Determination of interchange categories

One or more computer-readable storage media having computer-readable instructions that, when executed by a computing device, cause the computing device to perform acts comprising:

• receiving credit card transaction data from a database for credit card transactions associated with a particular merchant, the credit card transaction data indicating, for one or more credit card transactions, an interchange category assigned by a card issuer;
• receiving published interchange-category parameters for the interchange category assigned, the published interchange-category parameters comprising a merchant-status parameter specific to a status of a merchant;
• receiving a parameter specific to a status of the particular merchant;
• and
• determining, automatically and without user interaction and for the one or more credit card transactions, whether the interchange category assigned is correct based on whether the merchant-status parameter matches the status of the particular merchant.