Fees & Rates
What Is a Merchant Category Code (MCC) and Why It Affects Your Rate
Every business that accepts cards gets assigned a four-digit merchant category code by the card networks. That single code shapes your interchange rate, your risk profile, and even which rewards a customer's card earns when they pay you -- and most business owners have never seen theirs.
What an MCC actually is
A Merchant Category Code (MCC) is a four-digit number Visa, Mastercard, and the other card networks use to classify what kind of business you run -- restaurant, auto repair, retail, professional services, and hundreds of other categories each have their own code. Your processor assigns this code when you open your merchant account, based on your business type and how you describe your goods or services.
Why the code changes your rate
Card networks set interchange -- the base cost baked into every transaction -- differently depending on the category of business. Categories the networks treat as higher-risk for chargebacks or fraud (certain travel, subscription, and specialty retail categories) typically carry higher interchange than categories seen as lower-risk (many everyday retail and service categories). This means two businesses with identical processing volume can pay meaningfully different effective rates purely because of how they're classified.
- An inaccurate MCC can push you into a higher-cost category than your actual business justifies
- Some card rewards and business-card bonus categories are also determined by the merchant's MCC, which is why a customer's card sometimes earns different rewards at seemingly similar businesses
- If your business model changes (you add a new product line, shift from retail to services), your MCC may need to be updated to reflect it accurately
What to actually check
Ask your processor directly what MCC is on file for your account and confirm it matches your real, current business activity. If you believe it's misclassified -- for example, you're coded under a generic or higher-cost category when a more specific, accurate one exists -- raise it. A correction won't always lower your rate, but leaving an inaccurate code in place removes any chance of it.
Not sure your rate reflects your real business?
A quick statement review shows whether your merchant category and rate line up with what you actually do.