How to cancel Costco Membership (2026, step by step)

Costco Membership can be cancelled by phone in 3 steps. Use the official link below to go straight to the cancellation page.

1. Bring your membership card and photo ID to any warehouse membership counter.
2. Ask to cancel your membership; the fee is refunded.
3. US: or call Member Services at 1-800-774-2678.

Open Costco Membership's cancellation page

Last checked: October 4, 2026 · Official sources: customerservice.costco.com/app/answers/answer_view/a_id…, atencionalsocio.costco.com.mx/app/answers/detail/a_id/4…, costco.co.jp/OtherTermsAndConditions, costco.com.tw/member-privileges-conditions