diff --git a/packages/ramps-controller/CHANGELOG.md b/packages/ramps-controller/CHANGELOG.md
index 8b2de93250..8dee973bcb 100644
--- a/packages/ramps-controller/CHANGELOG.md
+++ b/packages/ramps-controller/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+
+- Fix Transak Native deposits failing on staging/UAT with a 400 `paymentMethod is required parameter` error by mapping canonical payment method IDs supplied without the `/payments/` prefix (e.g. `apple-pay`) to their deposit-format equivalents, in addition to the prefixed forms (e.g. `/payments/apple-pay`) ([#8980](https://github.com/MetaMask/core/pull/8980))
+
 ## [14.1.0]
 
 ### Added
diff --git a/packages/ramps-controller/src/TransakService.test.ts b/packages/ramps-controller/src/TransakService.test.ts
index f265023075..922641a37c 100644
--- a/packages/ramps-controller/src/TransakService.test.ts
+++ b/packages/ramps-controller/src/TransakService.test.ts
@@ -1172,6 +1172,28 @@ describe('TransakService', () => {
       expect(await promise).toStrictEqual(MOCK_TRANSLATION);
     });
 
+    it('normalizes canonical payment method IDs without the /payments/ prefix', async () => {
+      nock(STAGING_ORDERS_BASE)
+        .get(`${STAGING_PROVIDER_PATH}/native/translate`)
+        .query(
+          (query) =>
+            query.paymentMethod === 'apple_pay' &&
+            query.fiatCurrencyId === 'USD',
+        )
+        .reply(200, MOCK_TRANSLATION);
+
+      const { service } = getService();
+
+      const promise = service.getTranslation({
+        fiatCurrencyId: 'USD',
+        paymentMethod: 'apple-pay',
+      });
+      await jest.runAllTimersAsync();
+      await flushPromises();
+
+      expect(await promise).toStrictEqual(MOCK_TRANSLATION);
+    });
+
     it('passes through payment methods already in deposit format', async () => {
       nock(STAGING_ORDERS_BASE)
         .get(`${STAGING_PROVIDER_PATH}/native/translate`)
diff --git a/packages/ramps-controller/src/TransakService.ts b/packages/ramps-controller/src/TransakService.ts
index 22f2b22c56..a88e5b6c70 100644
--- a/packages/ramps-controller/src/TransakService.ts
+++ b/packages/ramps-controller/src/TransakService.ts
@@ -354,8 +354,10 @@ export type TransakServiceMessenger = Messenger<
  * (e.g., "credit_debit_card").
  *
  * The translation endpoint only understands the deposit-format IDs.
- * If no mapping exists, the input is returned as-is (it may already be
- * in the deposit format).
+ * Canonical IDs may arrive either with the "/payments/" prefix
+ * (e.g., "/payments/apple-pay") or without it (e.g., "apple-pay"), so both
+ * forms are accepted. If no mapping exists, the input is returned as-is (it
+ * may already be in the deposit format).
  */
 const RAMPS_TO_DEPOSIT_PAYMENT_METHOD: Record<string, string> = {
   '/payments/debit-credit-card': 'credit_debit_card',
@@ -366,13 +368,22 @@ const RAMPS_TO_DEPOSIT_PAYMENT_METHOD: Record<string, string> = {
   '/payments/gbp-bank-transfer': 'gbp_bank_transfer',
 };
 
+const PAYMENTS_PREFIX = '/payments/';
+
 function normalizePaymentMethodForTranslation(
   paymentMethod: string | undefined,
 ): string | undefined {
   if (!paymentMethod) {
     return undefined;
   }
-  return RAMPS_TO_DEPOSIT_PAYMENT_METHOD[paymentMethod] ?? paymentMethod;
+  const prefixed = paymentMethod.startsWith(PAYMENTS_PREFIX)
+    ? paymentMethod
+    : `${PAYMENTS_PREFIX}${paymentMethod}`;
+  return (
+    RAMPS_TO_DEPOSIT_PAYMENT_METHOD[paymentMethod] ??
+    RAMPS_TO_DEPOSIT_PAYMENT_METHOD[prefixed] ??
+    paymentMethod
+  );
 }
 
 function getTransakApiBaseUrl(environment: TransakEnvironment): string {