Costco’s published policy offers a 100% satisfaction guarantee on merchandise, with exceptions and limitations. Costco’s general policy does not give mattresses a separate trial period or promise that every mattress return will be accepted. Check the exact product listing and your order details, and confirm return eligibility with Costco before relying on a specific deadline, refund, or condition.
For Costco.com orders, Costco lists returns through its online order flow or at a warehouse. Its online return guidance says return shipping is not charged, but pickup options can depend on the item and address; confirm the available method in your order. Costco Next purchases are handled through partner brands, so check the item’s terms.
Policy checked October 27, 2026 against Costco’s published return and online-order guidance. Return eligibility and logistics can vary by item; confirm your order details with Costco.
Comparing stores? See our 2026 mattress return policy comparison for Costco, Amazon, IKEA, Walmart, Mattress Firm, Sam’s Club and Wayfair side by side.
Costco mattress returns at a glance
| Question | Answer |
|---|---|
| Opened or used mattress? | Check the item’s terms and confirm eligibility with Costco |
| Time limit? | Costco’s general policy does not state a mattress-specific deadline; confirm for your item |
| Receipt required? | Costco says a receipt or original packaging may help, but may not be necessary |
| Online (Costco.com) return | Use the order’s return options or ask Costco about pickup for your item and address |
| Warehouse purchase return | Returns desk at any Costco warehouse |
| Restocking or pickup fee? | Costco says online returns are not charged return shipping; verify item-specific pickup details |
| Main exception | Costco Next third-party items; abuse of the guarantee |
Do you need the receipt?
Costco says a receipt or original packaging can help with an in-warehouse return, but may not be necessary. For Costco.com purchases, use the Orders & Returns page or bring the order details to the warehouse. If a purchase cannot be located, ask Member Services what additional information they need rather than assuming every transaction can be retrieved.
Opened and used mattresses: what’s actually allowed
Costco’s 100% Satisfaction Guarantee treats a mattress like any other general merchandise: the policy page does not describe a mattress-specific return window; confirm the terms for your exact item with Costco. The published guarantee includes exceptions, so do not treat it as a defined sleep trial. Costco’s policy reserves exceptions and limitations; contact Costco about the mattress’s condition and return eligibility before arranging a return.
Moving a mattress back to the warehouse
If you bought your mattress in a Costco warehouse and need to transport it for a return, a correctly sized mattress moving bag can help keep it protected during the trip. Check the mattress dimensions and your vehicle before purchasing supplies; a bag does not replace safe lifting or tie-downs.
Compare mattress moving bags with handles on Amazon →
Affiliate disclosure: As an Amazon Associate, Yawnder earns from qualifying purchases. Prices and availability may change.
Choosing a mattress moving bag
| What to compare | Why it matters |
|---|---|
| Size and depth | Match all mattress dimensions; thick hybrids need more depth. |
| Handles and seams | Reinforced construction helps with careful two-person transport. |
| Closure and moisture protection | Look for a secure seal, especially when moving outdoors. |
These are selection criteria, not endorsements of unverified listings.
Considering a replacement mattress? Compare our Costco mattress buying guide and best mattresses of 2026 before choosing another model.
Online vs warehouse returns
Bought in a warehouse
Bring the mattress to the returns desk at any Costco warehouse — it does not have to be the store where you bought it. A full-size mattress won’t fit in most cars, so many members rent a truck or borrow one; Costco does not offer pickup for warehouse purchases.
Bought on Costco.com
Start the return in your Costco.com account or by calling customer service. Use the return options shown in your Costco.com order or contact Costco to confirm whether pickup is available for the item and address. Costco’s online return guidance says return shipping is not charged; refund processing can vary by item. You also have the option of dropping it at a warehouse returns desk if that’s faster for you.
Exceptions and fine print
- Costco Next: these mattresses are sold and shipped by partner brands through Costco’s site. The brand’s own return policy can apply, so read the item page before ordering.
- Condition: returns in unsanitary or heavily damaged condition can be declined.
- Guarantee abuse: Costco reserves the right to refuse returns from accounts with a pattern of excessive returns.
- Marketplace and special-order items may carry their own terms; standard in-warehouse and Costco.com mattresses are covered by the guarantee.
Membership and refund issues
- Refund method: the refund goes back to the original payment method in full — Costco’s online return guidance says return shipping is not charged; confirm any item-specific pickup details with Costco.
- Executive membership: the 2% reward earned on the purchase is reversed when the refund posts.
- Lapsed membership: you generally need an active membership to process a return, since the purchase lookup runs through your membership number. If yours has expired, renew it first or speak with the membership desk.
- Who bought it matters: returns are processed against the purchasing membership, so the member who bought the mattress should be the one returning it.
Before you buy another Costco mattress
Compare alternatives before reordering: If you are returning a mattress because of comfort, compare firmness, trials and total delivered cost with current online models. Costco’s terms apply only to purchases at Costco; competing brands have their own policies.
Compare Helix mattresses → · Compare Brooklyn Bedding →
Affiliate links may earn Yawnder a commission; always check the merchant’s current return terms.
Use the return policy as one part of the decision—not the only part. Compare the exact model, delivery and pickup logistics, warranty, and the price available on the day you buy.
Best Costco mattresses · Costco mattress sale calendar · Compare tested mattresses · Visit the Yawnder showroom
Official source: Costco Return Policy.
Frequently asked questions
Can you return an opened or used mattress to Costco?
Costco’s published policy provides a general satisfaction guarantee with exceptions. It does not specify a mattress-specific trial period or guarantee every return; check the product listing and confirm eligibility with Costco.
Do you need a receipt to return a mattress to Costco?
Costco says a receipt or original packaging can help, but may not be necessary to process a warehouse return. Bring membership and order details if available, and check with Costco about your purchase.
How do you return a mattress bought on Costco.com?
Costco.com orders can be returned through Costco’s online order flow or at a warehouse. Costco says online returns are refunded with shipping and handling and no return shipping charge; check your order for the available return method and any item-specific instructions.
Is there a time limit on Costco mattress returns?
No. Mattresses are not part of Costco’s 90-day electronics return window. The 100% Satisfaction Guarantee has no stated deadline, though returning within a reasonable period and in sanitary condition is expected.
Does Costco charge any fee to return a mattress?
Costco’s online return guidance says online returns are refunded with shipping and handling and no return shipping charge. Check your order for item-specific instructions and refund timing.
What about Costco Next mattresses?
Costco Next items are sold and shipped by third-party brands through Costco’s site, and the brand’s own return terms can apply instead of Costco’s standard policy. Check the item page before buying.
Can Costco refuse a mattress return?
Yes, in rare cases. Costco monitors its satisfaction guarantee for abuse, and mattresses returned in unsanitary or heavily damaged condition may be declined.
Rather not gamble on a return? Yawnder clearly labels which mattresses have standardized test data and which rely on manufacturer specifications, and our direct-sale return terms are published before you buy.