Credit Card Processing Fee Calculator
See your true effective rate — the only number worth comparing
Updated 2026-09-09
- Transactions per month
- 333
- Total monthly fees
- $293.33
- Effective rate
- 2.9%
- Annual cost
- $3,520.00
Effective rate is the only number worth comparing between processors. Small tickets punish per-transaction fees hardest.
Your numbers stay on this device. The page link keeps your inputs, so a bookmark or shared link reopens these results.
Processors quote rates that are almost impossible to compare: one advertises 2.6% + 10¢, another 2.9% + 30¢, a third a low percentage plus a monthly account fee. The only figure that matters is your effective rate — total fees divided by total card volume. This calculator produces it from four inputs.
Why per-transaction fees dominate small tickets
On a $60 sale, a 10¢ fixed fee adds 0.17% to your cost. On a $4 coffee, the same 10¢ adds 2.5% — it can cost more than the percentage rate itself.
That is why cafés, food trucks, and convenience stores should weight the fixed fee heavily when choosing a processor, while furniture stores and contractors should focus almost entirely on the percentage.
Flat-rate vs interchange-plus
Flat-rate pricing charges one advertised rate for every card. It is simple, predictable, and generally the right answer under roughly $10,000–$15,000 of monthly card volume.
Interchange-plus passes the card network's wholesale cost through and adds a fixed markup. It is more transparent and usually cheaper at higher volumes, but the statement is harder to read and the savings only appear if your markup is genuinely small. Run both through this calculator using your real volume and ticket size before switching.
The fees quotes leave out
Add these to the monthly fee box so the comparison is honest.
- Monthly account, gateway, or PCI compliance fees
- Statement, batch, and minimum-monthly-fee charges
- Chargeback fees, which apply even when you win the dispute
- Higher rates for keyed-in, invoiced, or card-not-present transactions
- Equipment leases — almost always more expensive than buying a reader outright
The "free terminal" trade
Free hardware is paid for through the rate. A reader worth $60–$300 bundled into a contract with an extra half point on a $20,000 monthly volume costs $100 a month — over a three-year term, many times the hardware price. Buying your own reader and keeping the processor replaceable is usually the cheaper and more flexible route.
Reducing what you pay
Once you know your effective rate, a few moves genuinely lower it.
- Raise the average ticket with bundles — this dilutes fixed fees automatically
- Take card-present taps and dips rather than keyed entry, which is priced higher
- Encourage bank transfer or cash on large invoices, where a percentage fee gets expensive
- Recheck your effective rate every six months; quoted rates drift upward quietly
- Avoid long contracts with early-termination clauses so you can move if the rate moves
Keep the numbers in a spreadsheet
Ready-made Excel and Google Sheets templates that pick up where this calculator stops. One-off purchase, instant download.
Receipt Template + Receipt Log Spreadsheet
Printable receipt with totals and payment method, plus a numbered log.
Simple Profit & Loss (P&L) Statement Spreadsheet
Log transactions; get a monthly and yearly P&L with margins.
Frequently asked questions
What is a good effective rate for a small business?
Under roughly 3% is typical for card-present retail on flat-rate pricing. Small average tickets push it higher; large tickets on interchange-plus can bring it below 2.5%. Compare against your own history rather than an advertised headline rate.
Is flat-rate or interchange-plus cheaper?
Flat-rate usually wins at lower volumes because there are no monthly or account fees to absorb. Interchange-plus tends to win once card volume is consistently five figures a month — but only with a genuinely small markup.
Can I pass card fees on to customers?
Surcharging is allowed in many US states with disclosure rules and card-network caps, and prohibited in a few. Cash discounts are more widely permitted. Confirm your state rules and your processor agreement before adding either. The credit card surcharge calculator shows how much you may add under the 3% cap and what you keep after fees.
Does tap-to-pay on a phone cost more?
Rates are generally comparable to a dedicated reader from the same provider. The trade-off is battery, speed at a busy counter, and no printed receipt rather than a higher rate.
Related reading
More free calculators
Stop calculating one number at a time
ExpressBizTools tracks cost, price, margin, stock levels, and tax on every product and invoice automatically — free, in your browser.
Start freeAs an Amazon Associate, ExpressBizTools earns from qualifying purchases. Product links are affiliate links. Calculations are for general planning and are not tax, legal, or financial advice.