Merchant Category Code (MCC)

What a Merchant Category Code is

A Merchant Category Code, or MCC, is a four-digit code used to classify your business by its line of business. Grocery stores, for example, use code 5411, while bus lines use 4131. Your acquirer or processor assigns the code during account setup using information about what your business sells or does.

MCCs are used in transaction processing and reporting. Issuers use them to identify the merchant category in cardholder records, and payment systems use them in decisions about transaction handling. The MCC is not the same as a SIC code. SIC is a separate industry classification system, and an MCC does not necessarily map one-to-one to a SIC code.

Your MCC is not a fee, but the wrong business category can change how transactions are priced and evaluated.

How your MCC affects payments

The code tells the payment system what kind of business is taking the payment. It can affect which interchange category applies, how a transaction is evaluated for risk, and how a cardholder's purchase is classified for rewards or spending controls. The MCC is one factor in processing decisions, not a rate that determines your total cost on its own.

For example, a business that rents cars and also sells fuel should have a code that reflects its actual line of business. If the assigned category does not fit, transactions could be treated differently from what you expect. The code can also affect how customers' card issuers classify purchases, including whether a purchase qualifies for a category-based reward.

What it means for your costs

An MCC is not a separate line-item fee, and changing it does not guarantee a lower rate. It can influence the interchange category assigned to a transaction, while your total card cost also includes network fees and your processor's markup. Interchange itself is set by card networks, and only the processor markup is negotiable.

A code that inaccurately describes your business can put transactions into an unsuitable pricing or risk category. That makes accuracy worth checking, especially if your business has a specialized model or sells across several lines. Do not request a code simply because another business pays less. The code must match your actual business activity.

How to verify your code

Your merchant statement does not always display the four-digit MCC, so look in your merchant account profile or onboarding records first. If the code is not shown, request the exact MCC on file for your merchant account from your acquirer or processor. Compare it with your primary goods or services and the current MCC list used by the relevant card network.

If the code appears wrong, send a concise description of what your business sells, how customers pay, and any relevant business-profile details. Request a review of the assigned MCC, then confirm the code was updated in your account records. Keep the response with your processing documents so you can explain the classification if a later pricing or risk review raises questions.

What you can actually change

1. 01
   Find your code. Check your merchant account profile or onboarding records for the four-digit MCC. If it is missing, request the exact code on file for your account.
2. 02
   Match your business. Compare the code with what your business primarily sells or provides. A code chosen only because it appears cheaper is not a sound correction.
3. 03
   Request a review. If the code does not fit, send your acquirer or processor a clear description of your business and ask for an MCC review. Save the updated account record.

Frequently asked questions