Can a Traffic Control Company Add a Credit Card Fee to Invoices?

Card processing costs money, and on a large invoice the fee is real. So the question comes up in every traffic control office that takes cards: can we pass the fee on to the customer?

Read this first. This article explains how card-network surcharge rules and state laws generally work and points to the primary sources. It does not tell you whether a surcharge is allowed for your business. Network rules, state laws and court decisions change, and they apply differently depending on where you are and how you sell. Before you add a fee, confirm the current rules with your payment processor and a lawyer licensed in your state.

Three layers decide the answer

A card fee has to clear three separate sets of rules, and passing one does not mean passing the others.

1. The card networks. Visa, Mastercard, American Express and Discover each publish rules for merchants that accept their cards. Your processor agreement binds you to them.
2. State law. Some states prohibit surcharges, some allow them with conditions, and some say nothing.
3. Your contracts. A customer's contract, a master service agreement or a public agency's terms may say what you can bill. A fee the networks and the state allow can still be a fee your customer never agreed to.

What Visa's own rules say

Visa publishes a merchant Q&A on surcharging. Its current version (Visa U.S. Merchant Surcharge Q and A) says that a U.S. merchant who intends to surcharge must:

• Notify its acquirer at least 30 days before it starts surcharging. Visa's regulations and fees page repeats the 30-day notice.
• Limit surcharging to credit cards. The Q&A says debit cards and prepaid cards cannot be surcharged, and that a debit card stays a debit card even when the cardholder picks "credit" on a terminal.
• Cap the amount. The Q&A says the surcharge may not exceed the merchant discount rate for that card or 3%, whichever is lower.
• Disclose it. The merchant must alert customers at the point of entry, at the point of sale, and on every receipt, with the surcharge shown as a separate amount.

The Q&A also addresses state law, with care. It says that to answer whether state or federal laws prohibit surcharging, "please consult a lawyer or other qualified legal professional," and it lists states Visa understood to prohibit or restrict surcharging as of February 2024, with an explicit warning that the list may contain errors and should not be relied on as legal advice. That warning is worth taking literally. A network's summary of state law is a starting point for your lawyer, not a substitute.

Mastercard, American Express and Discover publish their own merchant rules. Do not assume they match Visa's. If you accept several brands, read each network's current rules or ask your processor to walk you through them.

What a state law can look like

State surcharge laws are written in different ways. Two examples show the range.

Massachusetts. Its statute says plainly that "no seller in any sales transaction may impose a surcharge on a cardholder who elects to use a credit card in lieu of payment by cash, check or similar means" (Mass. Gen. Laws ch. 140D, § 28A). The same section bars card issuers from prohibiting a seller from offering a discount for paying by cash or check.

Texas. Here the picture is less simple, which is a good reason to read the state's own explanation. The Texas State Law Library's page on credit card surcharges (Texas State Law Library, Credit Card Surcharges) says:

• Two sections of the Texas Business and Commerce Code, 604A.0021 and 604A.002, prohibit a seller from charging a fee when a buyer pays by credit card or debit card.
• In 2018, a federal district court in Rowell v. Paxton ruled the credit card surcharge law unconstitutional and enjoined the State from enforcing parts of it. The library notes the case addressed credit cards, not debit cards.
• A Texas Attorney General opinion, KP-0257, says the statute "remains enforceable in some contexts."
• The library's own summary is that "it is unclear if the Texas law against credit card fees is enforceable," and that "an attorney can help you determine if this law can be enforced in a specific circumstance."

That is the honest state of it as the library describes it. If you do business in Texas, that page and a Texas lawyer are where the answer comes from, not a blog post or a processor's sales sheet.

Surcharge, cash discount, or neither

There is more than one way to recover the cost of card acceptance, and each has its own rules.

A surcharge adds a fee when the customer pays by card. It is the option the network rules and state laws above are mostly written about.

A cash discount lowers the price when the customer pays some other way. Visa's Q&A says a merchant offering a cash discount must display either the card price alone or the card and cash prices side by side, and that a card total reached by adding a fee for paying by card can be treated as a surcharge and fall under Visa's surcharge rules. The Texas State Law Library notes that cash discounts are not surcharges under the Texas statute's definition. How a discount must be shown is still a question for your processor and your lawyer.

Neither. Many companies simply price card acceptance into their rates, the way they price fuel and insurance, and take cards without a fee. That has the advantage of needing no notice, no signage and no legal opinion. Our post on taking card payments for barricade rentals covers what card acceptance costs and where it pays for itself.

Why an invoice is different from a counter sale

Most surcharge rules were written with a checkout in mind: the customer picks a payment method, then pays. A traffic control invoice works the other way around. You send it before you know how the customer will pay. It may be paid by check, by bank transfer, through a payment link, or partly each way.

That creates a practical problem. A fee printed on an invoice is part of that invoice. If the customer pays by check, the fee is still on it unless someone takes it off. If the customer pays the link with a debit card, the fee was charged on a card type the network rules above may not allow. Before you add a fee to invoices, ask your processor and your lawyer how they expect it to work when you do not know the payment method in advance.

Questions to ask before you add a fee

Ask your processor:

• Do you require advance notice before I start a surcharge, and how do I give it?
• Can your checkout tell a credit card from a debit or prepaid card before the charge?
• What disclosures do you require on the payment page and the receipt?
• What is my actual cost of acceptance by card type, so any fee stays within the cap?

Ask your lawyer:

• Does the state where I do business restrict surcharges or cash discounts?
• Does it matter where the customer is, or where the job is?
• How do court decisions and attorney general opinions affect the statute for a business like mine?

Ask yourself, and check your contracts:

• Do my customer agreements or public contracts allow a fee?
• Will a fee cost me more in disputes and short payments than it recovers? Our post on getting paid faster covers why anything that makes an invoice harder to approve slows payment.

How Traffic OS handles card payments

Traffic OS does not add a card fee automatically, and it does not decide whether one is allowed.

• Payment links. Invoices can carry a Square, Stripe or QuickBooks payment link, and the customer can also pay from the customer portal.
• A fee is your line. If your business decides to charge a card fee, your team adds it as a line on the invoice. Like any line, it is part of the invoice total whatever the customer pays with, so add it only where you mean to.
• Payments recorded by method. Card, check, cash, ACH and other payments are recorded with their method, and partial payments are supported. The payments-by-method report shows how your customers actually pay, which is the number to bring to the conversation about whether a fee is worth it.

The full list of payment features is on the features page.

The short version

Whether you can add a card fee depends on the networks, the state and your contracts, and all three can change. Visa's own rules limit surcharges to credit cards, require 30 days' notice to your acquirer, cap the amount and require disclosure. Some states prohibit surcharges outright; in Texas, the State Law Library says the enforceability of the credit card statute is unclear and recommends an attorney. Get the answer for your business from your processor and a lawyer licensed in your state, in writing, before the first fee goes on an invoice.