Abstract: A system and a computer program product process billing documents and payments. The system includes one or more processors for processing billing documents and for processing payments, and one or more databases in communication with the one or more processors. The one or more databases store information generated by the one or more processors. The computer program product enables a computer system to process billing documents and payments. The computer system has a computer readable storage medium bearing software instructions. The computer program product has software instructions for enabling the computer system to perform predetermined operations, and the predetermined operations include: providing print rules that control the production of billing documents; providing remittance rules that control processing of the payments; and storing images related to the billing documents and the payments.