Abstract: A process for assignment of accounting codes and/or sales tax provisions upon recordal of a transaction on the transaction system of a banking institution characterised in that includes the steps of communicating a pre-determined list of accounting code categories to the transactor, selection of one or more appropriate categories by the transactor, assignment of the sales tax applicable to the transaction by the transactor, forwarding a message containing the accounting code selected and the sales tax information, to the banking institution, interpretation of the received message by the transaction system, storing the information contained in the message within the transaction system, and forwarding a confirmation of the receipt to the transactor.