A system and method for issuance, redemption, and reimbursement of digital incentives. A central database connected to the internet: enables customers to register unique customer registration information; is able to store this information and assign unique identifiers to it; and is accessible to incentives providers to make available digital incentives. Existing point-of-sale terminals: are authenticated to have access to the central database; have payment devices; are connected to the internet; and are provided with a message broker that facilitates communication with the central database. The customer redeems digital incentives at one of the existing point-of-sale terminals at the time of purchase by first presenting their unique identifier. The message broker routes the unique identifier to the central database which authenticates and validates the existing point-of-sale terminal, the customer's unique identifier, and the payment device. The central database then returns validated applicable digital incentives to the message broker which forwards the validated digital incentives for redemption.