MCC code lookup

A four-digit number that says what a business sells. Card schemes assign one to every merchant, it travels with each transaction, and it is how a card network, an issuing bank and your own acquirer all describe your business to each other without ever looking at it. The codes come from a published standard, so the same number means the same thing everywhere.

No, and this is the confusion worth clearing up. A merchant ID (MID) is issued to you, identifies your specific account, and is unique, which is why there is no public list of them to search. An MCC describes your category, is shared with every other business doing the same thing, and is public. You can look up any MCC. You cannot look up somebody else’s MID.

Ask your acquirer or payment provider directly. It is on your merchant agreement and usually in your processing dashboard, though not always somewhere obvious. If you cannot find it, ask for it in writing, because it is worth knowing what you have been classified as before it starts costing you.

Sometimes. Where a business is genuinely misclassified, an acquirer can request a change with the schemes, and it is worth pursuing if you are being priced or blocked as something you are not. It is not a lever for choosing a cheaper category: the code has to describe what you actually sell, and the schemes audit this.

Three reasons that all cost money. Interchange varies by category, so your MCC is an input to what every transaction costs. Acquirers and banks set risk appetite by category, so it influences whether you are accepted, and whether a reserve is applied. And some issuers block or surcharge specific categories, so a wrong code can decline cards that should have worked.

The four-digit codes are the published ISO 18245 standard used by the card schemes. This set was compiled from public Visa, USDA and IRS listings and covers 973 codes with a published description. Descriptions are reproduced as published rather than rewritten, so what you see here matches what an acquirer or issuer will show you.