The transaction processing system and method provide an efficient and effective way to authorize promotion redemption. The transaction processing system may receive an indication of a request for authorization, the indication comprising a merchant identifier, an account number, and a transaction amount. The transaction processing system may determine whether the request for authorization corresponds to a promotion. The system may further transmit a transaction authorization based on whether the request for authorization corresponds to the promotion. The transaction processing system may cause a promotion database to designate the promotion as redeemed. In this fashion, the transaction processing system improves the consumer experience and minimizes the transaction time needed to identify and redeem a promotion.