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If you're a Costco member, knowing which credit cards work at checkout—and which ones don't—matters. Costco's payment acceptance rules are stricter than most retailers, and they've changed over time. Understanding what's accepted now, and why those rules exist, helps you plan your shopping trips and maximize rewards if you use a Costco card.
Costco doesn't accept all credit cards. The warehouse accepts only Visa cards and Costco's own co-branded credit card. American Express, Discover, and Mastercard are not accepted at Costco locations (though Mastercard is accepted at Costco.com for online purchases).
This wasn't always the case. Costco had an exclusive agreement with American Express for years before switching to Visa in 2016. That shift reflected changes in the payment processing landscape and Costco's negotiating priorities.
Costco's selective approach means:
| Payment Type | At Warehouse | Online |
|---|---|---|
| Visa credit cards | ✓ | ✓ |
| Costco Visa card | ✓ | ✓ |
| Debit cards | ✓ | ✓ |
| Cash | ✓ | ✗ |
| American Express | ✗ | ✗ |
| Discover | ✗ | ✗ |
| Mastercard | ✗ | ✓ |
| Digital wallets (Apple Pay, Google Pay, etc.) | ✓* | ✓ |
*Digital wallets work at warehouse locations if they're linked to an accepted card type.
The Costco Anywhere Visa Card by Citi is a dedicated option designed for frequent Costco shoppers. It's a Visa card, so it's accepted everywhere Visa is—not just at Costco. Some members use it primarily to earn rewards on Costco purchases, while others value having a Visa for the warehouse and a secondary card for broader use elsewhere.
Like any co-branded card, the benefits and costs depend on your shopping habits and how you value the rewards structure. You'll want to evaluate whether the card's earning rates and annual fee align with your actual spending.
Your membership status: Members can use any accepted Visa. Non-members can shop but face the same payment restrictions.
Where you shop: The warehouse and Costco.com have slightly different rules. If you shop online frequently, note that Mastercard works online but not in-warehouse.
Your existing cards: If you carry multiple credit cards, check which are Visa. You may already have an accepted option.
Your rewards priorities: Some cardholders prefer a generic Visa for flexibility; others want the Costco co-branded card for category bonuses at Costco locations.
Check your wallet before your next Costco trip. If your primary credit card isn't a Visa, you'll need to bring an alternative payment method—whether that's another card, debit card, or cash.
If you're considering the Costco co-branded card, compare its benefits and fees against your current rewards structure. The right card depends on how often you shop at Costco, what you typically buy, and how you value cash-back or points relative to the annual fee.
For online shopping, remember that Mastercard works at Costco.com even though it's rejected at warehouses—useful if that's your preferred card network.
