Embodiments of the present invention are directed to a “one-click payment” scheme for streamlining customers' online checkout experiences. According to one particular embodiment, a customer can use a computing device to be authenticated and receive a unique, one-time token to make a one-click payment during an online checkout process. The one-time token may be encrypted and directly associated with a payment account which the customer is authorized to access. The online merchant may forward a transaction request including the one-time token and purchase amount to an authorization server which would verify the token and charge the corresponding payment account.