Disclaimer

Last updated October 12, 2026.

Not affiliated with Costco

Run Don't Walk is an independent fan site. It is not affiliated with, endorsed by or sponsored by Costco Wholesale Corporation. Costco, Kirkland Signature and related names are trademarks of their owner and are used here only to describe the products and memberships we discuss.

Estimates, not guarantees

Our calculators give estimates based on the numbers you enter and on Costco's published U.S. fees and rules as of the date shown on how we check our numbers. Fees, rewards and the purchases that qualify can change at any time, and your own results may differ.

Not financial advice

Everything on this site is general information. It is not financial, tax or legal advice. Check the current terms with Costco before you join, upgrade or cancel a membership.

No warranty

We work to keep the site accurate but can't promise it is free of errors. Use it at your own discretion. If you spot a mistake, please let us know.