diff --git a/packages/checkout/src/hooks/useCheckoutUI/useCreditCardPayment.tsx b/packages/checkout/src/hooks/useCheckoutUI/useCreditCardPayment.tsx
index 2e40323ac..eacb68f62 100644
--- a/packages/checkout/src/hooks/useCheckoutUI/useCreditCardPayment.tsx
+++ b/packages/checkout/src/hooks/useCheckoutUI/useCreditCardPayment.tsx
@@ -6,7 +6,7 @@ import { formatUnits, zeroAddress, type Hex } from 'viem'
 
 import type { TransakConfig } from '../../contexts/CheckoutModal.js'
 import type { Collectible, CreditCardProviders } from '../../contexts/SelectPaymentModal.js'
-import { getCurrencyCode, TRANSAK_PROXY_ADDRESS } from '../../utils/transak.js'
+import { getCurrencyCode, getTransakProxyAddress } from '../../utils/transak.js'
 import { useTransakWidgetUrl } from '../useTransakWidgetUrl.js'
 const TRANSAK_IFRAME_ID = 'credit-card-payment-transak-iframe'
 
@@ -87,9 +87,10 @@ export const useCreditCardPayment = ({
   // this is a weird hack so that credit card integrations are as simple as possible and should work 99% of the time
   // If an issue arises, the user can override the calldata in the transak settings
 
+  const transakProxyAddress = getTransakProxyAddress(network?.chainId || 137) || ''
   const calldataWithProxy =
     transakConfig?.callDataOverride ??
-    txData.replace(recipientAddress.toLowerCase().substring(2), TRANSAK_PROXY_ADDRESS.toLowerCase().substring(2))
+    txData.replace(recipientAddress.toLowerCase().substring(2), transakProxyAddress.substring(2))
 
   const price = Number(formatUnits(BigInt(totalPriceRaw), Number(currencyDecimals || 18)))
 
diff --git a/packages/checkout/src/utils/transak.ts b/packages/checkout/src/utils/transak.ts
index 799284650..bf852367d 100644
--- a/packages/checkout/src/utils/transak.ts
+++ b/packages/checkout/src/utils/transak.ts
@@ -1,8 +1,6 @@
 import { ChainId } from '@0xsequence/network'
 import { zeroAddress } from 'viem'
 
-export const TRANSAK_PROXY_ADDRESS = '0x4a598b7ec77b1562ad0df7dc64a162695ce4c78a'
-
 interface CountriesResult {
   response: Country[]
 }
@@ -48,3 +46,29 @@ export const getCurrencyCode = ({ chainId, currencyAddress, defaultCurrencyCode
 
   return foundCurrencyAddress || defaultCurrencyCode
 }
+
+interface ProxyByChainId {
+  [key: number]: string
+}
+
+const chainIdToProxyAddressMapping: ProxyByChainId = {
+  [ChainId.MAINNET]: '0xab88cd272863b197b48762ea283f24a13f6586dd'.toLowerCase(),
+  [ChainId.SEPOLIA]: '0xD84aC4716A082B1F7eCDe9301aA91A7c4B62ECd7'.toLowerCase(),
+  [ChainId.POLYGON]: '0x4A598B7eC77b1562AD0dF7dc64a162695cE4c78A'.toLowerCase(),
+  [ChainId.POLYGON_AMOY]: '0xCB9bD5aCD627e8FcCf9EB8d4ba72AEb1Cd8Ff5EF'.toLowerCase(),
+  [ChainId.BSC]: '0x4A598B7eC77b1562AD0dF7dc64a162695cE4c78A'.toLowerCase(),
+  [ChainId.BSC_TESTNET]: '0x0E9539455944BE8a307bc43B0a046613a1aD6732'.toLowerCase(),
+  [ChainId.ARBITRUM]: '0x4A598B7eC77b1562AD0dF7dc64a162695cE4c78A'.toLowerCase(),
+  [ChainId.ARBITRUM_SEPOLIA]: '0x489F56e3144FF03A887305839bBCD20FF767d3d1'.toLowerCase(),
+  [ChainId.OPTIMISM]: '0x4A598B7eC77b1562AD0dF7dc64a162695cE4c78A'.toLowerCase(),
+  [ChainId.OPTIMISM_SEPOLIA]: '0xCB9bD5aCD627e8FcCf9EB8d4ba72AEb1Cd8Ff5EF'.toLowerCase(),
+  [ChainId.IMMUTABLE_ZKEVM]: '0x8b83dE7B20059864C479640CC33426935DC5F85b'.toLowerCase(),
+  [ChainId.IMMUTABLE_ZKEVM_TESTNET]: '0x489F56e3144FF03A887305839bBCD20FF767d3d1'.toLowerCase(),
+  [ChainId.BASE]: '0x8b83dE7B20059864C479640CC33426935DC5F85b'.toLowerCase(),
+  [ChainId.BASE_SEPOLIA]: '0xCB9bD5aCD627e8FcCf9EB8d4ba72AEb1Cd8Ff5EF'.toLowerCase()
+}
+
+export const getTransakProxyAddress = (chainId: number): string | undefined => {
+  const proxyAddress = chainIdToProxyAddressMapping[chainId]
+  return proxyAddress
+}
diff --git a/packages/checkout/src/views/PendingCreditCardTransaction.tsx b/packages/checkout/src/views/PendingCreditCardTransaction.tsx
index f008b85a5..78c614f0b 100644
--- a/packages/checkout/src/views/PendingCreditCardTransaction.tsx
+++ b/packages/checkout/src/views/PendingCreditCardTransaction.tsx
@@ -15,7 +15,7 @@ import {
   useTransactionStatusModal
 } from '../hooks/index.js'
 import { useTransakWidgetUrl } from '../hooks/useTransakWidgetUrl.js'
-import { getCurrencyCode, TRANSAK_PROXY_ADDRESS } from '../utils/transak.js'
+import { getCurrencyCode, getTransakProxyAddress } from '../utils/transak.js'
 
 interface PendingCreditTransactionProps {
   skipOnCloseCallback: () => void
@@ -83,11 +83,13 @@ export const PendingCreditCardTransactionTransak = ({ skipOnCloseCallback }: Pen
   // this is a weird hack so that credit card integrations are as simple as possible and should work 99% of the time
   // If an issue arises, the user can override the calldata in the transak settings
 
+  const transakProxyAddress = getTransakProxyAddress(network?.chainId || 137) || ''
+
   const calldataWithProxy =
     transakConfig?.callDataOverride ??
     creditCardCheckout.calldata.replace(
       creditCardCheckout.recipientAddress.toLowerCase().substring(2),
-      TRANSAK_PROXY_ADDRESS.toLowerCase().substring(2)
+      transakProxyAddress.substring(2)
     )
 
   const price = Number(formatUnits(BigInt(creditCardCheckout.currencyQuantity), Number(creditCardCheckout.currencyDecimals)))