diff --git a/components/dashboard/withdrawal/WithdrawalReview.tsx b/components/dashboard/withdrawal/WithdrawalReview.tsx
index 3c264a2..88db0d5 100644
--- a/components/dashboard/withdrawal/WithdrawalReview.tsx
+++ b/components/dashboard/withdrawal/WithdrawalReview.tsx
@@ -28,8 +28,8 @@ export function WithdrawalReview() {
         try {
             const response = await createWithdrawal({
                 currency,
-                amount,
-                walletAddress,
+                amount: parseFloat(amount),
+                destinationAddress: walletAddress,
             });
 
             setTransactionResult(response.transactionId, 'success');
diff --git a/lib/api/transactions.ts b/lib/api/transactions.ts
index 18e1963..9decb81 100644
--- a/lib/api/transactions.ts
+++ b/lib/api/transactions.ts
@@ -144,10 +144,16 @@ export async function getTransactionById(id: string): Promise<Transaction> {
 
 // ==================== Withdrawal ====================
 
+// Confirmed against backend src/transactions/dtos/transaction.dto.ts:
+// - field is `destinationAddress` (not `walletAddress`)
+// - `amount` must be a number, not a string
+// - `beneficiaryId` and `walletId` are optional alternative targeting fields
 export interface CreateWithdrawalDto {
     currency: string;
-    amount: string;
-    walletAddress: string;
+    amount: number;
+    destinationAddress?: string;
+    beneficiaryId?: string;
+    walletId?: string;
 }
 
 export interface WithdrawalResponse {