diff --git a/README.md b/README.md
index 1eccbb3..7ff7a6c 100644
--- a/README.md
+++ b/README.md
@@ -99,7 +99,14 @@ presentEntirePaymentFlow(session)
 | `payWithCardDetails(session, card, saveCard)` | Your own card UI (PCI-DSS required) |
 | `payWithConsent(session, consent)` | Charge a previously saved payment consent |
 
-Session `type` can be `'OneOff'`, `'Recurring'` (save a method without charging), or `'RecurringWithIntent'` (charge now and save). Optionally pass `{ layout: 'tab' | 'accordion' }` as the second argument to `presentEntirePaymentFlow`.
+Session `type` can be `'OneOff'`, `'Recurring'` (save a method without charging), or `'RecurringWithIntent'` (charge now and save). Optionally pass a configuration as the second argument to `presentEntirePaymentFlow`:
+
+```ts
+presentEntirePaymentFlow(session, {
+  layout: 'tab', // or 'accordion'
+  checkoutButton: { title: 'Pay HKD 50.00' }, // optional, defaults to "Pay" / "Confirm"
+});
+```
 
 A runnable integration lives in [`example/`](./example).
 
diff --git a/android/src/main/java/com/airwallexpaymentreactnative/util/PaymentSheetConfigurationConverter.kt b/android/src/main/java/com/airwallexpaymentreactnative/util/PaymentSheetConfigurationConverter.kt
index b89e628..aa62c7a 100644
--- a/android/src/main/java/com/airwallexpaymentreactnative/util/PaymentSheetConfigurationConverter.kt
+++ b/android/src/main/java/com/airwallexpaymentreactnative/util/PaymentSheetConfigurationConverter.kt
@@ -10,6 +10,9 @@ object PaymentSheetConfigurationConverter {
       "accordion" -> PaymentMethodsLayoutType.ACCORDION
       else -> PaymentMethodsLayoutType.TAB
     }
-    return PaymentElementConfiguration.PaymentSheet(layout = layout)
+    val checkoutButtonTitle = map?.getMapOrNull("checkoutButton")?.getStringOrNull("title")
+    val checkoutButton = checkoutButtonTitle?.let { PaymentElementConfiguration.CheckoutButton(it) }
+      ?: PaymentElementConfiguration.CheckoutButton()
+    return PaymentElementConfiguration.PaymentSheet(layout = layout, checkoutButton = checkoutButton)
   }
 }
diff --git a/example/src/App.tsx b/example/src/App.tsx
index df2f221..a8705a7 100644
--- a/example/src/App.tsx
+++ b/example/src/App.tsx
@@ -335,6 +335,23 @@ function Main() {
           PresentEntirePaymentFlow (accordion)
         </Text>
       </TouchableOpacity>
+      <TouchableOpacity
+        style={styles.button}
+        onPress={() => {
+          handlePaymentFlowPress((session) =>
+            presentEntirePaymentFlow(session, {
+              layout: 'tab',
+              checkoutButton: {
+                title: `Pay ${session.currency} ${session.amount.toFixed(2)}`,
+              },
+            })
+          );
+        }}
+      >
+        <Text style={styles.buttonText}>
+          PresentEntirePaymentFlow (custom button)
+        </Text>
+      </TouchableOpacity>
       <TouchableOpacity
         style={styles.button}
         onPress={() => {
diff --git a/ios/AWXUIContextConfiguration+Extensions.swift b/ios/AWXUIContextConfiguration+Extensions.swift
index a7bb345..15e9a4e 100644
--- a/ios/AWXUIContextConfiguration+Extensions.swift
+++ b/ios/AWXUIContextConfiguration+Extensions.swift
@@ -13,5 +13,9 @@ extension AWXUIContext.Configuration {
         } else {
             layout = .tab
         }
+        if let checkoutButton = params?["checkoutButton"] as? NSDictionary,
+           let title = checkoutButton["title"] as? String {
+            self.checkoutButton.title = title
+        }
     }
 }
diff --git a/src/__tests__/index.test.tsx b/src/__tests__/index.test.tsx
index ebf24e4..85fe822 100644
--- a/src/__tests__/index.test.tsx
+++ b/src/__tests__/index.test.tsx
@@ -1,4 +1,5 @@
 import type { OneOffSession } from '../types/PaymentSession';
+import type { PaymentSheetConfiguration } from '../types/PaymentSheetConfiguration';
 
 describe('PaymentSession', () => {
   it('includes lang when provided', () => {
@@ -15,3 +16,14 @@ describe('PaymentSession', () => {
     expect(session.lang).toBe('zh-Hans');
   });
 });
+
+describe('PaymentSheetConfiguration', () => {
+  it('accepts a custom checkout button title', () => {
+    const configuration: PaymentSheetConfiguration = {
+      layout: 'tab',
+      checkoutButton: { title: 'Pay HKD 50.00' },
+    };
+
+    expect(configuration.checkoutButton?.title).toBe('Pay HKD 50.00');
+  });
+});
diff --git a/src/types/PaymentSheetConfiguration.ts b/src/types/PaymentSheetConfiguration.ts
index 85ccfe2..97994ba 100644
--- a/src/types/PaymentSheetConfiguration.ts
+++ b/src/types/PaymentSheetConfiguration.ts
@@ -11,4 +11,17 @@ export type PaymentLayout = 'tab' | 'accordion';
  */
 export interface PaymentSheetConfiguration {
   layout: PaymentLayout;
+  /** Customizes the checkout button at the bottom of the payment sheet. */
+  checkoutButton?: CheckoutButtonConfiguration;
+}
+
+/**
+ * Checkout button options for the payment sheet.
+ */
+export interface CheckoutButtonConfiguration {
+  /**
+   * Custom button title, e.g. `'Pay HKD 50.00'`. When omitted, the SDK uses its default:
+   * "Pay" for one-off payments and "Confirm" for recurring ones.
+   */
+  title?: string;
 }