Legal — merchants' right to surcharge is explicitly protected
Montana law permits merchants to add a surcharge up to 3%, and specifically prevents card networks or banks from contractually prohibiting merchants from doing so. Montana also has no state sales tax.
Montana at a glance
| Credit card surcharge | Legal — merchants' right to surcharge is explicitly protected |
|---|---|
| Maximum surcharge | 3% |
| Debit & prepaid cards | Never — prohibited nationwide by federal rules and card networks, in every state |
| Cash discount / dual pricing | Legal — permitted in all 50 states with a compliant structure |
| State rule | Surcharging permitted; card networks/banks cannot prohibit it by contract |
| Disclosure | Must inform customers about the surcharge prior to processing the transaction. |
What Montana merchants need to know
Montana takes an unusually affirmative stance on surcharging: merchants can add up to 3%, and Montana law specifically prevents card networks or issuing banks from using their agreements to prohibit a merchant from surcharging. Most permissive states are simply silent on surcharging (no statute either way); Montana actively protects the right to do it.
Montana also has no state sales tax, which is a separate fact from surcharge law but one that shapes how Montana retailers think about itemized pricing generally — surcharge disclosure requirements apply the same way regardless.
The cash discount alternative
Wherever surcharge rules get complicated, dual pricing doesn't: posting a card price and offering a discount for cash is legal in all 50 states when it's structured correctly — the posted price must be the card price, with cash receiving a true discount. The economics match a surcharge; the compliance profile usually beats it.
With surcharging this clearly protected in Montana, the decision between surcharge and cash discount is purely a business preference — neither carries more legal risk than the other here.
Common questions
Is it legal to charge a credit card fee in Montana?
How is Montana's law different from most permissive states?
Can I surcharge debit cards in Montana?
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Surcharge rules in other states
Not legal advice. Surcharge and pricing laws change through legislation, court decisions, and enforcement positions. This page reflects our review as of July 2026 and is provided for general information. Confirm current requirements with your processor and qualified counsel before implementing any fee or dual-pricing program.