Abstract: A financial processing system for determining a financial network for routing an electronic transaction includes a network BIN database including a plurality of terminal routing profiles. Each routing profile includes at least a corresponding bank identification number (BIN) and a prioritized list of preferred financial networks of an associated terminal created by a transaction acquirer. The financial processing system provides a BIN file including a plurality of BINs and indicating financial networks having claimed priority over any of said BINS from the plurality. From the routing profile of a terminal, the financial processing system determines a financial network preferred by the transaction acquirer for routing said electronic transaction, and from the BIN file, determines if at least one network flag is marked indicating a network's claim of priority over the BIN.