The Sam's Club business credit card offers a line of credit to business owners with a Sam's Club Business Membership. The Sam's Club Business Credit Card is only for use at Sam's Club or Walmart stores. The Sam's Club Business MasterCard can be used anywhere that accepts MasterCard.
Both the Business Credit Card and Business MasterCard serve as a membership card and credit card, meaning business owners only need to present one card when shopping at Sam's Club. The Business MasterCard offers additional perks, including 5 percent back on gas, 3 percent back on dining and travel, and 1 percent back on other purchases, as of 2015.