The honor all cards rule is a contractual obligation in every merchant agreement with Visa, Mastercard, and the other major payment networks: if you display a network’s logo, you must accept every valid card carrying that logo, no matter which bank issued it or where. You cannot refuse a card because it came from a small credit union, a foreign bank, or a competitor’s co-branded program. The rule has a few carve-outs, and it interacts with federal law on minimum purchase amounts and surcharging, but the core principle is non-discrimination among issuers within a brand you have agreed to accept.
What You Must Accept
If you take Visa, you take all Visa. A Visa card from a tiny credit union gets the same treatment as one from JPMorgan Chase. The same principle applies to Mastercard and other networks: acceptance is at the brand level, and issuer identity is not a valid reason to refuse.1Visa. Visa Core Rules and Visa Product and Service Rules
The rule also covers cards that might feel inconvenient. You cannot refuse a card because it was issued by a foreign bank, and you cannot refuse one because it carries a co-brand from a business you consider a competitor. Visa’s rules name both scenarios explicitly. A retailer that competes with Amazon still has to accept an Amazon-branded Visa. A restaurant in Miami still has to accept a Visa issued by a bank in Germany.1Visa. Visa Core Rules and Visa Product and Service Rules
Card reading matters too. If you do not have EMV chip terminals, you must support manual key entry as a fallback when a magnetic stripe fails. Merchants that do have functioning chip readers can decide whether to offer manual entry, but they are not required to.2Visa. Manual Key Entry and Card Verification Value 2 for U.S. Merchants
Limited Acceptance: Splitting Credit and Debit
The rule was once stricter. Before the early 2000s, merchants who wanted a network’s credit cards were forced to accept its debit cards as well, and vice versa. Antitrust litigation ended that bundling, and the current framework, called limited acceptance, lets you choose one product type without being forced into the other.3Hagens Berman. Visa Check/MasterMoney Antitrust Litigation $25B Settlement
You can decide to accept only Visa credit cards, or only Visa debit cards. What you cannot do is discriminate inside the category you chose. If you take Visa credit, you take all Visa credit, from every issuer. The same non-discrimination principle applies within debit.4Visa. 5 Important Visa Rules That Every Merchant Should Know
Prepaid cards sit in a separate bucket for some purposes. For U.S. merchants under Visa, the default is that you accept all categories of debit, credit, and prepaid unless you have qualified for limited acceptance. If you go the limited acceptance route, ask your acquirer how prepaid cards are classified in your specific agreement.1Visa. Visa Core Rules and Visa Product and Service Rules
If you use limited acceptance, signage is required. Notices must appear at the entrance and at the point of sale so a customer sees, before reaching the register, which card types you take. Missing signage can itself be treated as a violation of the merchant agreement.
Minimum Purchase Amounts
Federal law lets you set a minimum purchase for credit card transactions, capped at $10. The Dodd-Frank Act specifically bars payment networks from blocking merchants that set a minimum, provided the minimum does not exceed $10 and does not differ by issuer or network.5Office of the Law Revision Counsel. 15 U.S. Code 1693o-2 – Reasonable Fees and Rules for Payment Card Transactions A $5 minimum applied to every credit card is fine. A $5 minimum for Visa and $8 for Mastercard is not.
Debit cards are different. The federal provision authorizing minimums covers credit cards only, so merchants generally cannot impose a minimum purchase on debit transactions. This catches many small businesses that post a blanket “minimum $10 for cards” sign without separating credit from debit.
Both Visa and Mastercard reinforce uniformity in their own rules. Any minimum you set must apply across all credit card brands you accept, with no variation by issuer.6Mastercard. Setting a Minimum or Maximum Transaction Amount – Frequently Asked Questions7Visa. Minimum Transaction Amount on a Visa Credit Card
Surcharging Credit Cards
In most states you can add a surcharge to credit card transactions to offset processing costs. The rules are strict and the margin for error is thin. A misstep can bring network fines, state law penalties, or both.
Network Caps and Registration
Visa caps surcharges at 3% of the transaction or your actual cost of acceptance, whichever is lower.8Visa. U.S. Merchant Surcharge Q and A Mastercard allows up to 4%. Surcharges apply only to credit cards. You cannot surcharge debit or prepaid, even when a debit card is run as a signature transaction.9Visa. Merchant Surcharging Considerations and Requirements
Before you start, notify the network and your acquiring bank at least 30 days in advance. Mastercard requires registration through its online portal, with your business name, address, number of surcharging locations, and whether you plan to surcharge at the brand level or the product level.10Mastercard. Merchant Surcharge FAQ You can begin 30 days after confirmation. Skipping registration and simply adding a surcharge is a violation on its own.
Disclosure and Signage
Surcharges must be disclosed at the entrance and at the point of sale. Signage needs to say clearly that the business surcharges credit card purchases, that the surcharge does not exceed the merchant’s cost of acceptance, and that debit cards are not surcharged.11Visa. Sample Surcharge Disclosure Signage You can design your own signs as long as these elements are present, and you can combine disclosures for multiple brands on a single sign.
State Restrictions
Not every state allows surcharging. Connecticut, Maine, Massachusetts, and Puerto Rico prohibit it outright. New York has restrictions that function as a ban on how a surcharge can be presented to consumers. Some states that permit surcharging impose their own caps; Colorado limits surcharges to 2% or the merchant’s actual processing cost. Complying with Visa’s network rules does not guarantee compliance with state law, so a multi-state operator has to check each jurisdiction separately.11Visa. Sample Surcharge Disclosure Signage
Steering Customers Toward Other Payment Methods
The honor all cards rule requires you to accept a valid card when the customer insists, but it does not stop you from encouraging a different method. Steering is a recognized right within the payment industry. You can offer a cash discount, promote a lower-fee brand, or mention at the register that paying with cash saves money.12Federal Reserve Bank of Atlanta. Merchant Steering of Consumer Payment Choice
The line runs between incentivizing and penalizing. A discount for cash or a preferred card is fine. Charging a higher price to punish someone for using a particular card is a surcharge, and the surcharging rules apply. A “cash discount” that quietly inflates the card price above the advertised shelf price is an undisclosed surcharge in practice, and it carries the same obligations as an open one.
Merchants with rights secured through the interchange fee antitrust settlement may have additional options for brand-level and product-level surcharging, letting them treat Visa credit differently than Mastercard credit, or rewards cards differently than standard cards, within the applicable caps.13American Bar Association. In re Payment Card Interchange Fee and Merchant Discount Antitrust Litigation – Summary of the November 2025 Proposed Settlement
Penalties for Violating the Rule
Networks enforce their rules through structured escalation, and the numbers climb quickly. Under Visa’s framework:
- An initial violation triggers a $1,000 compliance case fee and a deadline to correct the problem or submit a remediation plan.
- Missing the first deadline brings a $25,000 non-compliance assessment for Tier 1 rules (core acceptance rules), or $5,000 for Tier 2 rules.
- Continued non-compliance escalates Tier 1 assessments by $25,000 per period, moving through $50,000, $75,000, $100,000, $125,000, and $150,000, and continues climbing each month until the violation is fixed.
These fines are assessed against the acquiring bank, which passes them through to the merchant, usually by deducting them from settlement funds.1Visa. Visa Core Rules and Visa Product and Service Rules
The worst outcome is termination. A merchant that persistently violates network rules can lose card processing entirely, and the business’s name goes onto the MATCH list (Member Alert to Control High-Risk Merchants), a database maintained by Mastercard and used across the industry. A MATCH listing lasts five years, and during that period most acquiring banks will decline an application for a new processing account.14Stripe. High Risk Merchant Lists For a consumer-facing business, that is close to being shut down.
Reporting a Merchant Who Refuses Your Card
If a merchant refuses a valid card, imposes an illegal minimum, or adds an undisclosed surcharge, you can report it to the network. Visa maintains an online form for consumers to flag issues including refusal of a valid card, improper surcharging, demands for supplemental identification, and unauthorized minimums or maximums.15Visa. Report a Purchase Issue Visa investigates but does not follow up with the person who filed the report.
If you want a specific transaction reversed, call the bank that issued your card. The number is on the back. Your issuer can start a chargeback or dispute. Reporting to the network addresses the merchant’s behavior going forward; contacting your issuer is how you get your money back.