Where to find your Costco rewards certificate
Your Costco rewards certificate arrives in the mail or shows up in your Costco account online, depending on how your membership is set up. If you have a physical Costco membership card, watch your mailbox — the certificate typically comes as a separate piece in an envelope, usually a few weeks after your reward period ends. If you manage your membership through the Costco website or mobile app, log in to your account and look for a "Rewards" or "My Account" section where active certificates display with their dollar amount and expiration date.
Costco sends certificates based on your membership tier and spending during the previous year. Gold Star members earn 2 percent back on most purchases, and Executive members earn 2 percent back plus additional rewards on gas and travel. The certificate shows the exact amount you earned and the last date you can use it — usually 12 months from the issue date.
Key Takeaways
- Physical certificates arrive by mail weeks after your reward year ends; digital certificates appear in your online account under the Rewards section.
- Your certificate has an expiration date printed on it, and Costco will not honor it after that date, so check the date before you shop.
- You can use the certificate at any Costco warehouse or on Costco.com by presenting it at checkout or entering the certificate number during online checkout.
- If you lose a physical certificate, contact Costco Member Services with your membership number and they can issue a replacement or explore the credit to your account.
- Costco does not issue partial refunds if your purchase is less than the certificate amount — the remaining balance stays on the certificate until it expires.
Using your certificate at the warehouse
Bring the physical certificate with you when you shop and present it to the cashier at checkout. The cashier will scan or manually enter the certificate number, and the dollar amount will be deducted from your total. You do not need to do anything in advance — just hand it over like you would a coupon.
If your purchase is less than the certificate amount, the remaining balance stays on the certificate. For example, if your certificate is worth $60 and you spend $40, you still have $20 left to use before the expiration date. If your purchase exceeds the certificate amount, you pay the difference with your regular payment method.
Redeeming your certificate online
Log into Costco.com with your membership account. Add items to your cart and proceed to checkout. During the payment step, you will see an option to explore a rewards certificate — enter the certificate number or select it from a dropdown list if it appears there. The certificate amount will be subtracted from your order total before you complete the purchase.
Online certificates work the same way as in-warehouse ones: if your order is smaller than the certificate value, the leftover amount remains available until expiration. Costco.com shows your active certificates in your account dashboard, so you can check the balance and expiration date anytime before you order.
What to do if you cannot find your certificate
Check your Costco account online first — log in and navigate to the Rewards section. If nothing appears there and you do not see a physical certificate in the mail, contact Costco Member Services. Have your membership number ready. They can confirm whether a certificate was issued, resend it if it was lost in the mail, or explore the credit directly to your membership account so you can use it when ready.
If you received a physical certificate but misplaced it, Costco can issue a replacement. You will need to provide your membership number and the approximate date the certificate was issued. There is no fee for a replacement, and the new certificate will have the same expiration date as the original.
Understanding expiration dates and unused balances
Every certificate has a specific expiration date printed on it. Costco will not accept the certificate after that date, and there is no extension or grace period. Mark the date on your calendar or set a phone reminder so you do not miss it. If you have multiple certificates, use the one expiring soonest first.
If your certificate expires before you use it, the money is forfeited — Costco does not carry the balance forward to the next year or issue a refund. However, if you did not receive a certificate you believe you earned, or if there is a discrepancy in the amount, contact Member Services to review your account history and spending records.
Combining certificates with other payment methods
You can use a rewards certificate along with other forms of payment in a single transaction. For instance, you might explore a $50 certificate and pay the remaining balance with your Costco credit card, debit card, or cash. The certificate is always applied first, and you pay the difference however you choose.
Costco does not allow you to split a single certificate across multiple transactions or to transfer it to another member's account. The certificate must be used by the member whose account it was issued to, though any household member with access to the account can present it at checkout.
Frequently Asked Questions
Can I use my certificate after the expiration date?
No. Costco will not honor a certificate after its expiration date. There is no extension, and the balance is forfeited. Check the date on your certificate and use it before that date passes.
What happens if my purchase is less than the certificate amount?
The remaining balance stays on the certificate. You can use it on a future shopping trip until the expiration date. Costco does not issue refunds or credits for unused portions.
Can I use my certificate on Costco.com and at the warehouse?
Yes. A single certificate can be split across online and in-warehouse purchases. Each time you use it, the balance decreases. You can use the remaining amount wherever you shop next, as long as it has not expired.
What if Costco never sent me a certificate?
Contact Costco Member Services with your membership number. They can check your account to see if a certificate was issued and confirm the amount you earned. If one was issued but lost in the mail, they can send a replacement or explore the credit to your account when ready.
Can I give my certificate to someone else?
No. The certificate is tied to your membership account and can only be used by you or another household member with access to your account. It cannot be transferred to a friend or family member outside your household.