We can process Google Pay transactions via the Payment Gateway API and Checkout. Please visit our Developer Portal for information on implementing Google Pay with the Payment Gateway API. To enable Google Pay for Checkout, please review the configuration guide for Checkout. An “Express Checkout” button will appear next to the standard checkout option when you've enabled Google Pay on Checkout.
If Google Pay is selected, your customer will see a list of payment cards stored in their Google Wallet to be used for payment. Google Pay transactions will process with your account and can be viewed in Merchant Manager.