The Costco membership card rules guide 2026 covers a subject that most members never think about until a scanner beeps at the front door or a friend asks to borrow the card. Today is October 22, 2026, and with the holiday rush coming, more first-timers, guests, and visiting relatives will be walking in. This guide explains what has been reported about entrance scanning, photo ID, guests, household cards, and the Executive reward, so you know what to expect. An important hones

Costco warehouses accept exactly one type of credit card: Visa. Not American Express. Not Mastercard. Not Discover. Visa only — a contractual arrangement that has been in place since 2016 and that makes the Costco Anywhere Visa Card by Citi the only co-branded credit card option for members who want Costco-specific rewards while shopping at the warehouse. The card has no annual fee of its own — the requirement is an active Costco membership, which members already pay. It doub