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A merchant category code (MCC) is a four-digit number assigned by a card network (Visa or Mastercard) to a business, based on the goods or services the business offers. On the Marqeta platform, an MCC group defines a set of MCCs. You can include an MCC group within a spend control to limit user spending at a set of merchants. An MCC group also allows you to automatically increase authorization amounts and to control the expiration of authorizations for the specified MCCs. By default, these controls apply to all cards in your program. An MCC group authorization control can have exceptions defined at the card product level. See Controlling Spending for a tutorial that walks you through the creation of a spend control, as well as links to more information about merchant category codes.

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