General information only, last reviewed October 25, 2026. Full notice and dates to watch at the end of the page. A date on this page has passed. Check the current rule at the source before you rely on it. Dates to watch
Card fees are the second-largest operating expense in convenience retail, behind only labor. NACS puts the industry's card-fee bill at $21 billion for 2024. The fee is a percentage of the sale, so it grows with the fuel price, while the fuel margin stays fixed in cents per gallon. That mismatch is the whole problem.
The math on one fill-up
Take a 12-gallon fill at $3.50 per gallon, a $42 sale. The average swipe fee on Visa and Mastercard credit cards reached 2.35% of the transaction in 2024, per Nilson Report figures cited by NACS. Run the three common tenders through that sale:
- Credit card: $42 × 2.35% ≈ $0.99, about 8.2 cents per gallon.
- Regulated debit: capped at $0.21 + 0.05%, plus a 1-cent fraud-prevention adjustment, under the Durbin Amendment, about $0.24, or 2.0 cents per gallon.
- Cash: zero processing cost.
NACS reports retail fuel gross margins have run above 35 cents per gallon in recent years. At that margin, the credit fee in this example takes nearly a quarter of the gross on every gallon before rent, labor, or shrink. The same fill paid with debit gives back over 6 cents per gallon. That spread is why tender mix matters as much as street price.
What interchange fees are
Interchange fees are set by the card networks and paid to the card-issuing bank on each transaction. They are the largest piece of what a merchant pays to accept a card. Visa's published consumer credit rate for fuel has been 1.15% plus $0.25, capped at $1.10 per transaction. Processors add their own markup on top, which pushes the all-in cost to roughly 1.5% to 3%. Networks adjust these schedules, so confirm current rates with your processor. Debit from large banks is the exception: the Durbin Amendment caps its interchange at 21 cents plus 0.05% of the sale, plus 1 cent for banks that meet the Federal Reserve's fraud-prevention standards.
How operators manage them
- Post two-tier cash and credit pricing, following your state's sign rules, so the customers who choose credit carry the fee.
- Steer volume to debit and pay-by-bank apps, where the Durbin cap or ACH rails cut the per-gallon fee to a fraction of credit.
- Audit the processor statement and negotiate the markup above interchange, since interchange itself is non-negotiable.
Why it changes your real margin
Card fees come out of the fuel margin, so your true margin is only clear once you subtract them. In the fill-up above, a posted 35-cent margin is a 27-cent margin on credit sales. Price off the gross figure and you overstate what you keep on most transactions. FastDragon C-store nets processing costs against fuel sales so the margin you price on is the one you actually bank. Net margin per gallon belongs next to the other KPIs that run a station, and it pairs with knowing what else is inside the price of a gallon.
What people ask
Is it legal for a gas station to charge more for credit cards?
Federal law bars card issuers and networks from stopping a merchant from offering a cash discount, and two-tier cash and credit pricing is common at the pump. States set the posting rules: Minnesota, for one, requires the sign to say "cash" when a posted price is for cash only. Adding a surcharge at checkout is different: a few states, including Connecticut and Massachusetts, still prohibit credit card surcharges. Visa and Mastercard require advance notice and clear disclosure, cap the amount, and bar surcharges on debit and prepaid cards. Check your state law and your processor agreement before switching models.
Why does the pump put a $175 hold on my card?
The pump authorizes your card before it knows the final sale amount, so it requests a temporary hold. Under Visa's current rules a standard pump check counts as a $175 hold, and a station may ask for up to $500 ($1,000 on a Visa fleet card). A station can choose a lower amount. Visa requires the station to send the final amount within 2 hours and, since April 2026, the card's bank to adjust the hold as soon as it arrives.
Do rewards credit cards cost the station more to accept?
Usually inside the store, less so at the pump. In most merchant categories, premium and rewards cards sit in higher interchange tiers than basic cards, so the points the cardholder earns are funded in part by the merchant. Visa's current fuel rate is the same for every consumer credit card. Network honor-all-cards rules generally stop a station from refusing a specific card within a brand it accepts, so the station absorbs whatever mix of cards drives up.
How do gas station apps cut card fees?
Most chain apps with a fuel discount run on pay-by-bank rails: the customer links a checking account and the payment moves by ACH, skipping the card networks entirely. ACH costs the merchant pennies per transaction. Card fees run as a percentage of the sale. That fee gap is what funds the per-gallon discount the app advertises.
Sources: cash discounts under 15 U.S.C. 1666f and 15 U.S.C. 1693o-2; sign rules in Minn. Stat. 239.751; surcharge bans in Conn. Gen. Stat. 42-133ff and Mass. Gen. Laws ch. 140D, sec. 28A; surcharge, pump hold, and honor-all-cards rules in the Visa Rules (April 2026) and Mastercard surcharge rules; the fuel rate in Visa USA Interchange Reimbursement Fees (October 2026); Visa's statement on preliminary approval of the merchant settlement; the debit cap in 12 CFR 235.3 and 235.4; industry fee figures from NACS. As of October 2026.