US Patent 8131619 Service fee-based payment processing

A computing device that includes a processor and a memory receives inputs including indications of a transaction amount and a type of transaction. It is determined whether the transaction amount exceeds a predetermined threshold. Further, it is determined whether the type of transaction is one of a cash transaction and a payment card transaction. If the type of transaction is a cash transaction and the transaction amount exceeds the predetermined threshold, a predetermined service fee is added to the transaction amount, and a predetermined discount is subtracted from the transaction amount.