Guide
Card acceptance costs more than the sticker rate suggests, and it eats a bigger bite of profit than most owners realise. Here's the maths to decide whether to surcharge, build it into your price, or steer customers to ACH.
Most processors quote a headline rate of 2.6% to 2.9%, plus a flat fee of around $0.30 per transaction. But that's rarely the full story. Add in monthly platform fees, chargeback risk, and premium cards (rewards and corporate cards often run higher), and your real effective rate lands closer to 3% to 3.5%.
On a $6,000 job, 3.4% plus $0.30 works out like this:
$6,000 × 3.4% = $204, plus $0.30 = $204.30 in fees.
If that job carries a 12% net margin, your profit is $720. The card fee alone is $204 — that's 28% of the profit on that job, gone to a processor. This is the number most owners never actually calculate, and it's why the question of surcharging versus raising prices matters more than it looks.
There are two distinct maths problems here, and mixing them up is where people go wrong.
Both are legitimate. Which one fits depends on how your business quotes and bills.
If you want a card-paying customer's job to generate the same gross profit dollars as a cash or ACH job, the formula is:
Margin-neutral uplift % = Fee % ÷ Gross margin %
Worked example: a 3% card fee on a job with a 35% gross margin.
3% ÷ 35% = 8.6%
You need to raise the price by 8.6% on that job to hold your gross profit dollars steady. That's a much bigger number than the 3% fee itself — because the fee comes off revenue, but it eats into a much thinner slice of margin. The lower your margin, the more painful this gets. Run your own numbers through the markup and margin calculator before you decide on a figure — gross margin varies a lot by trade and by job type, and a flat 3% surcharge assumption can be wildly wrong on thin-margin work.
If you'd rather not itemise a card fee on every invoice, you can instead raise your general pricing to cover the average cost of card acceptance across your whole customer base. This depends on what share of your revenue actually comes in by card.
Across-the-board rise % = (Fee % × Card share %) ÷ (1 − Fee %)
Worked example: 3% fee, 55% of revenue paid by card.
(3% × 55%) ÷ (1 − 3%) = 1.65% ÷ 0.97 ≈ 1.7%
So a business where just over half of customers pay by card needs to raise prices roughly 1.7% across the board to cover its blended card processing cost — spread thinly and invisibly, rather than itemised as a line item. It's a smaller number because it's averaged over cash and ACH customers too, who aren't costing you anything in fees.
The right answer often depends on ticket size, not principle. A blanket policy across every job size usually creates friction somewhere.
| Job value | Recommended approach | Why |
|---|---|---|
| Under ~$400 | Absorb the fee | The dollar cost is small ($12 at 3%), and a surcharge line looks petty on a small invoice and can cost you the next call-out |
| $400 – $3,000 | Either — pick one policy and be consistent | This is the grey zone; use the margin-neutral formula if margins are thin, or the across-the-board rise if you'd rather not itemise |
| Over ~$3,000 | Build it into the quote | At $204 on a $6,000 job, this is real money — it belongs in your written quote, not as a surprise line at payment time |
For big-ticket jobs, run the number through your job profitability calculator at quoting stage. If card fees are quietly taking a quarter of your profit on every large job, that's something to price for up front, not discover at the bank statement.
Before you build a surcharge policy or a price rise into your business, check whether ACH bank transfer is realistic for your customer base. Most payment processors charge $1 to $5 flat per ACH transaction — not a percentage. On that $6,000 job, ACH might cost you $3 to $5 instead of $204.
That's not a rounding difference — it's a decision-flipping one. If even a third of your card volume can be moved to ACH (property managers, commercial clients, and repeat residential customers on invoiced terms are often willing), your effective blended fee percentage drops sharply, and the across-the-board price rise you need falls with it. Many field service invoicing platforms let you offer ACH as a one-click option alongside card, sometimes with a small discount as the incentive.
If you decide to surcharge rather than raise prices, treat this as a checklist step, not a strategic decision:
None of this is legal advice — it's a reminder that surcharging has real compliance strings attached that a flat price rise doesn't.
Start with the real cost: 2.6% to 3.5% plus $0.30 per transaction, not just the headline processor rate. Then pick your lever. Small jobs, absorb it. Big jobs, price it into the quote using the margin-neutral formula. If you'd rather not itemise anything, raise prices modestly using the card-share-weighted formula. And before committing to either, see how much of your card volume could move to cheap ACH — it often makes the whole question smaller than it first looks. If margins are already tight, check your numbers against a break-even calculator to see how much room card fees are actually eating into.
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