diff --git a/MULTI_LANGUAGE_IMPLEMENTATION.md b/MULTI_LANGUAGE_IMPLEMENTATION.md
new file mode 100644
index 0000000..168150b
--- /dev/null
+++ b/MULTI_LANGUAGE_IMPLEMENTATION.md
@@ -0,0 +1,87 @@
+# Multi-Language Implementation
+
+## Overview
+Implemented a simple, lightweight multi-language system for the member dashboard with Indonesian (default) and English support.
+
+## Features
+- ✅ **Default Language**: Indonesian (ID)
+- ✅ **Optional Language**: English (EN)
+- ✅ **Persistent**: Language preference saved in localStorage
+- ✅ **Easy Toggle**: Language switcher in sidebar footer
+- ✅ **Type-Safe**: Full TypeScript support with autocomplete
+
+## Structure
+
+### Translation Files
+- `/apps/web/src/locales/id.ts` - Indonesian translations
+- `/apps/web/src/locales/en.ts` - English translations
+
+### Context & Hook
+- `/apps/web/src/contexts/LanguageContext.tsx` - Language context provider
+- Hook: `useLanguage()` - Access translations and language state
+
+### Components
+- `/apps/web/src/components/LanguageToggle.tsx` - Language switcher button
+
+## Usage
+
+### In Components
+```typescript
+import { useLanguage } from '@/contexts/LanguageContext'
+
+function MyComponent() {
+  const { t, language, setLanguage } = useLanguage()
+  
+  return (
+    <div>
+      <h1>{t.overview.title}</h1>
+      <p>{t.overview.totalBalance}</p>
+    </div>
+  )
+}
+```
+
+### Translation Structure
+```typescript
+{
+  common: { search, filter, add, edit, delete, ... },
+  nav: { overview, transactions, wallets, profile, logout },
+  overview: { ... },
+  transactions: { ... },
+  wallets: { ... },
+  profile: { ... },
+  // etc
+}
+```
+
+## Implementation Status
+
+### ✅ Completed
+1. Translation files (ID & EN)
+2. Language context & provider
+3. Language toggle component
+4. Sidebar navigation translated
+5. Build & lint passing
+
+### 🔄 Next Steps (To be implemented)
+1. Translate all member dashboard pages:
+   - Overview page
+   - Wallets page
+   - Transactions page
+   - Profile page
+2. Translate dialogs:
+   - WalletDialog
+   - TransactionDialog
+3. Update toast messages to use translations
+4. Test language switching
+
+## Admin Dashboard
+- **Remains English-only** (as requested)
+- No translation needed for admin pages
+
+## Benefits
+- ✅ No external dependencies
+- ✅ Type-safe with autocomplete
+- ✅ Easy to maintain
+- ✅ Fast performance
+- ✅ Can migrate to react-i18next later if needed
diff --git a/apps/web/src/App.tsx b/apps/web/src/App.tsx
index cbdc72d..354b610 100644
--- a/apps/web/src/App.tsx
+++ b/apps/web/src/App.tsx
@@ -1,5 +1,6 @@
 import { BrowserRouter, Routes, Route, Navigate } from 'react-router-dom'
 import { AuthProvider, useAuth } from './contexts/AuthContext'
+import { LanguageProvider } from './contexts/LanguageContext'
 import { ThemeProvider } from './components/ThemeProvider'
 import { Toaster } from './components/ui/sonner'
 import { Dashboard } from './components/Dashboard'
@@ -59,9 +60,10 @@ export default function App() {
   return (
     <BrowserRouter>
       <ThemeProvider defaultTheme="light" storageKey="tabungin-ui-theme">
-        <AuthProvider>
-          <Toaster />
-          <Routes>
+        <LanguageProvider>
+          <AuthProvider>
+            <Toaster />
+            <Routes>
             {/* Public Routes */}
             <Route path="/auth/login" element={<PublicRoute><Login /></PublicRoute>} />
             <Route path="/auth/register" element={<PublicRoute><Register /></PublicRoute>} />
@@ -81,7 +83,8 @@ export default function App() {
             {/* Protected Routes */}
             <Route path="/*" element={<ProtectedRoute><Dashboard /></ProtectedRoute>} />
           </Routes>
-        </AuthProvider>
+          </AuthProvider>
+        </LanguageProvider>
       </ThemeProvider>
     </BrowserRouter>
   )
diff --git a/apps/web/src/components/LanguageToggle.tsx b/apps/web/src/components/LanguageToggle.tsx
new file mode 100644
index 0000000..7e06783
--- /dev/null
+++ b/apps/web/src/components/LanguageToggle.tsx
@@ -0,0 +1,24 @@
+import { useLanguage } from '@/contexts/LanguageContext'
+import { Button } from '@/components/ui/button'
+import { Languages } from 'lucide-react'
+
+export function LanguageToggle() {
+  const { language, setLanguage } = useLanguage()
+
+  const toggleLanguage = () => {
+    setLanguage(language === 'id' ? 'en' : 'id')
+  }
+
+  return (
+    <Button
+      variant="ghost"
+      size="sm"
+      onClick={toggleLanguage}
+      className="gap-2"
+      title={language === 'id' ? 'Switch to English' : 'Ganti ke Bahasa Indonesia'}
+    >
+      <Languages className="h-4 w-4" />
+      <span className="text-xs font-medium">{language === 'id' ? 'ID' : 'EN'}</span>
+    </Button>
+  )
+}
diff --git a/apps/web/src/components/dialogs/TransactionDialog.tsx b/apps/web/src/components/dialogs/TransactionDialog.tsx
index 095b050..ea7364f 100644
--- a/apps/web/src/components/dialogs/TransactionDialog.tsx
+++ b/apps/web/src/components/dialogs/TransactionDialog.tsx
@@ -1,5 +1,6 @@
 import { useState, useEffect } from "react"
 import { toast } from "sonner"
+import { useLanguage } from "@/contexts/LanguageContext"
 import { Button } from "@/components/ui/button"
 import {
   Dialog,
@@ -45,17 +46,19 @@ interface TransactionDialogProps {
   open: boolean
   onOpenChange: (open: boolean) => void
   transaction?: Transaction | null
+  walletId?: string | null
   onSuccess: () => void
 }
 
 const API = "/api"
 
-export function TransactionDialog({ open, onOpenChange, transaction, onSuccess }: TransactionDialogProps) {
+export function TransactionDialog({ open, onOpenChange, transaction, walletId: initialWalletId, onSuccess }: TransactionDialogProps) {
+  const { t } = useLanguage()
   const [wallets, setWallets] = useState<Wallet[]>([])
   const [categoryOptions, setCategoryOptions] = useState<Option[]>([])
   const [loading, setLoading] = useState(false)
   const [amount, setAmount] = useState(transaction?.amount?.toString() || "")
-  const [walletId, setWalletId] = useState(transaction?.walletId || "")
+  const [walletId, setWalletId] = useState(transaction?.walletId || initialWalletId || "")
   const [direction, setDirection] = useState<"in" | "out">(transaction?.direction || "out")
   const [categories, setCategories] = useState<string[]>(
     transaction?.category ? transaction.category.split(',').map(c => c.trim()) : []
@@ -222,18 +225,18 @@ export function TransactionDialog({ open, onOpenChange, transaction, onSuccess }
     <Dialog open={open} onOpenChange={handleOpenChange}>
       <DialogContent className="sm:max-w-[425px]">
         <DialogHeader>
-          <DialogTitle>{isEditing ? "Edit Transaction" : "Add New Transaction"}</DialogTitle>
+          <DialogTitle>{isEditing ? t.transactionDialog.editTitle : t.transactionDialog.addTitle}</DialogTitle>
           <DialogDescription>
-            {isEditing ? "Update your transaction details." : "Record a new transaction."}
+            {isEditing ? t.transactionDialog.editTitle : t.transactionDialog.addTitle}
           </DialogDescription>
         </DialogHeader>
         <form onSubmit={handleSubmit}>
           <div className="grid gap-4 py-4">
             <div className="grid gap-2">
-              <Label htmlFor="wallet">Wallet</Label>
+              <Label htmlFor="wallet">{t.transactionDialog.wallet}</Label>
               <Select value={walletId} onValueChange={setWalletId}>
                 <SelectTrigger>
-                  <SelectValue placeholder="Select a wallet" />
+                  <SelectValue placeholder={t.transactionDialog.selectWallet} />
                 </SelectTrigger>
                 <SelectContent>
                   {wallets.map(wallet => (
@@ -247,58 +250,58 @@ export function TransactionDialog({ open, onOpenChange, transaction, onSuccess }
 
             <div className="grid grid-cols-2 gap-4">
               <div className="grid gap-2">
-                <Label htmlFor="amount">Amount</Label>
+                <Label htmlFor="amount">{t.transactionDialog.amount}</Label>
                 <Input
                   id="amount"
                   type="number"
                   step="0.01"
                   value={amount}
                   onChange={(e) => setAmount(e.target.value)}
-                  placeholder="0.00"
+                  placeholder={t.transactionDialog.amountPlaceholder}
                   required
                 />
               </div>
               
               <div className="grid gap-2">
-                <Label htmlFor="direction">Type</Label>
+                <Label htmlFor="direction">{t.transactionDialog.direction}</Label>
                 <Select value={direction} onValueChange={(value: "in" | "out") => setDirection(value)}>
                   <SelectTrigger>
                     <SelectValue />
                   </SelectTrigger>
                   <SelectContent>
-                    <SelectItem value="in">Income</SelectItem>
-                    <SelectItem value="out">Expense</SelectItem>
+                    <SelectItem value="in">{t.transactionDialog.income}</SelectItem>
+                    <SelectItem value="out">{t.transactionDialog.expense}</SelectItem>
                   </SelectContent>
                 </Select>
               </div>
             </div>
 
             <div className="grid gap-2">
-              <Label htmlFor="date">Date</Label>
+              <Label htmlFor="date">{t.transactionDialog.date}</Label>
               <DatePicker
                 date={selectedDate}
                 onDateChange={(date) => date && setSelectedDate(date)}
-                placeholder="Select date"
+                placeholder={t.transactionDialog.selectDate}
               />
             </div>
 
             <div className="grid gap-2">
-              <Label htmlFor="category">Categories</Label>
+              <Label htmlFor="category">{t.transactionDialog.category}</Label>
               <MultipleSelector
                 options={categoryOptions}
                 selected={categories}
                 onChange={setCategories}
-                placeholder="Select or create categories..."
+                placeholder={t.transactionDialog.categoryPlaceholder}
               />
             </div>
 
             <div className="grid gap-2">
-              <Label htmlFor="memo">Memo</Label>
+              <Label htmlFor="memo">{t.transactionDialog.memo}</Label>
               <Input
                 id="memo"
                 value={memo}
                 onChange={(e) => setMemo(e.target.value)}
-                placeholder="Optional description"
+                placeholder={t.transactionDialog.memoPlaceholder}
               />
             </div>
 
@@ -310,10 +313,10 @@ export function TransactionDialog({ open, onOpenChange, transaction, onSuccess }
           </div>
           <DialogFooter>
             <Button type="button" variant="outline" onClick={() => handleOpenChange(false)}>
-              Cancel
+              {t.common.cancel}
             </Button>
             <Button type="submit" disabled={loading}>
-              {loading ? "Saving..." : isEditing ? "Update" : "Create"}
+              {loading ? t.common.loading : isEditing ? t.common.save : t.common.add}
             </Button>
           </DialogFooter>
         </form>
diff --git a/apps/web/src/components/dialogs/WalletDialog.tsx b/apps/web/src/components/dialogs/WalletDialog.tsx
index f237f83..98f4505 100644
--- a/apps/web/src/components/dialogs/WalletDialog.tsx
+++ b/apps/web/src/components/dialogs/WalletDialog.tsx
@@ -1,5 +1,6 @@
 import { useState, useEffect } from "react"
 import { toast } from "sonner"
+import { useLanguage } from "@/contexts/LanguageContext"
 import { Button } from "@/components/ui/button"
 import {
   Dialog,
@@ -56,6 +57,7 @@ interface WalletDialogProps {
 const API = "/api"
 
 export function WalletDialog({ open, onOpenChange, wallet, onSuccess }: WalletDialogProps) {
+  const { t } = useLanguage()
   const [name, setName] = useState(wallet?.name || "")
   const [kind, setKind] = useState<"money" | "asset">(wallet?.kind || "money")
   const [currency, setCurrency] = useState(wallet?.currency || "IDR")
@@ -71,7 +73,7 @@ export function WalletDialog({ open, onOpenChange, wallet, onSuccess }: WalletDi
   const handleSubmit = async (e: React.FormEvent) => {
     e.preventDefault()
     if (!name.trim()) {
-      setError("Name is required")
+      setError(t.walletDialog.name + " is required")
       return
     }
 
@@ -141,40 +143,40 @@ export function WalletDialog({ open, onOpenChange, wallet, onSuccess }: WalletDi
     <Dialog open={open} onOpenChange={handleOpenChange}>
       <DialogContent className="sm:max-w-[425px]">
         <DialogHeader>
-          <DialogTitle>{isEditing ? "Edit Wallet" : "Add New Wallet"}</DialogTitle>
+          <DialogTitle>{isEditing ? t.walletDialog.editTitle : t.walletDialog.addTitle}</DialogTitle>
           <DialogDescription>
-            {isEditing ? "Update your wallet details." : "Create a new wallet to track your finances."}
+            {isEditing ? t.walletDialog.editTitle : t.walletDialog.addTitle}
           </DialogDescription>
         </DialogHeader>
         <form onSubmit={handleSubmit}>
           <div className="grid gap-4 py-4">
             <div className="grid gap-2">
-              <Label htmlFor="name">Name</Label>
+              <Label htmlFor="name">{t.walletDialog.name}</Label>
               <Input
                 id="name"
                 value={name}
                 onChange={(e) => setName(e.target.value)}
-                placeholder="e.g., My Bank Account"
+                placeholder={t.walletDialog.namePlaceholder}
                 required
               />
             </div>
             
             <div className="grid gap-2">
-              <Label htmlFor="kind">Type</Label>
+              <Label htmlFor="kind">{t.walletDialog.type}</Label>
               <Select value={kind} onValueChange={(value: "money" | "asset") => setKind(value)}>
                 <SelectTrigger>
                   <SelectValue />
                 </SelectTrigger>
                 <SelectContent>
-                  <SelectItem value="money">Money</SelectItem>
-                  <SelectItem value="asset">Asset</SelectItem>
+                  <SelectItem value="money">{t.walletDialog.money}</SelectItem>
+                  <SelectItem value="asset">{t.walletDialog.asset}</SelectItem>
                 </SelectContent>
               </Select>
             </div>
 
             {kind === "money" ? (
               <div className="grid gap-2">
-                <Label htmlFor="currency">Currency</Label>
+                <Label htmlFor="currency">{t.walletDialog.currency}</Label>
                 <Popover open={currencyOpen} onOpenChange={setCurrencyOpen}>
                   <PopoverTrigger asChild>
                     <Button
@@ -185,13 +187,13 @@ export function WalletDialog({ open, onOpenChange, wallet, onSuccess }: WalletDi
                     >
                       {currency
                         ? CURRENCIES.find((curr) => curr.code === currency)?.code + " - " + CURRENCIES.find((curr) => curr.code === currency)?.name
-                        : "Select currency..."}
+                        : t.walletDialog.selectCurrency}
                       <ChevronsUpDown className="ml-2 h-4 w-4 shrink-0 opacity-50" />
                     </Button>
                   </PopoverTrigger>
                   <PopoverContent className="w-full p-0">
                     <Command>
-                      <CommandInput placeholder="Search currency..." />
+                      <CommandInput placeholder={t.common.search + " currency..."} />
                       <CommandList>
                         <CommandEmpty>No currency found.</CommandEmpty>
                         <CommandGroup>
@@ -222,37 +224,37 @@ export function WalletDialog({ open, onOpenChange, wallet, onSuccess }: WalletDi
             ) : (
               <>
                 <div className="grid gap-2">
-                  <Label htmlFor="unit">Unit</Label>
+                  <Label htmlFor="unit">{t.walletDialog.unit}</Label>
                   <Input
                     id="unit"
                     value={unit}
                     onChange={(e) => setUnit(e.target.value)}
-                    placeholder="e.g., shares, kg, pieces"
+                    placeholder={t.walletDialog.unitPlaceholder}
                   />
                 </div>
                 <div className="grid gap-2">
-                  <Label htmlFor="pricePerUnit">Price per Unit (IDR)</Label>
+                  <Label htmlFor="pricePerUnit">{t.walletDialog.pricePerUnit}</Label>
                   <Input
                     id="pricePerUnit"
                     type="number"
                     step="0.01"
                     value={pricePerUnit}
                     onChange={(e) => setPricePerUnit(e.target.value)}
-                    placeholder="0.00"
+                    placeholder={t.walletDialog.pricePerUnitPlaceholder}
                   />
                 </div>
               </>
             )}
 
             <div className="grid gap-2">
-              <Label htmlFor="initialAmount">Initial Amount (Optional)</Label>
+              <Label htmlFor="initialAmount">{t.walletDialog.initialAmount}</Label>
               <Input
                 id="initialAmount"
                 type="number"
                 step="0.01"
                 value={initialAmount}
                 onChange={(e) => setInitialAmount(e.target.value)}
-                placeholder="0.00"
+                placeholder={t.walletDialog.initialAmountPlaceholder}
               />
             </div>
 
@@ -264,10 +266,10 @@ export function WalletDialog({ open, onOpenChange, wallet, onSuccess }: WalletDi
           </div>
           <DialogFooter>
             <Button type="button" variant="outline" onClick={() => handleOpenChange(false)}>
-              Cancel
+              {t.common.cancel}
             </Button>
             <Button type="submit" disabled={loading}>
-              {loading ? "Saving..." : isEditing ? "Update" : "Create"}
+              {loading ? t.common.loading : isEditing ? t.common.save : t.common.add}
             </Button>
           </DialogFooter>
         </form>
diff --git a/apps/web/src/components/layout/AppSidebar.tsx b/apps/web/src/components/layout/AppSidebar.tsx
index 66d1746..2f836c1 100644
--- a/apps/web/src/components/layout/AppSidebar.tsx
+++ b/apps/web/src/components/layout/AppSidebar.tsx
@@ -1,5 +1,6 @@
 import { Home, Wallet, Receipt, User, LogOut } from "lucide-react"
 import { Logo } from "../Logo"
+import { LanguageToggle } from "../LanguageToggle"
 import {
   Sidebar,
   SidebarContent,
@@ -13,31 +14,9 @@ import {
   useSidebar,
 } from "@/components/ui/sidebar"
 import { useAuth } from "@/contexts/AuthContext"
+import { useLanguage } from "@/contexts/LanguageContext"
 import { getAvatarUrl } from "@/lib/utils"
 
-const items = [
-  {
-    title: "Overview",
-    url: "/",
-    icon: Home,
-  },
-  {
-    title: "Wallets",
-    url: "/wallets",
-    icon: Wallet,
-  },
-  {
-    title: "Transactions",
-    url: "/transactions",
-    icon: Receipt,
-  },
-  {
-    title: "Profile",
-    url: "/profile",
-    icon: User,
-  },
-]
-
 interface AppSidebarProps {
   currentPage: string
   onNavigate: (page: string) => void
@@ -46,6 +25,30 @@ interface AppSidebarProps {
 export function AppSidebar({ currentPage, onNavigate }: AppSidebarProps) {
   const { user, logout } = useAuth()
   const { isMobile, setOpenMobile } = useSidebar()
+  const { t } = useLanguage()
+
+  const items = [
+    {
+      title: t.nav.overview,
+      url: "/",
+      icon: Home,
+    },
+    {
+      title: t.nav.wallets,
+      url: "/wallets",
+      icon: Wallet,
+    },
+    {
+      title: t.nav.transactions,
+      url: "/transactions",
+      icon: Receipt,
+    },
+    {
+      title: t.nav.profile,
+      url: "/profile",
+      icon: User,
+    },
+  ]
 
   return (
     <Sidebar>
@@ -109,13 +112,16 @@ export function AppSidebar({ currentPage, onNavigate }: AppSidebarProps) {
             </div>
           </div>
         </div>
-        <button
-          onClick={logout}
-          className="w-full mt-3 flex items-center justify-center px-4 py-2 text-sm font-medium text-destructive bg-destructive/10 rounded-lg hover:bg-destructive/20 transition-colors cursor-pointer"
-        >
-          <LogOut className="h-4 w-4 mr-2" />
-          Logout
-        </button>
+        <div className="flex gap-2 mt-3">
+          <LanguageToggle />
+          <button
+            onClick={logout}
+            className="flex-1 flex items-center justify-center px-4 py-2 text-sm font-medium text-destructive bg-destructive/10 rounded-lg hover:bg-destructive/20 transition-colors cursor-pointer"
+          >
+            <LogOut className="h-4 w-4 mr-2" />
+            {t.nav.logout}
+          </button>
+        </div>
       </SidebarFooter>
     </Sidebar>
   )
diff --git a/apps/web/src/contexts/LanguageContext.tsx b/apps/web/src/contexts/LanguageContext.tsx
new file mode 100644
index 0000000..73b673f
--- /dev/null
+++ b/apps/web/src/contexts/LanguageContext.tsx
@@ -0,0 +1,58 @@
+import { createContext, useContext, useState, useEffect } from 'react'
+import type { ReactNode } from 'react'
+import { id } from '@/locales/id'
+import { en } from '@/locales/en'
+
+type Language = 'id' | 'en'
+type Translations = typeof id
+
+interface LanguageContextType {
+  language: Language
+  setLanguage: (lang: Language) => void
+  t: Translations
+}
+
+const LanguageContext = createContext<LanguageContextType | undefined>(undefined)
+
+export function LanguageProvider({ children }: { children: ReactNode }) {
+  const [language, setLanguageState] = useState<Language>(() => {
+    const stored = localStorage.getItem('language')
+    return (stored === 'en' || stored === 'id') ? stored : 'id' // Default to Indonesian
+  })
+
+  const translations: Record<Language, Translations> = {
+    id,
+    en,
+  }
+
+  const setLanguage = (lang: Language) => {
+    setLanguageState(lang)
+    localStorage.setItem('language', lang)
+  }
+
+  useEffect(() => {
+    // Save to localStorage whenever language changes
+    localStorage.setItem('language', language)
+  }, [language])
+
+  const value: LanguageContextType = {
+    language,
+    setLanguage,
+    t: translations[language],
+  }
+
+  return (
+    <LanguageContext.Provider value={value}>
+      {children}
+    </LanguageContext.Provider>
+  )
+}
+
+// eslint-disable-next-line react-refresh/only-export-components
+export function useLanguage() {
+  const context = useContext(LanguageContext)
+  if (context === undefined) {
+    throw new Error('useLanguage must be used within a LanguageProvider')
+  }
+  return context
+}
diff --git a/apps/web/src/locales/en.ts b/apps/web/src/locales/en.ts
new file mode 100644
index 0000000..e072969
--- /dev/null
+++ b/apps/web/src/locales/en.ts
@@ -0,0 +1,210 @@
+export const en = {
+  common: {
+    search: 'Search',
+    filter: 'Filter',
+    add: 'Add',
+    edit: 'Edit',
+    delete: 'Delete',
+    cancel: 'Cancel',
+    save: 'Save',
+    close: 'Close',
+    loading: 'Loading...',
+    noData: 'No data',
+    confirm: 'Confirm',
+    success: 'Success',
+    error: 'Error',
+    total: 'Total',
+    date: 'Date',
+    amount: 'Amount',
+    status: 'Status',
+    actions: 'Actions',
+    all: 'All',
+    active: 'Active',
+    inactive: 'Inactive',
+    yes: 'Yes',
+    no: 'No',
+  },
+  
+  nav: {
+    overview: 'Overview',
+    transactions: 'Transactions',
+    wallets: 'Wallets',
+    profile: 'Profile',
+    logout: 'Logout',
+  },
+  
+  overview: {
+    title: 'Overview',
+    totalBalance: 'Total Balance',
+    totalIncome: 'Total Income',
+    totalExpense: 'Total Expense',
+    acrossWallets: 'Across {count} wallets',
+    income: 'income',
+    expense: 'expense',
+    recentTransactions: 'Recent Transactions',
+    viewAll: 'View All',
+    noTransactions: 'No transactions yet',
+    addFirstTransaction: 'Add your first transaction',
+    wallets: 'Wallets',
+    addWallet: 'Add Wallet',
+    noWallets: 'No wallets yet',
+    createFirstWallet: 'Create your first wallet',
+    incomeByCategory: 'Income by Category',
+    expenseByCategory: 'Expense by Category',
+    last30Days: 'Last 30 days',
+    last7Days: 'Last 7 days',
+    thisMonth: 'This month',
+    lastMonth: 'Last month',
+    thisYear: 'This year',
+    custom: 'Custom',
+  },
+  
+  transactions: {
+    title: 'Transactions',
+    addTransaction: 'Add Transaction',
+    editTransaction: 'Edit Transaction',
+    deleteConfirm: 'Are you sure you want to delete this transaction?',
+    income: 'Income',
+    expense: 'Expense',
+    category: 'Category',
+    memo: 'Memo',
+    wallet: 'Wallet',
+    direction: 'Type',
+    filterByWallet: 'Filter by Wallet',
+    filterByDirection: 'Filter by Type',
+    filterByCategory: 'Filter by Category',
+    searchPlaceholder: 'Search transactions...',
+    noTransactions: 'No transactions',
+    stats: {
+      totalIncome: 'Total Income',
+      totalExpense: 'Total Expense',
+      netAmount: 'Net Amount',
+    },
+  },
+  
+  wallets: {
+    title: 'Wallets',
+    addWallet: 'Add Wallet',
+    editWallet: 'Edit Wallet',
+    deleteConfirm: 'Are you sure you want to delete this wallet? All related transactions will be deleted.',
+    name: 'Name',
+    type: 'Type',
+    balance: 'Balance',
+    currency: 'Currency',
+    unit: 'Unit',
+    initialAmount: 'Initial Amount',
+    pricePerUnit: 'Price per Unit',
+    money: 'Money',
+    asset: 'Asset',
+    filterByType: 'Filter by Type',
+    searchPlaceholder: 'Search wallets...',
+    noWallets: 'No wallets yet',
+    createFirst: 'Create your first wallet to start tracking your finances',
+    totalBalance: 'Total Balance',
+    moneyWallets: 'Money Wallets',
+    assetWallets: 'Asset Wallets',
+  },
+  
+  walletDialog: {
+    addTitle: 'Add Wallet',
+    editTitle: 'Edit Wallet',
+    name: 'Wallet Name',
+    namePlaceholder: 'e.g., Main Wallet, Savings',
+    type: 'Wallet Type',
+    money: 'Money',
+    asset: 'Asset',
+    currency: 'Currency',
+    selectCurrency: 'Select currency',
+    unit: 'Unit',
+    unitPlaceholder: 'e.g., grams, lots, shares',
+    initialAmount: 'Initial Amount (Optional)',
+    initialAmountPlaceholder: '0',
+    pricePerUnit: 'Price per Unit (Optional)',
+    pricePerUnitPlaceholder: '0',
+    pricePerUnitHelper: 'Price per {unit} in IDR',
+  },
+  
+  transactionDialog: {
+    addTitle: 'Add Transaction',
+    editTitle: 'Edit Transaction',
+    amount: 'Amount',
+    amountPlaceholder: '0',
+    wallet: 'Wallet',
+    selectWallet: 'Select wallet',
+    direction: 'Transaction Type',
+    income: 'Income',
+    expense: 'Expense',
+    category: 'Category',
+    categoryPlaceholder: 'Select or type new category',
+    addCategory: 'Add',
+    memo: 'Memo (Optional)',
+    memoPlaceholder: 'Add a note...',
+    date: 'Date',
+    selectDate: 'Select date',
+  },
+  
+  profile: {
+    title: 'Profile',
+    personalInfo: 'Personal Information',
+    name: 'Name',
+    email: 'Email',
+    emailVerified: 'Email Verified',
+    emailNotVerified: 'Email Not Verified',
+    avatar: 'Avatar',
+    changeAvatar: 'Change Avatar',
+    uploading: 'Uploading...',
+    
+    security: 'Security',
+    password: 'Password',
+    currentPassword: 'Current Password',
+    newPassword: 'New Password',
+    confirmPassword: 'Confirm New Password',
+    changePassword: 'Change Password',
+    setPassword: 'Set Password',
+    noPassword: 'You logged in with Google and haven\'t set a password yet',
+    
+    twoFactor: 'Two-Factor Authentication',
+    twoFactorDesc: 'Add an extra layer of security to your account',
+    phoneNumber: 'Phone Number',
+    phoneNumberPlaceholder: '+62812345678',
+    updatePhone: 'Update Phone',
+    
+    emailOtp: 'Email OTP',
+    emailOtpDesc: 'Receive verification codes via email',
+    enable: 'Enable',
+    disable: 'Disable',
+    enabled: 'Enabled',
+    disabled: 'Disabled',
+    sendCode: 'Send Code',
+    verifyCode: 'Verify Code',
+    enterCode: 'Enter code',
+    
+    whatsappOtp: 'WhatsApp OTP',
+    whatsappOtpDesc: 'Receive verification codes via WhatsApp',
+    
+    authenticatorApp: 'Authenticator App',
+    authenticatorDesc: 'Use an authenticator app like Google Authenticator',
+    setup: 'Setup',
+    scanQr: 'Scan QR Code',
+    scanQrDesc: 'Scan this QR code with your authenticator app',
+    manualEntry: 'Or enter this code manually:',
+    enterAuthCode: 'Enter code from your authenticator app',
+    
+    dangerZone: 'Danger Zone',
+    deleteAccount: 'Delete Account',
+    deleteAccountDesc: 'Permanently delete your account. This action cannot be undone.',
+    deleteAccountConfirm: 'Are you sure you want to delete your account? All data will be permanently lost.',
+    enterPasswordToDelete: 'Enter your password to confirm',
+  },
+  
+  dateRange: {
+    last7Days: 'Last 7 days',
+    last30Days: 'Last 30 days',
+    thisMonth: 'This month',
+    lastMonth: 'Last month',
+    thisYear: 'This year',
+    custom: 'Custom',
+    from: 'From',
+    to: 'To',
+  },
+}
diff --git a/apps/web/src/locales/id.ts b/apps/web/src/locales/id.ts
new file mode 100644
index 0000000..1e63aed
--- /dev/null
+++ b/apps/web/src/locales/id.ts
@@ -0,0 +1,210 @@
+export const id = {
+  common: {
+    search: 'Cari',
+    filter: 'Filter',
+    add: 'Tambah',
+    edit: 'Edit',
+    delete: 'Hapus',
+    cancel: 'Batal',
+    save: 'Simpan',
+    close: 'Tutup',
+    loading: 'Memuat...',
+    noData: 'Tidak ada data',
+    confirm: 'Konfirmasi',
+    success: 'Berhasil',
+    error: 'Gagal',
+    total: 'Total',
+    date: 'Tanggal',
+    amount: 'Jumlah',
+    status: 'Status',
+    actions: 'Aksi',
+    all: 'Semua',
+    active: 'Aktif',
+    inactive: 'Tidak Aktif',
+    yes: 'Ya',
+    no: 'Tidak',
+  },
+  
+  nav: {
+    overview: 'Ringkasan',
+    transactions: 'Transaksi',
+    wallets: 'Dompet',
+    profile: 'Profil',
+    logout: 'Keluar',
+  },
+  
+  overview: {
+    title: 'Ringkasan',
+    totalBalance: 'Total Saldo',
+    totalIncome: 'Total Pemasukan',
+    totalExpense: 'Total Pengeluaran',
+    acrossWallets: 'Dari {count} dompet',
+    income: 'pemasukan',
+    expense: 'pengeluaran',
+    recentTransactions: 'Transaksi Terkini',
+    viewAll: 'Lihat Semua',
+    noTransactions: 'Belum ada transaksi',
+    addFirstTransaction: 'Tambahkan transaksi pertama Anda',
+    wallets: 'Dompet',
+    addWallet: 'Tambah Dompet',
+    noWallets: 'Belum ada dompet',
+    createFirstWallet: 'Buat dompet pertama Anda',
+    incomeByCategory: 'Pemasukan per Kategori',
+    expenseByCategory: 'Pengeluaran per Kategori',
+    last30Days: '30 hari terakhir',
+    last7Days: '7 hari terakhir',
+    thisMonth: 'Bulan ini',
+    lastMonth: 'Bulan lalu',
+    thisYear: 'Tahun ini',
+    custom: 'Kustom',
+  },
+  
+  transactions: {
+    title: 'Transaksi',
+    addTransaction: 'Tambah Transaksi',
+    editTransaction: 'Edit Transaksi',
+    deleteConfirm: 'Apakah Anda yakin ingin menghapus transaksi ini?',
+    income: 'Pemasukan',
+    expense: 'Pengeluaran',
+    category: 'Kategori',
+    memo: 'Catatan',
+    wallet: 'Dompet',
+    direction: 'Tipe',
+    filterByWallet: 'Filter berdasarkan Dompet',
+    filterByDirection: 'Filter berdasarkan Tipe',
+    filterByCategory: 'Filter berdasarkan Kategori',
+    searchPlaceholder: 'Cari transaksi...',
+    noTransactions: 'Tidak ada transaksi',
+    stats: {
+      totalIncome: 'Total Pemasukan',
+      totalExpense: 'Total Pengeluaran',
+      netAmount: 'Saldo Bersih',
+    },
+  },
+  
+  wallets: {
+    title: 'Dompet',
+    addWallet: 'Tambah Dompet',
+    editWallet: 'Edit Dompet',
+    deleteConfirm: 'Apakah Anda yakin ingin menghapus dompet ini? Semua transaksi terkait akan ikut terhapus.',
+    name: 'Nama',
+    type: 'Tipe',
+    balance: 'Saldo',
+    currency: 'Mata Uang',
+    unit: 'Satuan',
+    initialAmount: 'Jumlah Awal',
+    pricePerUnit: 'Harga per Satuan',
+    money: 'Uang',
+    asset: 'Aset',
+    filterByType: 'Filter berdasarkan Tipe',
+    searchPlaceholder: 'Cari dompet...',
+    noWallets: 'Belum ada dompet',
+    createFirst: 'Buat dompet pertama Anda untuk mulai melacak keuangan',
+    totalBalance: 'Total Saldo',
+    moneyWallets: 'Dompet Uang',
+    assetWallets: 'Dompet Aset',
+  },
+  
+  walletDialog: {
+    addTitle: 'Tambah Dompet',
+    editTitle: 'Edit Dompet',
+    name: 'Nama Dompet',
+    namePlaceholder: 'Contoh: Dompet Utama, Tabungan',
+    type: 'Tipe Dompet',
+    money: 'Uang',
+    asset: 'Aset',
+    currency: 'Mata Uang',
+    selectCurrency: 'Pilih mata uang',
+    unit: 'Satuan',
+    unitPlaceholder: 'Contoh: gram, lot, lembar',
+    initialAmount: 'Jumlah Awal (Opsional)',
+    initialAmountPlaceholder: '0',
+    pricePerUnit: 'Harga per Satuan (Opsional)',
+    pricePerUnitPlaceholder: '0',
+    pricePerUnitHelper: 'Harga per {unit} dalam IDR',
+  },
+  
+  transactionDialog: {
+    addTitle: 'Tambah Transaksi',
+    editTitle: 'Edit Transaksi',
+    amount: 'Jumlah',
+    amountPlaceholder: '0',
+    wallet: 'Dompet',
+    selectWallet: 'Pilih dompet',
+    direction: 'Tipe Transaksi',
+    income: 'Pemasukan',
+    expense: 'Pengeluaran',
+    category: 'Kategori',
+    categoryPlaceholder: 'Pilih atau ketik kategori baru',
+    addCategory: 'Tambah',
+    memo: 'Catatan (Opsional)',
+    memoPlaceholder: 'Tambahkan catatan...',
+    date: 'Tanggal',
+    selectDate: 'Pilih tanggal',
+  },
+  
+  profile: {
+    title: 'Profil',
+    personalInfo: 'Informasi Pribadi',
+    name: 'Nama',
+    email: 'Email',
+    emailVerified: 'Email Terverifikasi',
+    emailNotVerified: 'Email Belum Terverifikasi',
+    avatar: 'Avatar',
+    changeAvatar: 'Ubah Avatar',
+    uploading: 'Mengunggah...',
+    
+    security: 'Keamanan',
+    password: 'Password',
+    currentPassword: 'Password Saat Ini',
+    newPassword: 'Password Baru',
+    confirmPassword: 'Konfirmasi Password Baru',
+    changePassword: 'Ubah Password',
+    setPassword: 'Atur Password',
+    noPassword: 'Anda login dengan Google dan belum mengatur password',
+    
+    twoFactor: 'Autentikasi Dua Faktor',
+    twoFactorDesc: 'Tambahkan lapisan keamanan ekstra ke akun Anda',
+    phoneNumber: 'Nomor Telepon',
+    phoneNumberPlaceholder: '+62812345678',
+    updatePhone: 'Update Nomor',
+    
+    emailOtp: 'Email OTP',
+    emailOtpDesc: 'Terima kode verifikasi via email',
+    enable: 'Aktifkan',
+    disable: 'Nonaktifkan',
+    enabled: 'Aktif',
+    disabled: 'Tidak Aktif',
+    sendCode: 'Kirim Kode',
+    verifyCode: 'Verifikasi Kode',
+    enterCode: 'Masukkan kode',
+    
+    whatsappOtp: 'WhatsApp OTP',
+    whatsappOtpDesc: 'Terima kode verifikasi via WhatsApp',
+    
+    authenticatorApp: 'Authenticator App',
+    authenticatorDesc: 'Gunakan aplikasi authenticator seperti Google Authenticator',
+    setup: 'Setup',
+    scanQr: 'Scan QR Code',
+    scanQrDesc: 'Scan QR code ini dengan aplikasi authenticator Anda',
+    manualEntry: 'Atau masukkan kode ini secara manual:',
+    enterAuthCode: 'Masukkan kode dari aplikator authenticator',
+    
+    dangerZone: 'Zona Berbahaya',
+    deleteAccount: 'Hapus Akun',
+    deleteAccountDesc: 'Hapus akun Anda secara permanen. Tindakan ini tidak dapat dibatalkan.',
+    deleteAccountConfirm: 'Apakah Anda yakin ingin menghapus akun Anda? Semua data akan hilang permanen.',
+    enterPasswordToDelete: 'Masukkan password Anda untuk konfirmasi',
+  },
+  
+  dateRange: {
+    last7Days: '7 hari terakhir',
+    last30Days: '30 hari terakhir',
+    thisMonth: 'Bulan ini',
+    lastMonth: 'Bulan lalu',
+    thisYear: 'Tahun ini',
+    custom: 'Kustom',
+    from: 'Dari',
+    to: 'Sampai',
+  },
+}
diff --git a/apps/web/tsconfig.app.tsbuildinfo b/apps/web/tsconfig.app.tsbuildinfo
index 50f71ae..21cbeb9 100644
--- a/apps/web/tsconfig.app.tsbuildinfo
+++ b/apps/web/tsconfig.app.tsbuildinfo
@@ -1 +1 @@
-{"root":["./src/app.tsx","./src/main.tsx","./src/vite-env.d.ts","./src/components/breadcrumb.tsx","./src/components/dashboard.tsx","./src/components/logo.tsx","./src/components/themeprovider.tsx","./src/components/themetoggle.tsx","./src/components/admin/adminbreadcrumb.tsx","./src/components/admin/adminlayout.tsx","./src/components/admin/adminsidebar.tsx","./src/components/admin/pages/admindashboard.tsx","./src/components/admin/pages/adminpaymentmethods.tsx","./src/components/admin/pages/adminpayments.tsx","./src/components/admin/pages/adminplans.tsx","./src/components/admin/pages/adminsettings.tsx","./src/components/admin/pages/adminusers.tsx","./src/components/dialogs/transactiondialog.tsx","./src/components/dialogs/walletdialog.tsx","./src/components/layout/appsidebar.tsx","./src/components/layout/authlayout.tsx","./src/components/layout/dashboardlayout.tsx","./src/components/pages/authcallback.tsx","./src/components/pages/login.tsx","./src/components/pages/otpverification.tsx","./src/components/pages/overview.tsx","./src/components/pages/profile.tsx","./src/components/pages/register.tsx","./src/components/pages/transactions.tsx","./src/components/pages/wallets.tsx","./src/components/test/calendartest.tsx","./src/components/ui/alert-dialog.tsx","./src/components/ui/alert.tsx","./src/components/ui/badge.tsx","./src/components/ui/button.tsx","./src/components/ui/calendar.tsx","./src/components/ui/card.tsx","./src/components/ui/chart.tsx","./src/components/ui/checkbox.tsx","./src/components/ui/command.tsx","./src/components/ui/date-picker.tsx","./src/components/ui/dialog.tsx","./src/components/ui/dropdown-menu.tsx","./src/components/ui/form.tsx","./src/components/ui/input.tsx","./src/components/ui/label.tsx","./src/components/ui/multi-select.tsx","./src/components/ui/multiselector.tsx","./src/components/ui/popover.tsx","./src/components/ui/select.tsx","./src/components/ui/separator.tsx","./src/components/ui/sheet.tsx","./src/components/ui/sidebar.tsx","./src/components/ui/skeleton.tsx","./src/components/ui/sonner.tsx","./src/components/ui/switch.tsx","./src/components/ui/table.tsx","./src/components/ui/tabs.tsx","./src/components/ui/textarea.tsx","./src/components/ui/tooltip.tsx","./src/constants/currencies.ts","./src/contexts/authcontext.tsx","./src/hooks/use-mobile.ts","./src/hooks/usetheme.ts","./src/lib/utils.ts","./src/utils/exchangerate.ts","./src/utils/numberformat.ts"],"version":"5.9.2"}
\ No newline at end of file
+{"root":["./src/app.tsx","./src/main.tsx","./src/vite-env.d.ts","./src/components/breadcrumb.tsx","./src/components/dashboard.tsx","./src/components/languagetoggle.tsx","./src/components/logo.tsx","./src/components/themeprovider.tsx","./src/components/themetoggle.tsx","./src/components/admin/adminbreadcrumb.tsx","./src/components/admin/adminlayout.tsx","./src/components/admin/adminsidebar.tsx","./src/components/admin/pages/admindashboard.tsx","./src/components/admin/pages/adminpaymentmethods.tsx","./src/components/admin/pages/adminpayments.tsx","./src/components/admin/pages/adminplans.tsx","./src/components/admin/pages/adminsettings.tsx","./src/components/admin/pages/adminusers.tsx","./src/components/dialogs/transactiondialog.tsx","./src/components/dialogs/walletdialog.tsx","./src/components/layout/appsidebar.tsx","./src/components/layout/authlayout.tsx","./src/components/layout/dashboardlayout.tsx","./src/components/pages/authcallback.tsx","./src/components/pages/login.tsx","./src/components/pages/otpverification.tsx","./src/components/pages/overview.tsx","./src/components/pages/profile.tsx","./src/components/pages/register.tsx","./src/components/pages/transactions.tsx","./src/components/pages/wallets.tsx","./src/components/test/calendartest.tsx","./src/components/ui/alert-dialog.tsx","./src/components/ui/alert.tsx","./src/components/ui/badge.tsx","./src/components/ui/button.tsx","./src/components/ui/calendar.tsx","./src/components/ui/card.tsx","./src/components/ui/chart.tsx","./src/components/ui/checkbox.tsx","./src/components/ui/command.tsx","./src/components/ui/date-picker.tsx","./src/components/ui/dialog.tsx","./src/components/ui/dropdown-menu.tsx","./src/components/ui/form.tsx","./src/components/ui/input.tsx","./src/components/ui/label.tsx","./src/components/ui/multi-select.tsx","./src/components/ui/multiselector.tsx","./src/components/ui/popover.tsx","./src/components/ui/select.tsx","./src/components/ui/separator.tsx","./src/components/ui/sheet.tsx","./src/components/ui/sidebar.tsx","./src/components/ui/skeleton.tsx","./src/components/ui/sonner.tsx","./src/components/ui/switch.tsx","./src/components/ui/table.tsx","./src/components/ui/tabs.tsx","./src/components/ui/textarea.tsx","./src/components/ui/tooltip.tsx","./src/constants/currencies.ts","./src/contexts/authcontext.tsx","./src/contexts/languagecontext.tsx","./src/hooks/use-mobile.ts","./src/hooks/usetheme.ts","./src/lib/utils.ts","./src/locales/en.ts","./src/locales/id.ts","./src/utils/exchangerate.ts","./src/utils/numberformat.ts"],"version":"5.9.2"}
\ No newline at end of file