A computer-implemented method for processing a discount is described. The method is implemented using a payment processor computing device associated with a payment network. The method includes receiving, at the payment processor computing device, from a discount module computing device, a notification of an adjusted authorization amount for a transaction, wherein the notification is received by the discount module computing device from an intercept node computing device at the time a cardholder makes a purchase. The method also includes receiving, at the payment processor computing device, an authorization request message including a non-adjusted authorization amount for the transaction, replacing the non-adjusted authorization amount with the adjusted authorization amount in the authorization request message, and transmitting the authorization request message to an issuer computing device.