Two Numbers, One Question, No Clean Answer
Ask "what is the maximum credit card surcharge" and you will get two different answers depending on which source you land on. This page exists because most content on the topic quietly picks one number and presents it as settled. This one does not, because the underlying sources genuinely disagree, and presenting either figure as confirmed current policy would be a claim this research cannot back up.
The 4% Figure: Visa's Own May 2022 Guidance
Visa's own published compliance guidance, dated May 2022, caps merchant surcharges at 4%, even in cases where a merchant's discount rate on a transaction exceeds that percentage. This is a primary-source figure: it comes directly from Visa's own compliance material, as cited by ccsalespro.com's explainer on Visa compliance for dual pricing. As a card-network-published number, it carries real weight.
The 3% Figure: A 2026-Dated Secondary Source
A separate, more recently dated guide states that "Visa and Mastercard enforce a maximum surcharge cap of 3%" as of early 2026, according to strictlyzero.com's 2026 merchant compliance guide. This source is dated more recently than Visa's 2022 guidance, which raises the honest possibility that the cap changed between 2022 and 2026 and this figure reflects an update Visa's 2022 document predates. It is also possible this secondary source is imprecise, rounding, or conflating a different rule. This research could not confirm which explanation is correct.
Why This Genuinely Matters, Not Just as a Trivia Point
If you are advising a merchant, training an agent, or writing a script that states a specific surcharge cap as fact, citing the wrong number is not a cosmetic error. A merchant who surcharges at 4% believing that is the cap, when the actual current cap is 3%, is out of compliance with the card networks through no fault of their own but the advice they received. Getting this wrong has real downstream consequences for exactly the audience this content is written for.
What We Recommend Until This Is Resolved
Do not quote either 3% or 4% to a merchant or in a script as the confirmed current cap. Instead, direct the merchant (or your own compliance process) to check Visa and Mastercard's current operating rules directly, or confirm the current figure with the merchant's processor, who is required to stay current on card-network rules as part of their own compliance obligations. This page is a flag, not a final answer, and it is written that way on purpose.
The Rules That Are Not in Dispute
While the exact percentage cap is unresolved, several related surcharging rules are consistently documented and not in dispute: Visa requires merchants to notify Visa and their acquirer at least 30 days before beginning to surcharge, every receipt must show the surcharge as its own line item, and merchants may only surcharge credit cards, never debit or prepaid cards. Those rules apply regardless of which cap percentage turns out to be current. The full detail on that side of the requirement is in the companion receipt and disclosure guide.
| Figure | Source | Date | Status |
|---|---|---|---|
| 4% maximum surcharge | Visa's own published compliance guidance (via ccsalespro.com) | May 2022 | Primary card-network source, but older |
| 3% maximum surcharge | strictlyzero.com, 2026 merchant compliance guide | 2026 | More recently dated, but a secondary source |
This discrepancy is unresolved in this research. Do not treat either figure as confirmed current policy without checking Visa and Mastercard's own current operating rules directly.
What this means for you
- Visa's own May 2022 guidance states a 4% surcharge cap. A separate 2026-dated secondary source states 3%. This research could not resolve which is currently accurate.
- The discrepancy may reflect a genuine rule change between 2022 and 2026, or imprecision in the more recent secondary source. Both are plausible.
- Quoting either figure to a merchant as settled fact carries real compliance risk. Direct merchants to their processor or the card networks' current operating rules instead.
- The 30-day notice requirement, the line-item receipt rule, and the credit-only surcharge restriction are all separately confirmed and not affected by this discrepancy.
Sources
The external data in this guide draws on the sources below. Figures described in the text as estimates or industry triangulations are directional and are not attributed to a single dataset.
- ccsalespro.com, the case for dual pricing: understanding Visa compliance
- strictlyzero.com, is dual pricing legal in my state: the 2026 merchant compliance guide