Describes merchant’s business type, transaction type, or business name. For example, MCC 0742 is used for any merchant providing veterinary services. Other MCCs are used by a single business, such as 3000 for United Airlines. If a merchant sells multiple items or services, the MCC will describe the item or service that has the highest annual sales volume. MCCs are managed by the card associations and assigned by the acquirer when the merchant account is created. Examples include: 4131 – Bus Lines 5072 – Hardware Equipment and Supplies 5139 – Commercial Footwear 8651 – Political Organizations