The short answer
A surcharge program is the practice of adding a disclosed fee to credit-card transactions to offset the merchant's processing cost. It became broadly legal in the U.S. after Visa and Mastercard's 2013 class-action settlements, but remains heavily regulated: capped percentages, state-level bans, network-notification requirements, debit-card prohibition, and strict disclosure at every step. Compared to cash discounting and dual pricing, surcharging has the most compliance surface area — and the most opportunities to get it wrong.
The rules at a glance
- Cap: 3% or your actual cost of acceptance, whichever is lower, on Visa. Mastercard caps at 4%. Amex matches the Visa/MC rate at your discretion.
- Credit only: Never on debit cards — this is a hard federal and network rule. Regulated debit under Durbin simply cannot be surcharged.
- 30-day notification: Merchants must notify Visa and Mastercard 30 days before starting to surcharge. Online forms on each network's website.
- Signage: At the point of entry to the store AND at the point of sale.
- Receipts: Must show surcharge as a separate line item, not rolled into price.
- Uniform rate: Same surcharge percentage across all card brands you surcharge on — you can't surcharge Discover more than Visa to punish them.
States where surcharging is restricted or banned
- Connecticut, Massachusetts, Maine: Outright prohibition of credit-card surcharges.
- New York: Allowed but with specific disclosure-language requirements (Expressions Hair Design v. Schneiderman 2017 and follow-ups).
- Colorado, Kansas: Previously banned, now allowed post-court-decisions but with caps (Colorado caps at 2%).
Rules shift — always verify state-specific rules before enabling surcharging in any new jurisdiction.
What operators need to know
- Debit-card hard stop. Processing a surcharge on a debit transaction — even accidentally — is a violation. Your gateway must be configured to detect debit BINs (via BIN lookup) and waive the surcharge automatically.
- Signage gets audited. Processor risk teams drive past / visit surcharging merchants. Missing entry signage is the #1 audit failure.
- E-commerce is easier to operate compliantly than card-present — disclosure can be rendered on every page, and BIN-detection prevents debit surcharging. Conversion hit is real (10-20%), though.
- 3% feels small, 4% feels adversarial. Consumer perception tips negative around 3.5-4%. Price the surcharge at your actual cost, not "up to the cap."
- Multi-brand, multi-state operators need jurisdiction-aware surcharging — surcharge a Connecticut customer and you've violated state law. Routing should inspect billing state and waive the surcharge dynamically.