Merchant Category Codes: What You Need To Know? As a business owner, it's important to know which merchant category codes (MCCs) apply to your business. These codes are used by the credit card companies to classify businesses according to their primary products or services. There are four major credit card networks: Visa, Mastercard, Discover, and American Express. Each network has its own list of MCCs, which are assigned to businesses by the card issuer. Some businesses may fall into more than one category, so they may have more than one MCC. For example, a restaurant that also offers catering services would likely have both the "restaurants" and "catering" MCCs. The MCC is a four-digit code that is used to identify the business category of the merchant. Knowing which MCC applies to your business can be helpful in a number of ways. First, some cards offer rewards or cash back based on the type of purchase. If you know which MCC applies to your business, you can make sure you're using the right card for the purchase to get the maximum benefit. Second, some businesses are restricted by their MCC. For example, a business with an "adult entertainment" MCC may not be able to process credit card payments through certain processors or acquirers. Third, some banks use MCCs to help assess risk when considering a merchant account application. A business with a high-risk MCC may be required to provide additional information or collateral before being approved for an account. There are over 200 different MCCs, so it's not possible to list them all here. However, we've provided a few examples of common MCCs below: - 4111 – Transportation – Air, Rail, Sea - 4214 – Transportation – Motor Freight Carrier - 4812 – Telecommunications Equipment - 5662 – Office Supplies