Avis Budget Group is now offering Amex Express Checkout, American Express' method for U.S. card members to pay online by using their americanexpress.com account login, for reservations made on Avis.com and Budget.com.

Avis Car Rental and Budget Car Rental are the only car rental providers participating in the digital payment platform, according to the company.

"Avis and Budget customers could always save money when paying for their rentals in advance, but now they have another great new payment option," said Scott Deaver, executive vice president and chief marketing officer, Avis Budget Group. "With Amex Express Checkout, travelers can pay for Avis or Budget reservations in advance in a simple and fast way and get back to more important matters."

To pay for an Avis and Budget rental with Amex Express Checkout, customers must select the "Pay Now" option when making a reservation on Avis.com or Budget.com. Then they select Amex Express Checkout as their method of payment. American Express Card Members enter their americanexpress.com account login information and choose their card to pay for their Avis or Budget reservation.

"Amex Express Checkout delivers a simple and secure checkout process for our card members and merchants," said Dave Wolf, vice president, digital partnerships and development, American Express. "We are excited our card members now have the opportunity to use Amex Express Checkout at Avis and Budget, helping make their travel experience as seamless as possible."