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How to cancel a Costco membership

A Costco membership is canceled by its Primary Member, either in person at any warehouse membership counter or by phone with the Member Services Center.

Last updated October 15, 2026

How do I cancel Costco?

  1. 1Make sure the Primary Member on the membership is the one canceling.
  2. 2Go to any Costco warehouse membership counter and ask a team member to cancel your membership.
  3. 3Or call the Member Services Center at 1-800-774-2678 and speak to a live agent.

What happens after I cancel?

  • If you cancel at a warehouse membership counter, you receive an immediate refund.

Steps summarized from Costco's help center on October 15, 2026. Menus change, so the official Costco guide is the source of truth. Subskim is not affiliated with Costco. How these guides are checked

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