Credit card processing for contractors: a field guide

Credit card processing for contractors is about getting paid at every stage of a job without losing a slice of each invoice to fees or disputes. Customers expect to pay by card, from the deposit to the final walkthrough. The skill is choosing how to take each payment: in person with a mobile reader when you're on site, by invoice and payment link when you're not, and with paperwork that holds up if a customer disputes a charge months later.

If you run a remodeling crew, a roofing company, or an HVAC, plumbing, or electrical shop, this is the setup we'd recommend, with the math behind it and the deposit rules that catch contractors off guard.

How do contractors get paid by card?

A typical job has several payment moments, and each one has a best way to take the card:

Our mobile payments setup covers tap to pay and mobile card readers, and our virtual terminal handles phone payments, invoices, payment links, and recurring billing. For how the pieces fit together in the trades, see our page on home services payment processing.

One habit to drop: writing card numbers on a work order to run later. A payment link lets the customer enter their own card details, and it keeps card numbers out of your truck and off your paperwork.

Why do keyed and card-not-present payments cost more?

Because the card networks set higher interchange rates when the card isn't physically there. Interchange is set by the networks, not by your processor, and it varies with how the card is taken. Here's how Visa prices the same consumer credit cards on its April 18, 2026 interchange schedule:

Say you're a remodeler in Phoenix, and the final $6,000 payment on a kitchen job comes in on a Visa Signature card. Tapped or inserted on site, interchange is 1.65% of $6,000 plus $0.10, or $99.10. Keyed in from the office the next day, it's 2.05% plus $0.10, or $123.10. Same card, same customer, $24.00 more. Ten jobs like that a month is $240, before your processor's markup.

The gap is mostly a credit card problem. Debit cards from banks with $10 billion or more in assets fall under Regulation II, which caps their interchange at 21 cents plus 0.05% of the sale, plus up to 1 cent for fraud prevention, however the card is taken (Federal Reserve).

Payment links count as card-not-present too, because the customer types the card into a web page. They're still the right tool when you're not on site. The point is simple: when you and the card are in the same room, take it in person.

How do you protect deposits from chargebacks?

Deposits are where contractors get hurt. A customer pays a deposit in March for a job scheduled for August, the start date slips, and the customer calls their card issuer. Dispute windows are long. Mastercard's chargeback guide, for example, allows some service disputes to be filed within 120 calendar days from when the services ceased, with an outer limit of 540 days.

Three sets of rules shape what you can collect up front.

The FTC Cooling-Off Rule

If you sign a customer at their home, the federal Cooling-Off Rule gives them until midnight of the third business day to cancel, and any payments must be returned within ten business days after you receive their cancellation notice. It covers sales of $25 or more made at the buyer's home. The FTC's consumer guide lists what isn't covered, including sales needed to meet an emergency and work the customer asked you to come do as a repair or maintenance call. Anything you sell beyond that repair request is covered.

In practice, a remodel sold at the kitchen table means the deposit is refundable for three business days. Give the required cancellation notice, and don't spend the deposit until the window closes.

State deposit limits

Some states cap or condition deposits on residential work:

• In California, the down payment on a home improvement job can't be more than $1,000 or 10% of the contract price, whichever is less (CSLB). The board's consumer guide also tells homeowners to pay only as work is completed.
• In Florida, a contractor who takes more than 10% of the contract price as an initial payment on residential work must apply for the necessary permits within 30 days and start work within 90 days after the permits are issued, unless there's just cause or the customer agrees in writing to a longer period (Florida Statutes 489.126).

Other states have their own rules, so check with your licensing board before you set a deposit policy.

Documentation that wins disputes

If a customer disputes a charge, your file is your answer. Keep these for every job:

• A signed contract with the scope, price, schedule, payment milestones, and cancellation terms.
• The deposit amount and what it covers, such as materials or a reserved start date.
• Signed change orders before any extra work starts.
• Dated photos before, during, and after the work.
• Delivery receipts for materials ordered for the job.
• The customer's sign-off at completion.
• Every message about delays, with dates.

Our chargeback management tools help you track and answer disputes, but no tool can make up for a missing change order.

How should you schedule deposits and progress payments?

Put the schedule in the contract, keep the deposit inside your state's rules, and tie every later payment to finished work. Here's how that looks on a $30,000 bathroom remodel in the two states above:

California's licensing board tells homeowners to pay only as work is completed, so a schedule that tracks finished stages protects you as much as them. In Florida, section 489.126 doesn't cap the deposit, but taking more than 10% up front starts deadlines you have to meet.

Now the card fees. Say the deposit is $1,000, two progress payments are $9,000 and $10,000, and the final payment is $10,000, all on a Visa Signature card. If every payment goes through a payment link, interchange on the $30,000 comes to $615.40. Take the final $10,000 on a mobile reader at the walkthrough instead, and the total drops to $575.40. That's $40 saved on one job just by being in the room when the biggest payment comes due.

A few terms are worth writing into every contract:

• Which payment methods you accept, and any card fee, stated up front.
• When each payment is due, tied to a stage of work rather than a calendar date.
• What happens to the deposit if the start date moves, and when it's refundable.
• That change orders are priced and signed before the extra work begins.

Can contractors charge a credit card fee?

Often yes, on credit cards only and only where state law allows. Visa caps a surcharge at your merchant discount rate or 3%, whichever is lower, requires notice to your acquirer at least 30 days before you start, and requires the fee to be disclosed and shown on the receipt (Visa). Mastercard lists a 4% maximum (Mastercard). Debit and prepaid cards are off limits for surcharges under both networks' rules. For a contractor, disclosure means the fee shows up on the estimate, the invoice, and the payment page, not just at the office counter.

Several states ban or limit surcharges, including Connecticut, Maine, and Massachusetts. Our guide to free credit card processing covers the state rules, and the cash discount program guide explains the main alternative where surcharges aren't allowed. Our credit card surcharging program handles the compliance, disclosure, and setup if surcharging fits.

Our view: think about the size of the job before you add a fee. On a $25,000 roof, a 3% surcharge is $750, and some homeowners will balk. For big milestone payments from business customers, a bank transfer may be cheaper for everyone; we compare the options in ACH vs. credit card.

Contractor card processing setup checklist

1. Get a merchant account on interchange-plus pricing, so the card-present savings show up on your statement.
2. Equip each crew lead with a mobile reader and phone for chip and tap payments.
3. Set up a virtual terminal for invoices, payment links, and recurring maintenance billing.
4. Write a payment schedule into every contract that matches your state's deposit rules.
5. Use the Cooling-Off notice for any contract signed at the customer's home.
6. Decide on surcharging or a cash discount after checking your state's rules.
7. Tie every receipt and invoice to a job number.
8. Choose a funding schedule that fits your cash flow; we offer same-day or next-day funding options.
9. Keep card numbers off paper, and use our PCI compliance support to stay on track.
10. Review your statement every few months for keyed transactions that could have been taken in person.

When is taking cards not worth it?

Cards are almost always worth accepting, but not for every payment. If a commercial client wants to pay a $40,000 progress bill, the card fee can wipe out a big piece of your margin, and a bank transfer or check is the better ask. Deposits from customers you've never worked with, on jobs that won't start for months, deserve a smaller deposit or a later charge, whatever the payment method. And if most of your card payments end up keyed in from the office, fix the workflow before you shop for a lower rate.

Next step

Find out how much of your card volume is keyed versus card-present, and what that's costing you. Send us a recent statement for a free statement review, and we'll show where on-site payments, a surcharge, or a different pricing model would make a difference. If you'd rather talk first, contact us.