The Costco Visa card also doubles as a membership card. If you don’t have a Costco Visa card, you can still use your non-credit card Costco identification card. read more
At a Costco store: you may pay with cash, a check, a debit card, a Costco Cash Card, or with a Visa credit card. Visa is the ONLY credit card accepted in Costco warehouse stores in the United States — no MasterCard, no American Express, no Discover. read more