Your Walmart Capital One card works at most places that take Mastercard, not just Walmart

The Walmart Capital One card is a Mastercard, which means you can use it anywhere Mastercard is accepted — not only at Walmart stores and Walmart.com. This includes grocery stores, gas stations, restaurants, online retailers, and thousands of other merchants worldwide. The card functions like any other Mastercard credit card when you swipe, insert, or tap it at checkout.

The main difference between using your card at Walmart versus elsewhere is the rewards structure. You earn higher cash back at Walmart and on Walmart.com purchases than you do at other merchants. Outside Walmart, you still earn cash back, but at a lower rate. The card itself carries no restrictions on where you can use it.

Key Takeaways

  • Your Walmart Capital One card is a Mastercard and works anywhere Mastercard is accepted, including gas stations, restaurants, and online retailers.
  • You earn higher cash back rates on purchases at Walmart stores and Walmart.com than on purchases elsewhere.
  • The card works internationally at merchants that accept Mastercard, though foreign transaction fees may explore.
  • If a merchant does not accept Mastercard, they will not accept your Walmart Capital One card, even if they accept other credit cards.

Cash back rates at Walmart versus other places

The cash back you earn depends on where you use the card. At Walmart stores and Walmart.com, you earn a higher percentage back on your purchases. At all other merchants — restaurants, gas stations, pharmacies, online stores — you earn a lower flat rate. Both rates are paid as cash back that appears as a credit on your statement.

The exact rates change based on which version of the Walmart Capital One card you hold. Check your cardholder agreement or log into your Capital One account to see the current rates for your specific card. Capital One publishes these rates upfront, and they do not vary by merchant type outside of Walmart.

Using your card at gas stations and online retailers

Gas stations that accept Mastercard will accept your Walmart Capital One card at the pump or inside the station. You can also use it at online retailers like Amazon, Target, Best Buy, and any other website that takes Mastercard. The card works the same way as any other credit card — you enter the card number, expiration date, and CVV at checkout.

Some online retailers ask which card network you prefer if you have multiple cards saved. You can select Mastercard, and your Walmart Capital One card will process the payment. You will earn the standard cash back rate (not the Walmart rate) on these purchases.

International use and foreign transaction fees

You can use your Walmart Capital One card at merchants outside the United States that accept Mastercard. However, Capital One charges a foreign transaction fee on purchases made in foreign currencies or outside the U.S. This fee is typically a percentage of the purchase amount and appears on your statement.

Before traveling, contact Capital One to let them know you will be using the card abroad. This helps prevent fraud blocks that might decline legitimate purchases. Ask about the current foreign transaction fee rate so you know what to expect on your bill.

What happens when a merchant does not accept Mastercard

If a store or website does not accept Mastercard, your Walmart Capital One card will be declined. This is rare in the United States, but it does happen. Some small merchants, certain government agencies, and a few online platforms accept only Visa, American Express, or Discover.

If you encounter a merchant that does not take Mastercard, you will need to use a different payment method — another credit card, debit card, or cash. There is no way to force a merchant to accept Mastercard if they have chosen not to. You can ask the merchant whether they plan to accept Mastercard in the future, but they are not required to.

Using the card for cash advances and balance transfers

Your Walmart Capital One card can be used to withdraw cash at ATMs that display the Mastercard or Cirrus logo. However, cash advances come with a fee and a higher interest rate than regular purchases. Capital One charges an upfront fee (usually a percentage of the amount withdrawn) plus interest that begins accruing when ready.

You can also transfer a balance from another credit card to your Walmart Capital One card, though this also triggers a fee and may come with a promotional interest rate for a limited time. Both cash advances and balance transfers are separate transactions from regular purchases and have their own terms. Review your cardholder agreement for the current fees and rates.

Contactless and mobile payment options

Many merchants now accept contactless payments through mobile wallets like Apple Pay, Google Pay, and Samsung Pay. You can add your Walmart Capital One card to these wallets and tap your phone or watch at checkout instead of handing over the physical card. The transaction processes as a Mastercard payment, and you earn the same cash back as you would with the physical card.

Contactless payments work at any merchant that has a contactless reader — look for the wave symbol at the checkout terminal. This method is faster than inserting or swiping the card and offers the same fraud protections. If you lose your phone, you can remove the card from your mobile wallet through the wallet app or by contacting Capital One.

Frequently Asked Questions

Can I use my Walmart Capital One card at Target or other retailers?

Yes. Your card is a Mastercard and works at any merchant that accepts Mastercard, including Target, Best Buy, Costco, and other retailers. You will earn the standard cash back rate, not the higher Walmart rate, on these purchases.

What if my card is declined at a merchant that says they take Mastercard?

Contact Capital One when ready. The decline could be due to fraud protection, an expired card, reaching your credit limit, or a temporary processing error. Capital One can tell you why the card was declined and may be able to unblock it on the spot if it was a security hold.

Do I earn cash back on every purchase outside Walmart?

Yes, you earn cash back on all purchases made with your Walmart Capital One card, whether at Walmart or elsewhere. The rate is lower outside Walmart, but you still earn something on every transaction. Cash advances and balance transfers may have different terms — check your agreement.

Can I use my Walmart Capital One card in Canada or Mexico?

Yes, you can use it at merchants in Canada and Mexico that accept Mastercard. However, Capital One charges a foreign transaction fee on these purchases. The fee applies to any transaction in a foreign currency or outside the United States.

What should I do if a store only accepts Visa or American Express?

You will need to use a different payment method. Your Walmart Capital One card is a Mastercard and cannot be used at merchants that do not accept Mastercard. Consider carrying a backup card or asking the merchant if they plan to accept Mastercard in the future.