Where to redeem your Costco reward certificate
You redeem a Costco reward certificate at the register when you check out, either in a warehouse or at the gas station. Hand the certificate to the cashier along with your membership card before they ring up your purchase. The cashier will scan or manually enter the certificate number, and the dollar amount will be deducted from your total bill.
You cannot redeem a certificate online through Costco.com or by mail. The certificate must be presented in person at a Costco location. If you have a digital certificate sent to your email, you can show it on your phone to the cashier, or print it out and bring the physical copy.
Key Takeaways
- Present your certificate to the cashier at checkout in any Costco warehouse or gas station, and it will reduce your total bill by the certificate amount.
- Certificates expire, so check the expiration date printed on yours before you shop — expired certificates cannot be redeemed.
- You can use multiple certificates in a single transaction if you have more than one.
- If your certificate is lost, damaged, or never arrived, contact Costco member services with your membership number and they can issue a replacement or credit.
Checking the expiration date on your certificate
Every Costco reward certificate has an expiration date printed on the front. This date is usually 12 months from the date the certificate was issued, though some promotional certificates have shorter windows. Check this date before you plan to use the certificate, because Costco will not honor an expired one.
If you received your certificate by mail and cannot find it, log into your Costco account online or call member services at 1-800-992-2683 to confirm the expiration date. They can also tell you the certificate number if you need to reference it.
What happens if your certificate is lost or damaged
If your certificate arrives damaged, never arrived, or was lost, contact Costco member services with your membership number and the date you expected to receive it. They will verify the certificate in their system and either reissue a physical copy by mail or credit the amount directly to your membership account.
This process typically takes one to two weeks for a replacement certificate to arrive. If you need the funds sooner, ask member services whether they can explore the credit to your account when ready instead of mailing a new certificate.
Using multiple certificates in one transaction
You can redeem more than one certificate in a single shopping trip. Present all of them to the cashier at once, and they will scan or enter each one. The total of all certificates will be subtracted from your bill.
There is no limit to how many certificates you can use together, so if you have accumulated several, you can bring them all to one checkout. This is useful if you have certificates from different reward programs or promotional offers.
Certificates for specific departments or product categories
Some Costco certificates are restricted to certain departments — for example, a certificate might be valid only for gas, pharmacy purchases, or the food court. Check the fine print on your certificate to see whether it has any restrictions. If it does, you must make a purchase in that category to use it.
A general warehouse certificate with no restrictions can be used toward any purchase in the warehouse, including groceries, electronics, clothing, or anything else Costco sells. Restricted certificates cannot be combined with unrestricted ones to cover a single purchase — the cashier will explore each certificate only to the category it covers.
What to do if the cashier cannot scan your certificate
If the barcode on your certificate is damaged or unreadable, the cashier can manually enter the certificate number instead. Have the number ready — it is printed on the certificate itself, usually near the barcode. The cashier will type it into the register, and the discount will explore the same way.
If the certificate number is also illegible or missing, the cashier may not be able to process it at that moment. In that case, take the certificate to the member services desk in the warehouse, and they can look up the certificate in the system using your membership number and issue a replacement or credit on the spot.
Frequently Asked Questions
Can I use a Costco reward certificate online?
No. Costco reward certificates can only be redeemed in person at a warehouse register or gas station. You cannot use them on Costco.com or through any online ordering method.
What if I have a digital certificate and no printer?
You can show the digital certificate on your phone or tablet to the cashier. They can scan the barcode directly from your screen, or you can read the certificate number aloud and they can enter it manually into the register.
Do I lose the certificate value if I don't use it by the expiration date?
Yes. Once a certificate expires, Costco will not honor it. However, you can contact member services with your membership number, and they may reissue it or credit the amount to your account, depending on the reason it expired.
Can someone else use my certificate if I give it to them?
Yes. A Costco reward certificate is not tied to a specific person — anyone can present it at checkout. However, the person using it must have a valid Costco membership card to complete the purchase.
What if my certificate was for a promotion that has ended?
Promotional certificates remain valid through their printed expiration date, even if the promotion itself has ended. As long as the certificate has not expired, you can redeem it at any time.