Methods and systems for enabling and performing secured, single action payments from a mobile device are disclosed. One method includes receiving user credentials at an application installed on a mobile device, and transmitting the user credentials from the mobile device to a server alongside a device identifier. The method includes receiving data at least partially defining encrypted personal payment information and saving the encrypted personal payment information in a memory of the mobile device in association with the application. At least prior to receiving a user request to make a payment via the application, the mobile device lacks a decryption key capable of decrypting the encrypted personal payment information.