diff --git a/package.json b/package.json
index 952ef6d..41d0126 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@icpay/sdk",
-  "version": "1.3.40",
+  "version": "1.3.41",
   "description": "Official icpay SDK for Internet Computer payments",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
diff --git a/src/index.ts b/src/index.ts
index b397998..9d11273 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -486,14 +486,28 @@ export class Icpay {
       let paymentIntentCode: number | null = null;
       try {
         debugLog(this.config.debug || false, 'creating payment intent');
+
+        // Get the expected sender principal from connected wallet
+        const expectedSenderPrincipal = this.connectedWallet?.owner || this.connectedWallet?.principal?.toString();
+        if (!expectedSenderPrincipal) {
+          throw new IcpayError({
+            code: ICPAY_ERROR_CODES.WALLET_NOT_CONNECTED,
+            message: 'Wallet must be connected to create payment intent',
+            details: { connectedWallet: this.connectedWallet },
+            retryable: false,
+            userAction: 'Connect your wallet first'
+          });
+        }
+
         const intentResp = await this.publicApiClient.post('/sdk/public/payments/intents', {
           amount: request.amount,
           ledgerCanisterId,
+          expectedSenderPrincipal,
           metadata: request.metadata || {},
         });
         paymentIntentId = intentResp.data?.paymentIntent?.id || null;
         paymentIntentCode = intentResp.data?.paymentIntent?.intentCode ?? null;
-        debugLog(this.config.debug || false, 'payment intent created', { paymentIntentId, paymentIntentCode });
+        debugLog(this.config.debug || false, 'payment intent created', { paymentIntentId, paymentIntentCode, expectedSenderPrincipal });
       } catch (e) {
         // Do not proceed without a payment intent
         // Throw a standardized error so integrators can handle it consistently
@@ -1074,6 +1088,8 @@ export class Icpay {
           fee: tx.fee,
           decimals: tx.decimals,
           tokenPrice: tx.tokenPrice,
+          expectedSenderPrincipal: tx.expectedSenderPrincipal,
+          metadata: tx.metadata,
           createdAt: new Date(tx.createdAt),
           updatedAt: new Date(tx.updatedAt)
         })),
diff --git a/src/types/index.ts b/src/types/index.ts
index 7ee8677..d120f24 100644
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -215,6 +215,7 @@ export interface TransactionHistoryItem {
   fee?: string;
   decimals?: number;
   tokenPrice?: string;
+  expectedSenderPrincipal?: string;
   metadata?: any;
   createdAt: Date;
   updatedAt: Date;