Places charge credit card fees because processing a card sale costs the business money, and since 2013 most merchants have been legally allowed to pass that cost to the customer instead of building it into their prices. The fee your bank’s card triggers on the merchant’s side typically runs between 1.5% and just over 3% of the sale, and on thin margins that adds up fast. Surcharging shifts the expense onto the person who chose plastic.
What the Merchant Is Actually Paying
Every card tap sets off a chain of transfers between your bank, the merchant’s bank, and the card network. The largest piece is the interchange fee, which the merchant’s bank pays to the bank that issued your card. Visa and Mastercard set these rates and publish them in long rate bulletins.1Mastercard. Mastercard Interchange Rates and Fees The money funds authorization systems, fraud monitoring, and the rewards programs cardholders enjoy.
Not every card costs the same to accept. A basic credit card and a premium rewards card, run through the same terminal for the same purchase, hit the merchant with very different fees. Mastercard’s 2025–2026 bulletin, for example, prices a Core-tier card at a supermarket at 1.45% plus 10 cents, while a World Elite card at the same register runs 2.10% plus 10 cents.2Mastercard. 2025-2026 US Region Interchange Bulletin The merchant can’t see which tier you’re carrying until after the sale, and can’t negotiate any of it with your issuing bank. Premium cards with generous cash back or travel points consistently carry the highest interchange rates, which means the merchant is effectively paying for your rewards.
Debit cards work differently. Under the Durbin Amendment, the Federal Reserve caps debit interchange for large banks at roughly 21 cents plus a small percentage of the sale.3Office of the Law Revision Counsel. 15 USC 1693o-2 – Reasonable Fees and Rules for Payment Card Transactions That flat structure is much cheaper for merchants, which is why you almost never see a surcharge on a debit purchase.
Why It’s Legal Now
For years, Visa and Mastercard contractually forbade merchants from surcharging as a condition of accepting their cards. That changed in January 2013 under a class action settlement valued at $7.25 billion, which resolved claims that the networks and banks had conspired to fix interchange fees and restrict merchant pricing. Once the settlement took effect, the network-level ban on surcharging lifted in every state that didn’t have its own law against it.
The Supreme Court touched the issue in 2017. In Expressions Hair Design v. Schneiderman, the Court considered a New York law that let merchants advertise a “cash discount” but not a credit card “surcharge” for the same price gap. The Court held that the law regulated speech, not just economic conduct, because it controlled how merchants described their prices.4U.S. Supreme Court. Expressions Hair Design v. Schneiderman, 581 U.S. 37 (2017) The Court did not strike the law down or declare surcharge bans unconstitutional; it sent the case back to the lower courts for First Amendment review. The practical effect was to weaken the standing of similar state bans.
States Where Surcharges Are Still Banned
Most states now allow credit card surcharges. As of late 2025, Connecticut, Maine, Massachusetts, and Puerto Rico maintain outright bans. New York’s prohibition remains on the books, but its enforceability has been uncertain since the Expressions Hair Design litigation.
Connecticut illustrates how these bans work. The state forbids charging extra for one payment method over another, but it expressly allows cash discounts. A store can post that listed prices drop 3% for cash, or display separate cash and credit prices side by side.5CT.gov. Credit Card Surcharge The math for you is the same either way, but in these states the legal difference between a surcharge and a discount is real.
State rules keep shifting. Florida, Texas, and California banned surcharges a decade ago and have since lifted those restrictions, so check your own state before assuming anything.
Rules the Business Has to Follow
A merchant can’t simply add a fee. Card network rules impose specific requirements, and violations are your grounds for pushing back.
You Have to Be Told Before You Pay
Merchants must post notice of the surcharge at the entrance and at the point of sale, and it must appear as a separate, labeled line item on your receipt with the dollar amount stated.6Visa. Surcharging Credit Cards – Q&A for Merchants Online sellers have to disclose at checkout. If nothing was posted in the store but a fee appeared on your receipt, the merchant broke the rules.
There’s a Ceiling
Visa caps the surcharge at the merchant’s actual cost of acceptance or 3%, whichever is lower.7Visa. U.S. Merchant Surcharge Q and A Mastercard’s ceiling is 4%.8Mastercard. What Merchant Surcharge Rules Mean to You Most businesses land between 1.5% and 3%. A 4% surcharge on a Visa transaction violates Visa’s rules even though Mastercard’s cap would permit it.
Debit Is Off Limits
Surcharges apply only to credit cards. Merchants cannot surcharge debit or prepaid card transactions, even when you choose “credit” on the terminal instead of entering a PIN.6Visa. Surcharging Credit Cards – Q&A for Merchants This is one of the most commonly broken rules. If a business surcharges your debit card, they’re violating their merchant agreement with the network.
A Surcharge Is Not a Convenience Fee
The two often get confused. A surcharge is triggered by paying with a credit card instead of another method. A convenience fee is triggered by using a non-standard payment channel, whatever card you use in it. A utility that normally takes payment by mail or on its website might add a convenience fee for a phone payment. Convenience fees are typically a flat dollar amount rather than a percentage, and network rules require that the fee apply equally to every payment type accepted through that channel, including debit and checks. A business can’t charge a convenience fee on credit cards only.
Federal agencies and colleges operate under separate rules that let them set maximum dollar limits on card acceptance, and the Durbin Amendment’s debit caps don’t apply to government-administered payment programs.3Office of the Law Revision Counsel. 15 USC 1693o-2 – Reasonable Fees and Rules for Payment Card Transactions That’s why paying taxes, tuition, or court fines by card usually carries a fee.
Sales Tax on the Surcharge
In many states, a credit card surcharge gets rolled into the taxable amount. Buy a $100 item with a 3% surcharge, and you may pay sales tax on $103 rather than $100, because the surcharge is treated as part of the total consideration for the sale. Other states exclude a separately stated surcharge from the tax base. The same purchase can produce slightly different tax totals depending on where you’re standing.
How to Avoid the Fee
Paying with a debit card is the easiest workaround. Since merchants can’t legally surcharge debit, switching from credit to debit at the terminal cuts the fee entirely. You give up whatever rewards the credit card would have earned, but a 3% surcharge wipes out even a strong cash-back rate.
Cash works, and some stores post an explicit cash discount that makes it the cheapest option. Ask before you pay. Mobile wallets like Apple Pay or Google Pay sometimes escape the surcharge as well, though this depends on how the merchant’s system is configured.
For small routine purchases, carrying some cash tends to beat the rewards math over time. For larger buys where the fee stings, a quick call ahead about payment options can tell you whether to bring a checkbook or shop somewhere that doesn’t surcharge.
How to Report a Violation
If a merchant overcharges, surcharges a debit card, hides the fee, or operates in a state that bans surcharging, you have two routes. You can complain directly to the card network. Visa offers an online form for reporting merchant surcharge violations, and Mastercard takes complaints through customer support. Neither will usually tell you what happened, but repeated complaints against the same merchant can bring fines or loss of card acceptance.
You can also contact your state attorney general or consumer protection office, particularly in a state where surcharges are prohibited. Connecticut’s Department of Consumer Protection, for one, tells consumers to report businesses that violate the ban.5CT.gov. Credit Card Surcharge