Many shoppers wonder whether they can simply use any credit card at Costco for everyday purchases. The short answer is mostly yes, but with specific card rules that affect convenience, fees, and rewards.
Understanding which cards work, which foreign cards are accepted, and how payment authorization works can help you avoid surprises at the register or the gas pump.
| Card Network | Accepted at Costco? | Special Notes | Typical Fees for Costco Use |
|---|---|---|---|
| Visa | Yes (primary network) | All Visa brands accepted | No surcharge |
| Mastercard | No (not accepted in most locations) | Not accepted at registers and Costco Shop Cards | N/A |
| American Express | Yes (since 2016) | Amex preferred at many locations | No surcharge |
| Discover | Yes (limited locations) | Availability varies by region | No surcharge |
| Foreign Cards (e.g., UnionPay, Carte Bleu) | Sometimes at registers, rarely at gas pumps | Check local store policy and dynamic currency conversion | Possible cross-border fees |
Costco Accepts Visa As Its Exclusive Network Partner
Costco has a long-standing partnership with Visa, which means every Costco location in the United States accepts Visa credit and debit cards. This includes traditional Visa, as well as co-branded Visa cards issued by banks. Because Visa is the only card network that Costco accepts for in-store purchases, you cannot use Mastercard directly at the register or at the Costco gas pumps.
The agreement with Visa ensures consistent payment processing and helps streamline checkout, but it also means that cardholders whose banks only issue Mastercard cannot use that card for Costco transactions. If you rely on a Mastercard for everyday spending, you will need a different payment method for Costco.
For most shoppers, using a Visa card is straightforward, and many Visa products offer rewards such as cash back, points, or travel benefits that can stack with Costco membership savings. Just confirm with your bank that your Visa is activated for larger in-store purchases and that your card limit is sufficient.
American Express And Discover Also Work, With Limitations
In addition to Visa, Costco accepts American Express and Discover cards at most U.S. locations. American Express cards have been widely accepted since Costco began partnering with them in 2016, giving Amex cardholders another option at the register. Discover coverage is more limited and can vary by region, so it is best to check with your local store or try a small test purchase if you plan to use Discover.
While both Amex and Discover are accepted, the range of eligible cards may differ based on the specific product. For example, some store-branded Amex cards might not be supported, and certain commercial or business cards could face processing restrictions. Always confirm with your card issuer and the specific Costco location if you plan to use these networks.
Because American Express and Discover often have higher merchant fees than Visa, some smaller vendors choose not to accept them, but Costco has negotiated to support them for members. No surcharges are applied to these cards at Costco, but standard processing times and authorization holds still apply.
Members Card And Costco Shop Card Are Store Payment Options
Beyond traditional credit card networks, Costco offers its own payment options, such as the Costco Member Card and the Costco Shop Card. The Member Card functions as both a membership credential and a store charge card, and it is accepted everywhere Costco takes payment. The Shop Card, which is a store-branded credit card, can only be used at Costco locations and is not usable elsewhere.
These store cards typically come with special financing offers, such as no-interest periods for larger purchases, which can be attractive if you are buying appliances, tires, or electronics from Costco. However, if you carry a balance past the promotional period, interest charges can offset savings, so read the terms carefully.
Because these cards are tied to membership and store accounts, they are easy to track for budgeting and returns. They also make it simple to split payments between card types in some cases, though policies vary by location and purchase type.
International And Foreign Cards Face Restrictions
If you are traveling or using a foreign-issued card, acceptance is less predictable at Costco. Some locations may accept UnionPay, Carte Bleu, or other regional networks at the register, but acceptance at the gas pumps is rare. Dynamic currency conversion may also apply, which can result in higher costs due to unfavorable exchange rates.
Because Costco primarily processes transactions through Visa in the United States, foreign cards that route through other networks may be declined at point of sale. It is a good idea to contact your bank before traveling and to have an accepted card as a backup.
For frequent international travelers, a Visa or Amex that works abroad with no foreign transaction fees is generally the safest option for use at Costco locations outside your home region.
Key Takeaways For Using Payment Cards At Costco
- Costco accepts Visa as its primary card network across the United States.
- American Express is widely accepted, while Discover availability varies by region.
- Mastercard and other non-Visa networks are not accepted for in-store or gas purchases.
- Foreign cards may work at registers but are unreliable at pumps and may incur cross-border fees.
- Costco Member Cards and Shop Cards provide store-specific payment options with possible financing benefits.
FAQ
Reader questions
Can I use my Mastercard at Costco if my bank only issues that brand?
No, Costco does not accept Mastercard for in-store purchases or at the gas pumps. You will need to use a Visa, American Express, or Discover card, or a Costco-accepted store card, to pay at checkout.
Will Costco accept my contactless or mobile wallet payment?
Yes, most Costco locations accept contactless payments such as Apple Pay, Google Pay, and Samsung Pay, as long as the underlying card is a Visa, Amex, or Discover supported by Costco.
What happens if I try to use a Mastercard at the gas pump?
Costco gas stations only accept Visa and, at select locations, American Express and Discover. If you attempt to use a Mastercard at the pump, the transaction will be declined, and you will need to use a different payment method.
Can I pay with multiple cards in a single Costco transaction?
Split payments are generally not permitted at Costco registers. You must choose one accepted card or store payment method for the full amount. Gift cards and Shop Cards may sometimes be used in combination with a credit card, depending on location policy.