Why payment fees quietly eat your revenue
When you send an invoice, the sticker price isn't what you keep. Every payment method takes a cut, and over a year those cuts add up to one of the largest line items a small service business never put on a budget. The two methods most businesses offer — credit card and ACH bank transfer — have wildly different costs, and most owners default to the expensive one without realizing it.
Understanding the gap is worth a few minutes, because unlike most expenses, this one you can lower today simply by steering clients toward a cheaper method. No renegotiation, no new vendor — just a different button on the payment page.
Card processing costs ~2.9% while ACH bank payments are often a few dollars flat. See the real numbers and how much you overpay to get paid.
What credit card processing actually costs
Card processing in the US typically runs around 2.9% of the transaction plus a fixed fee of roughly 30 cents. That rate covers the card networks, the issuing bank, and the processor, and it's largely outside any single tool's control — which is why we're upfront that no honest invoicing tool can claim to beat the underlying card-network rate.
On a $1,000 invoice, 2.9% plus 30 cents comes to about $29.30 in fees. Run a hundred of those invoices in a year and you've handed roughly $2,930 to processors. For a business with thin margins, that's the difference between a profitable month and a flat one.
Cards aren't evil — clients love the convenience and the rewards, and sometimes a card is the only practical option. The mistake is treating cards as the default for large, predictable invoices where a cheaper method would work just as well.
How ACH bank payments compare
ACH (Automated Clearing House) is the network that moves money directly between US bank accounts — the same rails behind direct deposit and most online bill pay. Because there's no card network taking a percentage, ACH is usually priced as a small flat fee rather than a percentage of the invoice.
On that same $1,000 invoice, ACH often costs only a few dollars — roughly $4 instead of the ~$29 a card would cost. The savings get more dramatic as invoice size grows: a $5,000 invoice paid by card costs around $145 in fees, while ACH stays in the low single digits. For B2B and recurring work, that's enormous.
The trade-off is timing and friction: ACH can take a couple of business days to settle, and the client enters bank details instead of tapping a saved card. For most invoice-based businesses, a two-day wait to save $25 per invoice is an easy trade.
The real-world math over a year
Picture a consultant who sends $120,000 in invoices a year across 120 invoices averaging $1,000 each. Paid entirely by card at ~2.9% plus 30 cents, that's about $3,516 in processing fees. Paid entirely by ACH at roughly $4 flat, it's about $480. The difference — over $3,000 a year — is real money that stays in the business.
Even shifting just your larger invoices to ACH while keeping cards available for small or rush payments captures most of the savings. The point isn't to ban cards; it's to stop paying card prices on invoices that don't need them.
How to actually capture the savings
The simplest move is to make ACH the prominent, default option on your invoices while still offering cards as a backup. When clients see a clear bank-transfer option first, a large share will use it — especially other businesses that are used to paying by ACH.
PayNugget is built around this exact idea: we lead with low-cost ACH and support cards when clients prefer them, so you keep convenience without overpaying by default. You can read how it works on our ACH payments page at /features/ach-payments and our card payments page at /features/card-payments.
If your clients pay you on a repeating schedule, pairing ACH with recurring invoices compounds the savings — every cycle bills automatically through the cheaper rail. See /features/recurring-invoices for that setup, and start free at /dashboard to try it on your next invoice.