Patent ID: 8635125

Claim:
A method, implemented at least in part by a computing system having a computer processor, the method comprising: displaying simultaneously on a user interface a plurality of transaction records pertaining to a plurality of sales transactions, each of the transaction records having a plurality of user-editable fields including: a date field, a supplier field, an editable net sales amount field, an editable gross sales amount field, and an editable sales tax code field; displaying a jurisdiction field; receiving a user input in the jurisdiction field selecting a particular jurisdiction and providing one or more applicable tax codes for the selected jurisdiction as selectable options in the sales tax code field of a first transaction record; receiving an input value in one of the net sales amount field or the gross sales amount field of the first transaction record, the input value being received as either a net sales amount or a gross sales amount; receiving a user input in the sales tax code field of the first transaction record selecting at least one of the one or more applicable tax codes for the selected jurisdiction; calculating, with the computer processor, an output value based on the input value and a pre-defined mathematical sales tax relation, identified based on the at least one applicable tax code selected in the sales tax code field of the first transaction record, between a net sales amount and a gross sales amount; and displaying the output value in an output field along with a tax amount calculated using the sales tax relation, the output field comprising one of the gross sales amount field and the net sales amount field of the first transaction record that did not receive the input value.