Credit Card Fees for Contractors: Rates, Surcharges, Margin

Where the fee comes from

Visa explains that interchange fees move between the card-issuing bank and the merchant's bank, and that merchants don't pay interchange directly. You pay a merchant discount to your own financial institution, typically a percentage of each transaction. If you take cards through your field-service software, its payments service is the one charging you, and your rate is whatever its price list or your agreement says.

What field-service platforms charge

Rates as published on each vendor's page, read October 4, 2026:

Extras matter too. Jobber charges an additional 1% for instant payouts. Housecall Pro adds 1% for Instapay and $5 per active device per month for Tap to Pay. Service Fusion lists a $0.75 batch fee for each day with transactions, a $30.00 chargeback fee and a $59.95 monthly PCI non-compliance fee. QuickBooks charges 1.75% for instant deposits. ServiceTitan's payments page says fees depend on your specific agreement, and FieldEdge's says its rates are tailored to your transaction volume. Rates change; recheck the vendor's page before you choose.

How card fees hit a job's profit

Take the job cost calculator's example job: a $2,400 price that leaves $749.28 of net profit (31.22%) after materials, loaded labor, permit, disposal and overhead. Here is what the same job leaves after each fee:

The thinner your margin, the bigger the bite. At the example shop's labor rate of $125.20 per billable hour, built for a 10% net profit, each hour carries $12.52 of profit. A 2.99% fee on that hour is $3.74, or 29.9% of the profit, because the fee and the profit are both a percentage of the price. A card fee isn't part of your parts or labor cost, so it doesn't belong in your markup math; markup vs margin shows where it sits.

Surcharging under Visa's rules

Visa's U.S. Merchant Surcharge Q and A (version dated February 15, 2024, and still the FAQ linked from Visa's fees page on October 4, 2026) sets these conditions:

1. Notify your acquirer at least 30 days before you start.
2. Surcharge credit cards only. Debit and prepaid cards can't be surcharged, even when a debit cardholder picks "credit" at the terminal.
3. Keep the surcharge at or below your merchant discount rate for that card or 3%, whichever is lower.
4. Disclose it at the point of entry and the point of sale, and show it as a separate line on every receipt.
5. Send the surcharge in its own data field in the transaction; your acquirer sets that up.
6. If another card brand that costs you as much or more limits surcharging, you generally must surcharge Visa on the same terms.

Visa says it uses yearly mystery shopping by outside auditors, and that the acquirer of a merchant found surcharging improperly may be assessed an immediate $1,000 fine.

State law sits on top of the network rules. As of February 15, 2024, Visa understood that Connecticut, Maine, Massachusetts, Oklahoma and Puerto Rico prohibit surcharging and that Colorado, Minnesota, New Jersey and New York have their own requirements. Visa itself warns that this list may contain errors and is not legal advice, and state laws change, so check your state's current law. Mastercard, American Express and Discover set their own rules; Mastercard's page was not accessible to us for this guide, so ask your processor what each brand requires.

A surcharge often doesn't cover the whole fee. Say a customer pays the $2,400 job online with a Visa credit card at 2.99%. The cap is 2.99%, so the surcharge is $71.76 and the charge is $2,471.76. If your processor takes 2.99% of the full amount, the fee is $73.91 and you net $2,397.85, $2.15 short. At a 3.49% keyed rate the cap is 3%: a $72.00 surcharge, a $2,472.00 charge, an $86.27 fee, and you net $2,385.73, $14.27 short.

Cash discount instead of a surcharge

Visa's Q&A also allows a discount for paying another way, often called a cash discount. Your posted price must be the card price, or the card and cash prices side by side. The card total has to come from those posted prices, not from a fee added at the end, or Visa may treat it as a surcharge. Federal law, 15 U.S.C. 1693o-2(b)(2), bars card networks from stopping merchants from offering discounts for cash, checks, debit or credit cards, provided a card discount doesn't differ by issuer or network and, where federal or state law requires, the discount is offered to all buyers and clearly disclosed.

On an estimate, that looks like a $2,400.00 price with a line offering $2,328.00 for payment by check or cash, a 3% discount. Visa's rules page also describes a convenience fee, which must be a flat amount rather than a percentage, clearly disclosed, and only for paying through a channel other than your normal one.

Building the fee into your price

If you neither surcharge nor discount, price the fee in. The site's labor rate formula treats profit as a share of price, and the card fee works the same way: rate = break-even ÷ (1 − profit % − card fee share).

For the example shop (break-even $112.68 per billable hour, 10% net profit), if all revenue came in by card at 2.99%, the rate becomes $129.50 instead of $125.20. Check: $129.50 less $3.87 of fees and $12.95 of profit leaves $112.68. If 60% of revenue came in by card (an example share), the effective fee is 1.794% and the rate is $127.75. Run your own numbers in the labor rate calculator.

ACH at 1% costs less than half of any card rate in the table above, so it's worth offering on every large invoice.

This is general information. Card-network rules and state surcharge laws change, so confirm with your processor, and with an attorney in your state, before you add a surcharge.

Bottom line

Know your real rate for each way customers pay, decide whether you'll surcharge, discount or price it in, and put that choice on your estimates before the customer sees an invoice. Left unpriced, a 3% fee against a 10% profit takes close to a third of what you make on the job.