diff --git a/src/modules/expenses/components/AddExpense.vue b/src/modules/expenses/components/AddExpense.vue
index 48e0950..bcabb71 100644
--- a/src/modules/expenses/components/AddExpense.vue
+++ b/src/modules/expenses/components/AddExpense.vue
@@ -274,7 +274,7 @@ const form = useForm({
   initialValues: {
     description: '',
     amount: 0,
-    currency: 'EUR',
+    currency: '', // Will be set dynamically from LNbits default currency
     reference: '',
     isEquity: false
   }
@@ -284,14 +284,24 @@ const { resetForm, meta } = form
 const isFormValid = computed(() => meta.value.valid)
 
 /**
- * Fetch available currencies on component mount
+ * Fetch available currencies and default currency on component mount
  */
 onMounted(async () => {
   try {
     loadingCurrencies.value = true
+
+    // Fetch available currencies
     const currencies = await expensesAPI.getCurrencies()
     availableCurrencies.value = currencies
     console.log('[AddExpense] Loaded currencies:', currencies)
+
+    // Fetch default currency
+    const defaultCurrency = await expensesAPI.getDefaultCurrency()
+
+    // Set default currency: use configured default, or first available currency, or 'EUR' as final fallback
+    const initialCurrency = defaultCurrency || currencies[0] || 'EUR'
+    form.setFieldValue('currency', initialCurrency)
+    console.log('[AddExpense] Default currency set to:', initialCurrency)
   } catch (error) {
     console.error('[AddExpense] Failed to load currencies:', error)
     toast.error('Failed to load currencies', { description: 'Please check your connection and try again' })
diff --git a/src/modules/expenses/services/ExpensesAPI.ts b/src/modules/expenses/services/ExpensesAPI.ts
index 4342c43..08fcd6e 100644
--- a/src/modules/expenses/services/ExpensesAPI.ts
+++ b/src/modules/expenses/services/ExpensesAPI.ts
@@ -228,4 +228,26 @@ export class ExpensesAPI extends BaseService {
       throw error
     }
   }
+
+  /**
+   * Get default currency from LNbits instance
+   */
+  async getDefaultCurrency(): Promise<string | null> {
+    try {
+      const response = await fetch(`${this.baseUrl}/api/v1/default-currency`, {
+        method: 'GET',
+        signal: AbortSignal.timeout(this.config?.apiConfig?.timeout || 30000)
+      })
+
+      if (!response.ok) {
+        throw new Error(`Failed to fetch default currency: ${response.statusText}`)
+      }
+
+      const data = await response.json()
+      return data.default_currency
+    } catch (error) {
+      console.error('[ExpensesAPI] Error fetching default currency:', error)
+      throw error
+    }
+  }
 }