12 Costco Membership Rules You’re Probably Missing Out On

Things Costco Members Can Get for Free

Costco earns praise for combining bulk savings options with specialty products and unexpectedly tasty food court offerings. As of November 2024, Costco had 77.4 million paid members, up 7.6% from the prior-year period, as reported by Yahoo Finance. The Costco experience extends beyond your membership card because knowing the rules ensures you benefit from what makes shopping there unique.

Members often overlook several rules Costco implements, which control payment options and return processes. Costco relies on these guidelines to distribute savings and manage its store operations while maintaining operational efficiency.

Here are 12 important Costco membership rules that may surprise you, and learn how to maximize your membership benefits.

Your Membership Card Must Include a Clear Photo  

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Costco takes member security seriously. Each membership card requires an identifiable image of your face without any obstructions. Customers with cards that do not comply with this standard must present a valid U.S. photo identification such as their passport or driver’s license.

Why the strictness? Costco states that the strict membership card policy prevents card-sharing fraud that would undermine Costco member benefits. Need a new photo? You can easily update your membership photo by visiting the membership desk, which takes minutes.

Always Be Prepared to Show Your Card

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Costco members must present their cards at store entry points and checkout counters as well as when they visit the food court. Costco restricts its membership benefits to paying members through advanced card-scanning machines, which have been implemented since 2024 to improve operational efficiency.

Leaving your card at home? Don’t expect to complete your purchases without your card because it’s essential.

Only the Primary Member Can Make Purchases

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The payment method used at Costco must contain the same name as the membership card holder. Members with registered payment options such as checks, Visa credit cards, or Apple Pay maintain exclusive transaction capabilities. Members can allow guests to shop with them but retain exclusive purchasing rights.

Credit Card Limitations

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Costco operates under an exclusive arrangement with Visa, which only restricts their acceptance to Visa credit cards, according to CNBC. You can pay using cash, checks, or debit cards at Costco, along with mobile payment options. However, members using Mastercard or American Express cards need to adjust their payment methods.

Non-Members Pay More Online

Online Shopping with Virtual Card Numbers
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You can browse their website without a Costco membership and proceed with online purchases. The Globe and Mail states that non-members will face a 5% surcharge on internet purchases. Use this information to determine if a Costco membership makes financial sense.

Guests Can Join You, But They Can’t Buy  

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Members may bring two guests to Costco, but guests are not permitted to buy items. Should your guest try to pay for something you need to buy, you will have to finish the payment using your card before reimbursing them yourself.

No Membership Sharing

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Costco’s guidelines are crystal clear—memberships are non-transferable. According to People.com, in a statement, Costco emphasized, “we don’t feel it’s right that non members receive the same benefits and pricing as our members.”

If you share your card with someone else, your membership could be suspended or terminated. Employees monitor self-checkout closely, which makes methods like card swiping by others ineffective for compliance purposes.

Be Careful With Costco’s Generous Return Policy

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Costco offers one of retail’s most lenient return policies. You can return electronics within a 90-day window, and most other products, including partially eaten food items without any time limit, have no time restrictions. You could face a ban if you abuse this return policy by “renting” electronics or canceling memberships to receive refunds.

Request Price Adjustments Within 30 Days

Missing Price Adjustments
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You purchased a big-ticket item and then discovered that its price decreased? Costco’s website states, “Purchases that reduce in price within 30 days of the date of purchase are eligible for a price adjustment.”

Costco will issue the difference as a refund if you make a request within 30 days of purchase. This policy enables customers to secure the best value while avoiding unnecessary return and repurchase procedures. The key? Keep an eye on price changes.

No Coupons Allowed

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You should not clip coupons before visiting Costco because they do not accept them. The reason? Costco establishes direct relationships with manufacturers to maintain the lowest possible prices throughout the year. Costco members can use additional discounts through their Savings Booklets, which feature current deals.

Service Animals Only

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Although pets may provide comfort, Costco maintains its service animal policy according to ADA guidelines. Costco permits emotional support animals to enter only when they fulfill the necessary standards for trained psychiatric service. The policy assists in food safety maintenance while providing other customers with a smoother shopping experience.

Renewing Memberships Comes With a Deadline

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Some Costco customers find their membership terms to be confusing. Costco notes that your membership continues from its initial expiration date upon renewal within a two-month window. This prevents any membership time from being lost. Memberships begin anew from the present date when renewal occurs after the two-month deadline.

Disclaimer – The Finance Key does not provide and does not intend to provide financial, investment, tax, or legal advice. Information contained in this article is for informational and educational purposes only. This list is solely the author’s opinion based on research and publicly available information. The inclusion of links to third-party content is not an endorsement by The Finance Key of such content or services. Please do your due diligence and use your discretion.

Disclosure: For transparency, this content was partly developed with AI assistance and carefully curated by an experienced editor to be informative and ensure accuracy.

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