"
+              className="h-8 rounded-lg border border-input bg-background px-2.5 text-sm outline-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50"
+            />
+            {errors.amount && (
+              <span className="text-xs text-destructive">
+                {errors.amount.message}
+              </span>
+            )}
+          </div>
+
+          <div className="flex flex-col gap-1.5">
+            <label htmlFor="deposit-desc" className="text-sm font-medium">
+              Descripción (opcional)
+            </label>
+            <input
+              id="deposit-desc"
+              {...register("description")}
+              placeholder="Ej: Sueldo"
+              className="h-8 rounded-lg border border-input bg-background px-2.5 text-sm outline-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50"
+            />
+            {errors.description && (
+              <span className="text-xs text-destructive">
+                {errors.description.message}
+              </span>
+            )}
+          </div>
+        </form>
+
+        <ResponsiveDialogFooter>
+          <Button
+            variant="outline"
+            onClick={() => handleClose(false)}
+            disabled={isSubmitting}
+          >
+            Cancelar
+          </Button>
+          <Button type="submit" form="deposit-form" disabled={isSubmitting}>
+            Depositar
+          </Button>
+        </ResponsiveDialogFooter>
+      </ResponsiveDialogContent>
+    </ResponsiveDialog>
+  );
+}

apps/frontend/src/features/wallets/components/EditWalletDialog.tsx

@@ -0,0 +1,142 @@
+import { zodResolver } from "@hookform/resolvers/zod";
+import { useForm } from "react-hook-form";
+import { z } from "zod";
+import { Button } from "@/components/ui/button";
+import {
+  ResponsiveDialog,
+  ResponsiveDialogContent,
+  ResponsiveDialogFooter,
+  ResponsiveDialogHeader,
+  ResponsiveDialogTitle,
+} from "@/components/ui/responsive-dialog";
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@/components/ui/select";
+import { useUpdateWallet } from "@/lib/queries";
+import type { Wallet } from "@/lib/api";
+
+const editWalletSchema = z.object({
+  name: z.string().min(1, "El nombre es obligatorio").max(100),
+  currency: z.string().min(1, "La moneda es obligatoria"),
+});
+
+type EditWalletFormValues = z.infer<typeof editWalletSchema>;
+
+interface EditWalletDialogProps {
+  wallet: Wallet;
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+}
+
+const commonCurrencies = ["ARS", "USD", "USDC", "EUR", "BRL", "USDT"];
+
+export function EditWalletDialog({
+  wallet,
+  open,
+  onOpenChange,
+}: EditWalletDialogProps) {
+  const updateWallet = useUpdateWallet();
+
+  const {
+    register,
+    handleSubmit,
+    formState: { errors, isSubmitting },
+    reset,
+    setValue,
+    watch,
+  } = useForm<EditWalletFormValues>({
+    resolver: zodResolver(editWalletSchema),
+    defaultValues: { name: wallet.name, currency: wallet.currency },
+  });
+
+  const currency = watch("currency");
+
+  function handleClose(open: boolean) {
+    onOpenChange(open);
+    if (!open) reset();
+  }
+
+  async function onSubmit(data: EditWalletFormValues) {
+    await updateWallet.mutateAsync({ id: wallet.id, data });
+    handleClose(false);
+  }
+
+  return (
+    <ResponsiveDialog open={open} onOpenChange={handleClose}>
+      <ResponsiveDialogContent>
+        <ResponsiveDialogHeader>
+          <ResponsiveDialogTitle>Editar billetera</ResponsiveDialogTitle>
+        </ResponsiveDialogHeader>
+
+        <form
+          id="edit-wallet-form"
+          onSubmit={handleSubmit(onSubmit)}
+          className="flex flex-col gap-4"
+        >
+          <div className="flex flex-col gap-1.5">
+            <label htmlFor="edit-name" className="text-sm font-medium">
+              Nombre
+            </label>
+            <input
+              id="edit-name"
+              {...register("name")}
+              className="h-8 rounded-lg border border-input bg-background px-2.5 text-sm outline-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50"
+            />
+            {errors.name && (
+              <span className="text-xs text-destructive">
+                {errors.name.message}
+              </span>
+            )}
+          </div>
+
+          <div className="flex flex-col gap-1.5">
+            <label htmlFor="edit-currency" className="text-sm font-medium">
+              Moneda
+            </label>
+            <Select
+              value={currency}
+              onValueChange={(v) => setValue("currency", v)}
+            >
+              <SelectTrigger className="h-8">
+                <SelectValue />
+              </SelectTrigger>
+              <SelectContent>
+                {commonCurrencies.map((c) => (
+                  <SelectItem key={c} value={c}>
+                    {c}
+                  </SelectItem>
+                ))}
+              </SelectContent>
+            </Select>
+            {errors.currency && (
+              <span className="text-xs text-destructive">
+                {errors.currency.message}
+              </span>
+            )}
+          </div>
+        </form>
+
+        <ResponsiveDialogFooter>
+          <Button
+            variant="outline"
+            onClick={() => handleClose(false)}
+            disabled={isSubmitting}
+          >
+            Cancelar
+          </Button>
+          <Button
+            type="submit"
+            form="edit-wallet-form"
+            disabled={isSubmitting}
+          >
+            Guardar
+          </Button>
+        </ResponsiveDialogFooter>
+      </ResponsiveDialogContent>
+    </ResponsiveDialog>
+  );
+}

apps/frontend/src/features/wallets/components/TransferDialog.tsx

@@ -0,0 +1,211 @@
+import { zodResolver } from "@hookform/resolvers/zod";
+import { Controller, useForm } from "react-hook-form";
+import { z } from "zod";
+import { Button } from "@/components/ui/button";
+import {
+  ResponsiveDialog,
+  ResponsiveDialogContent,
+  ResponsiveDialogFooter,
+  ResponsiveDialogHeader,
+  ResponsiveDialogTitle,
+} from "@/components/ui/responsive-dialog";
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@/components/ui/select";
+import { useTransferWallet, useWallets } from "@/lib/queries";
+import type { Wallet } from "@/lib/api";
+
+const transferSchema = z.object({
+  toWalletId: z.number().positive("Seleccioná una billetera destino"),
+  outgoingAmount: z.number().positive("El monto saliente debe ser mayor a 0"),
+  incomingAmount: z.number().positive("El monto entrante debe ser mayor a 0"),
+  description: z.string().max(255).optional(),
+});
+
+type TransferFormValues = z.infer<typeof transferSchema>;
+
+interface TransferDialogProps {
+  sourceWallet: Wallet;
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+}
+
+export function TransferDialog({
+  sourceWallet,
+  open,
+  onOpenChange,
+}: TransferDialogProps) {
+  const { data: wallets } = useWallets();
+  const transfer = useTransferWallet();
+
+  const otherWallets =
+    wallets?.filter((w) => w.id !== sourceWallet.id) ?? [];
+
+  const {
+    register,
+    handleSubmit,
+    control,
+    formState: { errors, isSubmitting },
+    reset,
+  } = useForm<TransferFormValues>({
+    resolver: zodResolver(transferSchema),
+    defaultValues: {
+      toWalletId: 0,
+      outgoingAmount: 0,
+      incomingAmount: 0,
+      description: "",
+    },
+  });
+
+  function handleClose(open: boolean) {
+    onOpenChange(open);
+    if (!open) reset();
+  }
+
+  async function onSubmit(data: TransferFormValues) {
+    await transfer.mutateAsync({
+      fromWalletId: sourceWallet.id,
+      toWalletId: data.toWalletId,
+      outgoingAmount: data.outgoingAmount,
+      incomingAmount: data.incomingAmount,
+      description: data.description || undefined,
+    });
+    handleClose(false);
+  }
+
+  return (
+    <ResponsiveDialog open={open} onOpenChange={handleClose}>
+      <ResponsiveDialogContent>
+        <ResponsiveDialogHeader>
+          <ResponsiveDialogTitle>
+            Transferir desde {sourceWallet.name}
+          </ResponsiveDialogTitle>
+        </ResponsiveDialogHeader>
+
+        <p className="text-sm text-muted-foreground">
+          Saldo disponible: {sourceWallet.balance}
+        </p>
+
+        <form
+          id="transfer-form"
+          onSubmit={handleSubmit(onSubmit)}
+          className="flex flex-col gap-4"
+        >
+          <div className="flex flex-col gap-1.5">
+            <label className="text-sm font-medium">Billetera destino</label>
+            <Controller
+              control={control}
+              name="toWalletId"
+              render={({ field }) => (
+                <Select
+                  value={field.value ? String(field.value) : ""}
+                  onValueChange={(v) => field.onChange(Number(v))}
+                >
+                  <SelectTrigger className="h-8">
+                    <SelectValue placeholder="Seleccionar destino" />
+                  </SelectTrigger>
+                  <SelectContent>
+                    {otherWallets.map((w) => (
+                      <SelectItem key={w.id} value={String(w.id)}>
+                        {w.name} ({w.currency})
+                      </SelectItem>
+                    ))}
+                  </SelectContent>
+                </Select>
+              )}
+            />
+            {errors.toWalletId && (
+              <span className="text-xs text-destructive">
+                {errors.toWalletId.message}
+              </span>
+            )}
+          </div>
+
+          <div className="flex flex-col gap-1.5">
+            <label
+              htmlFor="transfer-outgoing"
+              className="text-sm font-medium"
+            >
+              Monto saliente (de {sourceWallet.name})
+            </label>
+            <input
+              id="transfer-outgoing"
+              type="number"
+              step="0.01"
+              min="0"
+              {...register("outgoingAmount", { valueAsNumber: true })}
+              placeholder="1000"
+              className="h-8 rounded-lg border border-input bg-background px-2.5 text-sm outline-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50"
+            />
+            {errors.outgoingAmount && (
+              <span className="text-xs text-destructive">
+                {errors.outgoingAmount.message}
+              </span>
+            )}
+          </div>
+
+          <div className="flex flex-col gap-1.5">
+            <label
+              htmlFor="transfer-incoming"
+              className="text-sm font-medium"
+            >
+              Monto entrante (en destino)
+            </label>
+            <input
+              id="transfer-incoming"
+              type="number"
+              step="0.01"
+              min="0"
+              {...register("incomingAmount", { valueAsNumber: true })}
+              placeholder="950"
+              className="h-8 rounded-lg border border-input bg-background px-2.5 text-sm outline-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50"
+            />
+            {errors.incomingAmount && (
+              <span className="text-xs text-destructive">
+                {errors.incomingAmount.message}
+              </span>
+            )}
+            <span className="text-xs text-muted-foreground">
+              Si hay comisiones o diferencia de cotización, el monto entrante
+              puede ser menor al saliente.
+            </span>
+          </div>
+
+          <div className="flex flex-col gap-1.5">
+            <label htmlFor="transfer-desc" className="text-sm font-medium">
+              Descripción (opcional)
+            </label>
+            <input
+              id="transfer-desc"
+              {...register("description")}
+              placeholder="Ej: Transferencia a Binance"
+              className="h-8 rounded-lg border border-input bg-background px-2.5 text-sm outline-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50"
+            />
+            {errors.description && (
+              <span className="text-xs text-destructive">
+                {errors.description.message}
+              </span>
+            )}
+          </div>
+        </form>
+
+        <ResponsiveDialogFooter>
+          <Button
+            variant="outline"
+            onClick={() => handleClose(false)}
+            disabled={isSubmitting}
+          >
+            Cancelar
+          </Button>
+          <Button type="submit" form="transfer-form" disabled={isSubmitting}>
+            Transferir
+          </Button>
+        </ResponsiveDialogFooter>
+      </ResponsiveDialogContent>
+    </ResponsiveDialog>
+  );
+}

apps/frontend/src/features/wallets/components/WalletCard.tsx

@@ -0,0 +1,185 @@
+import { useState } from "react";
+import {
+  ArrowDownToLine,
+  ArrowLeftRight,
+  ArrowUpDown,
+  History,
+  PencilLine,
+  Star,
+} from "lucide-react";
+import { useNavigate } from "@tanstack/react-router";
+import { Button } from "@/components/ui/button";
+import {
+  Tooltip,
+  TooltipContent,
+  TooltipProvider,
+  TooltipTrigger,
+} from "@/components/ui/tooltip";
+import type { Wallet } from "@/lib/api";
+import { useSetDefaultWallet } from "@/lib/queries";
+import { DepositDialog } from "./DepositDialog";
+import { AdjustBalanceDialog } from "./AdjustBalanceDialog";
+import { TransferDialog } from "./TransferDialog";
+import { EditWalletDialog } from "./EditWalletDialog";
+
+const balanceFormatter = new Intl.NumberFormat("es-AR", {
+  minimumFractionDigits: 2,
+  maximumFractionDigits: 4,
+});
+
+interface WalletCardProps {
+  wallet: Wallet;
+}
+
+export function WalletCard({ wallet }: WalletCardProps) {
+  const navigate = useNavigate();
+  const setDefaultWallet = useSetDefaultWallet();
+  const [depositOpen, setDepositOpen] = useState(false);
+  const [adjustOpen, setAdjustOpen] = useState(false);
+  const [transferOpen, setTransferOpen] = useState(false);
+  const [editOpen, setEditOpen] = useState(false);
+
+  return (
+    <>
+      <div className="rounded-lg border p-4 space-y-3">
+        <div className="flex items-start justify-between">
+          <div className="flex items-center gap-2">
+            <p className="font-medium">{wallet.name}</p>
+            {wallet.isDefault && (
+              <span className="rounded-full bg-primary/10 px-2 py-0.5 text-[10px] font-medium text-primary">
+                Default
+              </span>
+            )}
+          </div>
+          <div className="flex items-center gap-1">
+            <TooltipProvider>
+              <Tooltip>
+                <TooltipTrigger asChild>
+                  <button
+                    type="button"
+                    onClick={() => setDefaultWallet.mutate(wallet.id)}
+                    className={`transition-colors cursor-pointer ${
+                      wallet.isDefault
+                        ? "text-yellow-500 hover:text-yellow-600"
+                        : "text-muted-foreground hover:text-foreground"
+                    }`}
+                  >
+                    <Star
+                      className="size-4"
+                      fill={wallet.isDefault ? "currentColor" : "none"}
+                    />
+                  </button>
+                </TooltipTrigger>
+                <TooltipContent>
+                  {wallet.isDefault
+                    ? "Billetera predeterminada"
+                    : "Marcar como predeterminada"}
+                </TooltipContent>
+              </Tooltip>
+            </TooltipProvider>
+            <button
+              type="button"
+              onClick={() => setEditOpen(true)}
+              className="text-muted-foreground hover:text-foreground transition-colors cursor-pointer"
+            >
+              <PencilLine className="size-4" />
+            </button>
+          </div>
+        </div>
+
+        <p className="text-2xl font-bold tabular-nums">
+          {balanceFormatter.format(wallet.balance)}
+        </p>
+
+        <div className="flex gap-1.5 flex-wrap">
+          <TooltipProvider>
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <Button
+                  variant="outline"
+                  size="icon"
+                  className="size-8"
+                  onClick={() => setDepositOpen(true)}
+                >
+                  <ArrowDownToLine className="size-4" />
+                </Button>
+              </TooltipTrigger>
+              <TooltipContent>Depositar</TooltipContent>
+            </Tooltip>
+          </TooltipProvider>
+
+          <TooltipProvider>
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <Button
+                  variant="outline"
+                  size="icon"
+                  className="size-8"
+                  onClick={() => setAdjustOpen(true)}
+                >
+                  <ArrowUpDown className="size-4" />
+                </Button>
+              </TooltipTrigger>
+              <TooltipContent>Ajustar saldo</TooltipContent>
+            </Tooltip>
+          </TooltipProvider>
+
+          <TooltipProvider>
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <Button
+                  variant="outline"
+                  size="icon"
+                  className="size-8"
+                  onClick={() => setTransferOpen(true)}
+                >
+                  <ArrowLeftRight className="size-4" />
+                </Button>
+              </TooltipTrigger>
+              <TooltipContent>Transferir</TooltipContent>
+            </Tooltip>
+          </TooltipProvider>
+
+          <TooltipProvider>
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <Button
+                  variant="outline"
+                  size="icon"
+                  className="size-8"
+                  onClick={() =>
+                    navigate({ to: "/wallets/movements", search: { walletId: wallet.id } })
+                  }
+                >
+                  <History className="size-4" />
+                </Button>
+              </TooltipTrigger>
+              <TooltipContent>Movimientos</TooltipContent>
+            </Tooltip>
+          </TooltipProvider>
+        </div>
+      </div>
+
+      <DepositDialog
+        wallet={wallet}
+        open={depositOpen}
+        onOpenChange={setDepositOpen}
+      />
+      <AdjustBalanceDialog
+        wallet={wallet}
+        open={adjustOpen}
+        onOpenChange={setAdjustOpen}
+      />
+      <TransferDialog
+        sourceWallet={wallet}
+        open={transferOpen}
+        onOpenChange={setTransferOpen}
+      />
+      <EditWalletDialog
+        wallet={wallet}
+        open={editOpen}
+        onOpenChange={setEditOpen}
+      />
+    </>
+  );
+}

apps/frontend/src/features/wallets/components/WalletMovementsDialog.tsx

@@ -0,0 +1,101 @@
+import { useWalletMovements } from "@/lib/queries";
+import type { Wallet } from "@/lib/api";
+import {
+  ResponsiveDialog,
+  ResponsiveDialogContent,
+  ResponsiveDialogHeader,
+  ResponsiveDialogTitle,
+} from "@/components/ui/responsive-dialog";
+
+const amountFormatter = new Intl.NumberFormat("es-AR", {
+  minimumFractionDigits: 2,
+  maximumFractionDigits: 4,
+});
+
+const dateFormatter = new Intl.DateTimeFormat("es-AR", {
+  day: "2-digit",
+  month: "2-digit",
+  year: "numeric",
+  hour: "2-digit",
+  minute: "2-digit",
+});
+
+const typeLabels: Record<string, string> = {
+  DEPOSIT: "Depósito",
+  WITHDRAWAL: "Extracción",
+  TRANSFER_IN: "Transferencia recibida",
+  TRANSFER_OUT: "Transferencia enviada",
+  ADJUSTMENT: "Ajuste",
+};
+
+interface WalletMovementsDialogProps {
+  wallet: Wallet;
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+}
+
+export function WalletMovementsDialog({
+  wallet,
+  open,
+  onOpenChange,
+}: WalletMovementsDialogProps) {
+  const { data: movements, isLoading } = useWalletMovements(
+    open ? wallet.id : 0,
+  );
+
+  return (
+    <ResponsiveDialog open={open} onOpenChange={onOpenChange}>
+      <ResponsiveDialogContent>
+        <ResponsiveDialogHeader>
+          <ResponsiveDialogTitle>
+            Movimientos de {wallet.name}
+          </ResponsiveDialogTitle>
+        </ResponsiveDialogHeader>
+
+        {isLoading ? (
+          <p className="text-sm text-muted-foreground">Cargando...</p>
+        ) : movements && movements.length > 0 ? (
+          <div className="max-h-96 space-y-1 overflow-y-auto">
+            {movements.map((m) => (
+              <div
+                key={m.id}
+                className="flex items-center justify-between rounded-md p-2 text-sm hover:bg-muted/50"
+              >
+                <div className="flex flex-col">
+                  <span className="font-medium">{typeLabels[m.type] ?? m.type}</span>
+                  {m.description && (
+                    <span className="text-xs text-muted-foreground">
+                      {m.description}
+                    </span>
+                  )}
+                  {m.transferGroupId && (
+                    <span className="text-xs text-muted-foreground font-mono">
+                      ID: {m.transferGroupId.slice(0, 8)}...
+                    </span>
+                  )}
+                  <span className="text-xs text-muted-foreground">
+                    {dateFormatter.format(new Date(m.createdAt))}
+                  </span>
+                </div>
+                <span
+                  className={`tabular-nums font-medium ${
+                    m.amount >= 0
+                      ? "text-emerald-600 dark:text-emerald-400"
+                      : "text-red-600 dark:text-red-400"
+                  }`}
+                >
+                  {m.amount >= 0 ? "+" : ""}
+                  {amountFormatter.format(m.amount)}
+                </span>
+              </div>
+            ))}
+          </div>
+        ) : (
+          <p className="text-sm text-muted-foreground">
+            Sin movimientos registrados.
+          </p>
+        )}
+      </ResponsiveDialogContent>
+    </ResponsiveDialog>
+  );
+}

apps/frontend/src/lib/api.ts

@@ -149,11 +149,15 @@ export type CreateNonPeriodicExpenseInput = {
   description: string;
   amount: number;
   dueDate: string;
+  walletId: number;
+  usdcConversionRate?: number;
 };
 
 export type PayExpenseInput = {
   amountPayed: number;
   paymentDate?: string;
+  walletId: number;
+  usdcConversionRate?: number;
 };
 
 export type UpdateExpenseInput = {
@@ -320,6 +324,144 @@ export function importPeriodicExpenses(file: File): Promise<ImportResult> {
   });
 }
 
+// Wallets
+
+export type Wallet = {
+  id: number;
+  name: string;
+  currency: string;
+  balance: number;
+  isDefault: boolean;
+  createdAt: string;
+  updatedAt: string;
+};
+
+export type WalletMovement = {
+  id: number;
+  walletId: number;
+  type:
+    | "DEPOSIT"
+    | "WITHDRAWAL"
+    | "TRANSFER_IN"
+    | "TRANSFER_OUT"
+    | "ADJUSTMENT";
+  amount: number;
+  description: string | null;
+  referenceWalletId: number | null;
+  transferGroupId: string | null;
+  createdAt: string;
+};
+
+export type CreateWalletInput = {
+  name: string;
+  currency: string;
+  initialBalance?: number;
+};
+
+export type DepositInput = {
+  amount: number;
+  description?: string;
+};
+
+export type AdjustBalanceInput = {
+  newBalance: number;
+  description?: string;
+};
+
+export type TransferInput = {
+  fromWalletId: number;
+  toWalletId: number;
+  outgoingAmount: number;
+  incomingAmount: number;
+  description?: string;
+};
+
+export function getWallets(): Promise<Wallet[]> {
+  return fetcher<Wallet[]>("/api/wallets");
+}
+
+export function createWallet(data: CreateWalletInput): Promise<Wallet> {
+  return mutator<Wallet>("/api/wallets", "POST", data);
+}
+
+export function updateWallet(
+  id: number,
+  data: { name: string; currency: string },
+): Promise<Wallet> {
+  return mutator<Wallet>(`/api/wallets/${id}`, "PUT", data);
+}
+
+export function deleteWallet(id: number): Promise<void> {
+  return mutator<void>(`/api/wallets/${id}`, "DELETE");
+}
+
+export function depositWallet(id: number, data: DepositInput): Promise<Wallet> {
+  return mutator<Wallet>(`/api/wallets/${id}/deposit`, "POST", data);
+}
+
+export function adjustBalance(
+  id: number,
+  data: AdjustBalanceInput,
+): Promise<Wallet> {
+  return mutator<Wallet>(`/api/wallets/${id}/adjust`, "POST", data);
+}
+
+export function transferWallet(
+  data: TransferInput,
+): Promise<{ from: Wallet; to: Wallet }> {
+  return mutator<{ from: Wallet; to: Wallet }>(
+    "/api/wallets/transfer",
+    "POST",
+    data,
+  );
+}
+
+export function setDefaultWallet(id: number): Promise<Wallet> {
+  return mutator<Wallet>(`/api/wallets/${id}/default`, "PUT");
+}
+
+export function getWalletMovements(id: number): Promise<WalletMovement[]> {
+  return fetcher<WalletMovement[]>(`/api/wallets/${id}/movements`);
+}
+
+export type WalletMovementsFilter = {
+  walletId?: number;
+  startDate?: string;
+  endDate?: string;
+  page?: number;
+  pageSize?: number;
+};
+
+export function getWalletMovementsFiltered(
+  filter: WalletMovementsFilter,
+): Promise<PaginatedResponse<WalletMovement>> {
+  const params = new URLSearchParams();
+  if (filter.walletId) params.set("walletId", String(filter.walletId));
+  if (filter.startDate) params.set("startDate", filter.startDate);
+  if (filter.endDate) params.set("endDate", filter.endDate);
+  if (filter.page) params.set("page", String(filter.page));
+  if (filter.pageSize) params.set("pageSize", String(filter.pageSize));
+  const qs = params.toString();
+  return fetcher<PaginatedResponse<WalletMovement>>(
+    `/api/wallets/movements${qs ? `?${qs}` : ""}`,
+  );
+}
+
+// Settings
+
+export type Setting = {
+  key: string;
+  value: string;
+};
+
+export function getSettings(): Promise<Setting[]> {
+  return fetcher<Setting[]>("/api/settings");
+}
+
+export function updateSetting(key: string, value: string): Promise<Setting> {
+  return mutator<Setting>("/api/settings", "PUT", { key, value });
+}
+
 // Telegram
 
 export type TelegramStatus = {

apps/frontend/src/lib/queries.ts

@@ -5,17 +5,24 @@ import {
   useQueryClient,
 } from "@tanstack/react-query";
 import {
+  type AdjustBalanceInput,
+  adjustBalance as adjustBalanceApi,
   type CreateNonPeriodicExpenseInput,
   type CreatePeriodicExpenseInput,
+  type CreateWalletInput,
   createNonPeriodicExpense as createNonPeriodicExpenseApi,
   createPeriodicExpense as createPeriodicExpenseApi,
+  createWallet as createWalletApi,
+  type DepositInput,
   deletePeriodicExpense as deletePeriodicExpenseApi,
+  deleteWallet as deleteWalletApi,
+  depositWallet as depositWalletApi,
   fetchQuotes,
   generateMonthlyExpense as generateMonthlyExpenseApi,
+  generateTelegramCode,
   getDailyMinMax,
   getDailyQuotes,
   getExpenses,
-  generateTelegramCode,
   getHistoricalMinMax,
   getMonthlyPayedTotal,
   getMonthlyTotals,
@@ -23,15 +30,25 @@ import {
   getPeriodicExpenses,
   getQuoteHistory,
   getQuotes,
+  getSettings,
   getTelegramStatus,
   getTotalPending,
+  getWalletMovements,
+  getWalletMovementsFiltered,
+  getWallets,
   importExpenses,
   importPeriodicExpenses,
   type PayExpenseInput,
   payExpense as payExpenseApi,
+  setDefaultWallet as setDefaultWalletApi,
+  type TransferInput,
+  transferWallet as transferWalletApi,
   type UpdateExpenseInput,
   updateExpense as updateExpenseApi,
   updatePeriodicExpense as updatePeriodicExpenseApi,
+  updateSetting as updateSettingApi,
+  updateWallet as updateWalletApi,
+  type WalletMovementsFilter,
 } from "./api";
 
 export const quoteKeys = {
@@ -249,6 +266,7 @@ export function useCreateNonPeriodicExpense() {
       createNonPeriodicExpenseApi(data),
     onSuccess: () => {
       queryClient.invalidateQueries({ queryKey: expenseKeys.all });
+      queryClient.invalidateQueries({ queryKey: walletKeys.all });
     },
   });
 }
@@ -280,6 +298,7 @@ export function usePayExpense() {
       payExpenseApi(id, data),
     onSuccess: () => {
       queryClient.invalidateQueries({ queryKey: expenseKeys.all });
+      queryClient.invalidateQueries({ queryKey: walletKeys.all });
     },
   });
 }
@@ -295,6 +314,141 @@ export function useUpdateExpense() {
   });
 }
 
+// Wallets
+
+export const walletKeys = {
+  all: ["wallets"] as const,
+  movements: (id: number) => ["wallets", id, "movements"] as const,
+  movementsFiltered: (filter: WalletMovementsFilter) =>
+    ["wallets", "movements", filter] as const,
+};
+
+export function useWallets() {
+  return useQuery({
+    queryKey: walletKeys.all,
+    queryFn: getWallets,
+    staleTime: 30_000,
+  });
+}
+
+export function useCreateWallet() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: (data: CreateWalletInput) => createWalletApi(data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: walletKeys.all });
+    },
+  });
+}
+
+export function useUpdateWallet() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: ({
+      id,
+      data,
+    }: {
+      id: number;
+      data: { name: string; currency: string };
+    }) => updateWalletApi(id, data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: walletKeys.all });
+    },
+  });
+}
+
+export function useDeleteWallet() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: (id: number) => deleteWalletApi(id),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: walletKeys.all });
+    },
+  });
+}
+
+export function useSetDefaultWallet() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: (id: number) => setDefaultWalletApi(id),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: walletKeys.all });
+    },
+  });
+}
+
+export function useDepositWallet() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: ({ id, data }: { id: number; data: DepositInput }) =>
+      depositWalletApi(id, data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: walletKeys.all });
+    },
+  });
+}
+
+export function useAdjustBalance() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: ({ id, data }: { id: number; data: AdjustBalanceInput }) =>
+      adjustBalanceApi(id, data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: walletKeys.all });
+    },
+  });
+}
+
+export function useTransferWallet() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: (data: TransferInput) => transferWalletApi(data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: walletKeys.all });
+    },
+  });
+}
+
+export function useWalletMovements(id: number) {
+  return useQuery({
+    queryKey: walletKeys.movements(id),
+    queryFn: () => getWalletMovements(id),
+  });
+}
+
+export function useWalletMovementsFiltered(filter: WalletMovementsFilter) {
+  return useQuery({
+    queryKey: walletKeys.movementsFiltered(filter),
+    placeholderData: keepPreviousData,
+    queryFn: () => getWalletMovementsFiltered(filter),
+  });
+}
+
+// Settings
+
+export const settingKeys = {
+  all: ["settings"] as const,
+};
+
+export function useSettings() {
+  return useQuery({
+    queryKey: settingKeys.all,
+    queryFn: getSettings,
+    staleTime: 60_000,
+  });
+}
+
+export function useUpdateSetting() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: ({ key, value }: { key: string; value: string }) =>
+      updateSettingApi(key, value),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: settingKeys.all });
+    },
+  });
+}
+
 // Telegram
 
 export function useTelegramStatus() {

apps/frontend/src/routes/_authenticated/settings.tsx

@@ -1,12 +1,14 @@
 import { createFileRoute } from "@tanstack/react-router";
 import { Check, Copy, RefreshCw } from "lucide-react";
-import { useState } from "react";
+import { useEffect, useState } from "react";
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
 import { useAuth } from "@/lib/auth-context";
 import {
   useGenerateTelegramCode,
+  useSettings,
   useTelegramStatus,
+  useUpdateSetting,
 } from "@/lib/queries";
 
 export const Route = createFileRoute("/_authenticated/settings")({
@@ -126,11 +128,79 @@ function SettingsPage() {
 
       <hr className="border-border" />
 
+      <SalaryMultiplierSection />
+
       <TelegramSection />
     </div>
   );
 }
 
+function SalaryMultiplierSection() {
+  const { data: settings, isLoading } = useSettings();
+  const updateSetting = useUpdateSetting();
+  const current =
+    settings?.find((s) => s.key === "salary_multiplier")?.value ?? "4500";
+  const [localValue, setLocalValue] = useState(current);
+  const [success, setSuccess] = useState(false);
+
+  useEffect(() => {
+    if (settings) {
+      const val = settings.find((s) => s.key === "salary_multiplier")?.value;
+      if (val) setLocalValue(val);
+    }
+  }, [settings]);
+
+  async function handleSave() {
+    setSuccess(false);
+    await updateSetting.mutateAsync({
+      key: "salary_multiplier",
+      value: localValue,
+    });
+    setSuccess(true);
+    setTimeout(() => setSuccess(false), 2000);
+  }
+
+  return (
+    <div className="space-y-4">
+      <div>
+        <h2 className="text-lg font-semibold tracking-tight">
+          Multiplicador de sueldo
+        </h2>
+        <p className="text-sm text-muted-foreground">
+          Valor para calcular el sueldo (Sueldo = BELO bid x este valor)
+        </p>
+      </div>
+
+      {isLoading ? (
+        <p className="text-sm text-muted-foreground">Cargando...</p>
+      ) : (
+        <div className="space-y-3">
+          <div className="flex items-center gap-2">
+            <Input
+              type="number"
+              value={localValue}
+              onChange={(e) => setLocalValue(e.target.value)}
+              className="w-32"
+            />
+            <Button
+              type="button"
+              onClick={handleSave}
+              disabled={updateSetting.isPending || localValue === current}
+            >
+              {updateSetting.isPending ? "Guardando..." : "Guardar"}
+            </Button>
+          </div>
+          {success && (
+            <p className="text-sm text-emerald-600">
+              Multiplicador actualizado correctamente
+            </p>
+          )}
+        </div>
+      )}
+    </div>
+  );
+}
+
 function TelegramSection() {
   const { data: status, isLoading } = useTelegramStatus();
   const {

apps/frontend/src/routes/_authenticated/wallets.index.tsx

@@ -0,0 +1,6 @@
+import { createFileRoute } from "@tanstack/react-router";
+import { WalletsPage } from "@/features/wallets/WalletsPage";
+
+export const Route = createFileRoute("/_authenticated/wallets/")({
+  component: WalletsPage,
+});

apps/frontend/src/routes/_authenticated/wallets.movements.tsx

@@ -0,0 +1,10 @@
+import { createFileRoute } from "@tanstack/react-router";
+import { z } from "zod";
+import { WalletMovementsPage } from "@/features/wallets/WalletMovementsPage";
+
+export const Route = createFileRoute("/_authenticated/wallets/movements")({
+  validateSearch: z.object({
+    walletId: z.coerce.number().optional(),
+  }),
+  component: WalletMovementsPage,
+});

apps/frontend/src/routes/_authenticated/wallets.tsx

@@ -0,0 +1,9 @@
+import { createFileRoute, Outlet } from "@tanstack/react-router";
+
+export const Route = createFileRoute("/_authenticated/wallets")({
+  component: WalletsLayout,
+});
+
+function WalletsLayout() {
+  return <Outlet />;
+}