Systems and methods for providing a transaction authorization from a funds facilitation system for a transaction requested by a user to a merchant system such that the user is not required to input any user authentication information in excess of authentication information required by the merchant system are provided. A system and method can include receiving a transaction request from the merchant system containing a merchant ID, a merchant user ID, and a transaction amount. The system identifies a funds facilitation system user ID based on the merchant ID and the merchant user ID and determines satisfaction of a funds facilitation system user authentication requirement based on the merchant system having a trusted status with the funds facilitation system. A transaction authorization message or transaction denial message is provided to the merchant system based on account information associated with the user and the transaction amount.