1. A method for processing transactions between at least one buying company and at least one selling company by a third party using a central database comprising the steps of: (a) receiving buying company accounting data into the central database; (b) receiving selling company accounting data into the central database; (c) automatically matching preselected buying company accounting data and selling company accounting data; (d) providing for remittance of amount due to the selling company from the buying company according to predetermined criteria relating to the matched data; and (e) providing for interaction with the central database by the at least one buying company and the at least one selling company.