Abstract: A method and apparatus for performing economic nexus determination by a transaction processing system. The method may include accessing a plurality of transactions associated with a plurality of merchant systems processed by the transaction processing system over a period of time. The method may also include inferring a geographic location, from among a plurality of geographic locations, for each of the plurality of transactions based on one or more transaction parameters. Then, the method may include aggregating a total revenue per geographic location per merchant system based on the inference of geographic location determined from the one or more transaction parameters. For a merchant and for a geographic location for which said merchant has location based revenue within the geographic location, the method may include applying an economic nexus rule corresponding to the geographic location, and determining when the economic nexus rule corresponding to the geographic location is satisfied.