Merchant Type controls can be used to permit or restrict your debit card from being used with specific categories of merchants. Merchant Types include Department Stores, Entertainment, Gas Station, Groceries, Household, Personal Care, Restaurants, and Travel. A Merchant Category is assigned based on the merchant’s primary line of business by the Debit Card processor they use. Debit Card processors will assign businesses a single Merchant Category code based on the higher volume of service/merchandise sales.