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The Plain-English Cheat Sheet

Costco Return Policy

The window, the proof, and the exceptions. All in one place.

Official Policy (opens in a new tab)
Reviewed against the official policy on October 11, 2026. Retailer terms and your receipt take priority.

At a Glance

Standard Return Window

Satisfaction guarantee

Most merchandise falls under Costco’s satisfaction guarantee rather than a fixed return window. Electronics and other exceptions have specific limits.

Receipt Lookup

Warehouse Member Services; Costco.com Orders & Returns for online purchases

When the Clock Starts

Receipt date for the 90-day electronics and online recreational-cart windows; most other merchandise has no fixed day window stated in the satisfaction guarantee.

Costco Return Policy Without a Receipt

For warehouse returns, Costco says a receipt or original packaging helps but may not be necessary. Bring the product to warehouse Member Services. Online return requests can be started through Costco.com Orders & Returns.

Bring the item, any packaging and accessories, your payment card, and photo ID if requested. Purchase lookup is not a guarantee of return approval.

Item Exceptions

These rules can override the standard window.

Costco category-specific return rules
Item / CategoryWindowWhat to Know
Listed electronics & major appliances90 daysFrom receipt. Covers televisions, projectors, specified major appliances, computers, touchscreen tablets, smart wearable devices, cameras, drones, camcorders, MP3 players, and cellular phones. Cellular-phone details vary by carrier service contract.
DiamondsSpecial rulesThe policy's special-handling category is labeled 1.00 ct or larger. Its text requires members returning a diamond over 1.00 ct to present original IGI and/or GIA paperwork, receive a Jewelry Credit Memo, and undergo authenticity inspection within 48 hours.
Cigarettes & alcoholSpecial rulesCostco does not accept returns where prohibited by law.
Limited-life productsSpecial rulesProducts such as tires and batteries may have product-specific limited warranties.
Special-order & custom-installed productsSpecial rulesProducts manufactured to a member's personal specifications cannot be returned or refunded, except for warranty repair or replacement when specifications are not met.
Nonrefundable productsSpecial rulesIncludes airline and live-performance event items, precious metals, Shop Cards, and gift-card and ticket items.
Recreational carts ordered online90 daysFrom receipt; consult the product page for return instructions.
Contact lenses & eyeglassesSpecial rulesCostco.com contact lenses can be returned to a warehouse Optical Department. Unsatisfactory online prescription eyeglasses may be returned there for repair, replacement, or refund. For warehouse eyeglasses, consult the warehouse Optical Department.
Hearing aidsSpecial rulesContact the Hearing Aid center at the Costco warehouse.
Freight-delivered productsSpecial rulesFreight returns are normally picked up using the original delivery service level. Pickup excludes Special Order Kiosk, Custom Installed Programs, and warehouse Special Event purchases that may include delivery.

Can You Return Opened Items?

Costco publishes a merchandise satisfaction guarantee with listed exceptions, but its published policy does not state a blanket opened-item rule. Check the product’s Shipping and Returns information and the applicable category restrictions.

Holiday & Membership Extensions

Do not assume a holiday or membership extension applies. Dates change by season and product. Check your order’s return-by date and the retailer’s current terms before relying on extra time.

Frequently Asked Questions

What is Costco’s return policy?

Most merchandise falls under Costco’s satisfaction guarantee rather than a fixed return window. Electronics and other exceptions have specific limits.

Can I return an item to Costco without a receipt?

For warehouse returns, Costco says a receipt or original packaging helps but may not be necessary. Bring the product to warehouse Member Services. For online purchases, return requests can be started through Costco.com Orders & Returns.

Can I return opened items to Costco?

Costco publishes a merchandise satisfaction guarantee with listed exceptions, but its published policy does not state a blanket opened-item rule. Check the applicable category restrictions and the product’s Shipping and Returns information.

When does the Costco return window start?

The 90-day window for listed electronics and online recreational carts starts when the member receives the merchandise. Most other merchandise has no fixed day window stated in the satisfaction guarantee; product-specific exceptions still apply.

Source & Accuracy

Source: Costco official return policy. This independent summary does not replace retailer terms. Eligibility depends on your product, condition, proof of purchase, seller, and location.

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