System and methods for transaction processing using a rewards account are described. The method may include: receiving a transaction containing a transaction type, formatting a message based on the transaction type and sending the message. The method may alternately include, receiving a transaction message and processing a transaction based on a transaction type contained within the transaction message. The system may include one or more software modules performing the following functions: receiving module to receive transactions, transaction processing module to parse the transaction and determine a transaction type, message processing module to format a transaction message based on the transaction type, and a user interface module to provide a user interface to a customer.