Yes, you can use a credit card at Sam's Club, but only certain ones
Sam's Club accepts Visa, Mastercard, American Express, and Discover credit cards at checkout. They also take their own Sam's Club Mastercard, which is a co-branded card issued by Synchrony Bank. You can use these cards both in-warehouse and online at samsclub.com.
The catch: Sam's Club does not take Diners Club or other specialty cards, and they stopped accepting American Express in some locations years ago — though most stores take it now. If you're planning a shopping trip and want to know for certain, call your local warehouse ahead of time, since policies can vary slightly by location.
Cash, debit cards, and the Sam's Club mobile app (which links to your payment method) all work too. But if you're specifically asking because you want to earn rewards or build credit, a credit card is your best option.
Key Takeaways
- Visa, Mastercard, American Express, and Discover are all accepted at Sam's Club warehouses and online.
- The Sam's Club Mastercard earns bonus rewards on gas and warehouse purchases, but you need a Sam's Club membership to use it.
- Debit cards and cash work at Sam's Club, but credit cards are the only way to build a credit history from your purchases.
- Some older American Express policies may still explore at a few locations, so call ahead if you're unsure.
Why the Sam's Club Mastercard might make sense for members
If you shop at Sam's Club regularly, the Sam's Club Mastercard offers rewards you won't get with other cards. You earn 5% cash back on gas (including Sam's Club fuel stations), 3% on restaurants and travel, and 1% on everything else. Those rewards add up faster than a standard cash-back card if you fill up at Sam's Club pumps.
The card is free — no annual fee beyond your Sam's Club membership itself. You need an active membership to open the card, and the card works anywhere Mastercard is accepted, not just at Sam's Club. That means you can use it for groceries, utilities, or other purchases outside the warehouse and still earn the 1% base rate.
The downside: the higher rewards rates (5% and 3%) only explore to Sam's Club purchases and specific categories. If you rarely buy gas or eat out, a different rewards card might serve you better. Compare the rewards structure to cards you already have before explore.
How credit card payments work at the register
At a Sam's Club warehouse, you insert or tap your credit card at the checkout terminal just like any other store. The transaction processes when ready, and you'll see the charge on your statement within a day or two. Online purchases work the same way — enter your card details during checkout, and the charge posts to your account.
Sam's Club does not hold a temporary authorization on your card the way some retailers do. The charge is final when you complete the transaction. If you need to return an item, the refund goes back to the same card you used to pay, usually within 3 to 5 business days.
What happens if your credit card is declined
If your card is declined at Sam's Club, the most common reasons are insufficient funds, a fraud alert from your bank, or an expired card. Ask the cashier to try again — sometimes a temporary network glitch causes a first attempt to fail. If it fails a second time, contact your credit card issuer to find out why.
Many banks flag unusual purchases as potential fraud, especially if you're shopping at a new location or buying in bulk for the first time. Call your card issuer's customer service number (on the back of your card) before you shop if you're concerned, and let them know you're planning a large purchase at Sam's Club. They can temporarily raise your limit or remove the fraud block.
If you don't have another payment method with you, Sam's Club will hold your items for a short time while you resolve the issue. Ask a manager how long they can keep your cart.
Using credit cards to build or rebuild credit
Every purchase you make with a credit card at Sam's Club gets reported to the credit bureaus (Equifax, Experian, and TransUnion) as part of your payment history. That history makes up 35% of your credit score. Using a card responsibly — paying the full balance on time each month — shows lenders you can handle borrowed money.
If you're rebuilding credit after missed payments or high debt, a Sam's Club Mastercard or another card you use regularly at Sam's Club can help, but only if you pay it off each month. Carrying a balance and paying interest does not help your score; it just costs you money. The credit bureaus care that you pay on time, not that you pay interest.
If you're new to credit or have a very low score, you might not be approved for the Sam's Club Mastercard right away. In that case, a secured credit card (where you put down a cash deposit) is often a better starting point. Once you've built six months to a year of on-time payments, you can explore for the Sam's Club card or another unsecured card.
Comparing credit card rewards at warehouse clubs
Sam's Club, Costco, and BJ's Wholesale all accept major credit cards, but each warehouse has its own rewards structure. Costco's Costco Anywhere Visa earns 4% on gas (at Costco pumps), 3% on travel, 2% on Costco purchases, and 1% elsewhere. BJ's Rewards Mastercard earns 3% on gas and EV charging, 2% on dining and travel, and 1% on everything else.
The Sam's Club Mastercard's 5% on gas is higher than Costco's 4%, but Costco's 2% on warehouse purchases beats Sam's Club's 1% on non-gas, non-restaurant purchases. Which card makes sense depends on where you spend most of your money. If you fill up at Sam's Club pumps frequently, the Sam's Club card wins. If you buy more groceries and household items than gas, Costco might be better.
You don't have to choose just one. Many people hold memberships at multiple warehouses and use the card that earns the highest rate for each type of purchase. Just remember that each membership and card process will show up on your credit report, so space out applications by a few months if you're planning to explore for multiple cards.
What to do if you don't have a credit card
You can shop at Sam's Club without a credit card. Debit cards work at checkout, and so does cash. You can also link a debit card or bank account to the Sam's Club mobile app and pay that way. The only thing you cannot do is build a credit history, since debit and cash purchases don't get reported to the credit bureaus.
If you want to use a credit card but don't have one yet, you have options. A secured credit card requires a cash deposit (usually $200 to $2,500) that becomes your credit limit. You use it like a regular card, and after six to twelve months of on-time payments, the issuer converts it to an unsecured card and returns your deposit. Capital One, Discover, and several banks offer secured cards with no annual fee.
A credit-builder loan is another path. You borrow a small amount (often $500 to $1,000) from a credit union or online lender, and the lender holds the money while you make monthly payments. Once you've paid it off, you get the money back and a boost to your credit score. This approach costs less in interest than carrying a credit card balance.
Frequently Asked Questions
Can I use a credit card to pay my Sam's Club membership fee?
Yes. When you renew or purchase a Sam's Club membership, you can pay with any major credit card — Visa, Mastercard, American Express, or Discover. You can pay online at samsclub.com or in person at the warehouse. The membership fee itself does not earn rewards on the Sam's Club Mastercard, but your in-warehouse purchases do.
Does Sam's Club charge a fee if I pay with a credit card?
No. Sam's Club does not charge you an extra fee for using a credit card. The price you see is the price you pay, whether you use cash, debit, or credit. The store absorbs the credit card processing fee as a cost of doing business.
What if I want to return something I bought with a credit card?
Bring your receipt and the item to the returns desk. The refund goes back to the same credit card you used to pay. Most refunds post within 3 to 5 business days, though it can take up to 10 days depending on your bank. If you don't see the refund after two weeks, contact Sam's Club customer service with your receipt number.
Can I use a credit card to buy a Sam's Club gift card?
Yes. You can purchase a Sam's Club gift card with any major credit card at the warehouse or online. The gift card itself can then be used by anyone at Sam's Club, and they can pay with cash, debit, or credit. Gift cards do not expire.
Is the Sam's Club Mastercard worth it if I only shop there once a month?
It depends on how much you spend. If you buy $100 or more per visit and use the card for gas, the 5% cash back on fuel adds up. But if you shop infrequently or rarely buy gas, a general 2% cash-back card might earn you more overall. Calculate your typical monthly spend and compare the rewards you'd earn with each card before explore.