Credit card processing fee calculator
Most credit card processing fee calculators multiply your volume by a rate and stop there. That misses the two things that actually decide your bill: the monthly fixed fees a quote never leads with, and the split between card-present, online and keyed payments, which are priced differently. This Processing Fee Calculator models both, and tells you what your effective rate will be rather than what you were quoted.
Your volume
Average ticket $59.52
Channel mix
Online is the remainder: 35%
Your quoted rates
The part quotes leave out
Statement, gateway, PCI, account maintenance.
Charged only if processing falls below it.
Total monthly cost
$807.55
$9,690.60 a year on $25,000.00 a month.
Very high
Something specific is wrong: tiered pricing, junk line items, or a high-risk rate you have outgrown.
You were quoted about 2.75%. You are actually paying 3.23%, a gap of 0.48%, which is $120.05 a month. Per-item fees and fixed monthly charges are the difference.
This prices the rate structure you entered. It cannot see fees you have not told it about, so check the total against your last statement.
Worked example
$25,000 a month across 420 transactions at 2.9% plus 30 cents, with $35 of monthly fees
Processing is $725.00, the per-transaction fees are $126.00 and the fixed monthly charges are $35.00, so the total is $886.00. That is an effective rate of 3.54%, not 2.9%, and $10,632 a year.
The formula, written out
Monthly cost equals (monthly volume multiplied by the percentage rate) plus (transaction count multiplied by the per-transaction fee) plus every fixed monthly charge on the account.
Effective rate equals total monthly fees divided by total monthly card volume, multiplied by 100. This is the only number worth comparing between two processors, because it is the only one that includes everything.
The gap between the two is where merchants lose money. A quote of 2.9% plus 30 cents sounds like a 2.9% cost. At a $60 average ticket with $35 of monthly fees on $25,000 of volume, it is 3.54%. That 0.64 percentage point gap is $160 a month, or $1,920 a year, and it appears on no quote.
The fixed monthly fees a quote will not mention
Statement fee, gateway fee, monthly minimum, PCI compliance fee, PCI non-compliance fee, batch fee, and account maintenance. Individually they look small. Together they routinely add $30 to $100 a month, and because they do not scale with volume they hit small merchants hardest.
PCI fees deserve their own paragraph. A PCI compliance fee is typically $8 to $25 a month. A PCI non-compliance fee, charged when you have not completed your annual self-assessment questionnaire, is typically $20 to $40 a month and is entirely avoidable. Merchants pay it for years without realising it is a penalty rather than a cost.
The monthly minimum is the sneakiest. If your agreement sets a $25 monthly minimum and your processing fees come to $18, you are billed the missing $7. In a quiet month you pay for volume you did not process.
Why the channel split changes the answer
Card-present payments are the cheapest to process, because the card is physically there and the fraud risk is lower. Online is more expensive. Manually keyed payments, where someone types the number in, are the most expensive of all, usually by half a percentage point or more.
A merchant who does 80% in person and 20% online has a genuinely different cost base from one with the reverse split, even on identical published rates. Any calculator that asks only for total volume is averaging away the thing that matters. This one asks for the split.
The other lever is average ticket. The per-transaction fee is fixed, so the smaller your average sale, the larger a share of it that fee becomes. Two businesses processing $20,000 a month, one at a $10 average ticket and one at a $200 ticket, pay very different effective rates on the same quote. Run both through the calculator and the difference is usually over a percentage point.
What to do with the number
Under 2.25% is a good rate for most US small businesses. Between 2.25% and 2.75% is normal for flat-rate pricing and hard to improve without switching model. Above 3% there is almost always something specific to fix rather than a rate to haggle over.
The usual causes of a high effective rate, in order: tiered pricing, which is designed to be hard to compare; a small average ticket against a high fixed fee; monthly fees you are not using; a high-risk classification you have outgrown; and a large share of keyed transactions that could be card-present or online instead.
Assumptions and limits
- The calculator prices the rate structure you enter. It does not know your processor's actual agreement, and it cannot see fees you do not tell it about.
- Interchange is not modelled here. On interchange-plus pricing, use the interchange-plus calculator, which shows a range rather than a false precise figure.
- Chargeback fees, early termination fees and equipment leases sit outside monthly processing cost and are not included.
- This is an estimate from the figures you entered, not a quote. Your processor statement is the authority on what you actually pay.
Frequently asked questions
- How do you calculate credit card processing fees?
- Multiply your monthly card volume by the percentage rate, multiply your transaction count by the per-transaction fee, then add every fixed monthly charge. Divide that total by your card volume to get your effective rate, which is the only figure worth comparing between processors.
- How much are credit card processing fees for a small business?
- Most US small businesses land between 2.2% and 3.5% all in. Flat-rate providers cluster around 2.6% to 3.5% depending on channel. Interchange-plus accounts at reasonable volume usually come in lower, but carry monthly fees that flat-rate providers do not.
- What is a good credit card processing rate?
- As an effective rate, under 2.25% is good, 2.25% to 2.75% is average, and anything over 3% is worth investigating rather than negotiating. The number to compare is always the effective rate, never the quoted percentage.
- How do I calculate a 3% processing fee?
- Multiply the sale by 0.03. A $100 sale carries $3.00. If there is also a fixed fee, add it: 3% plus 30 cents on $100 is $3.30, which is an effective rate of 3.3% rather than 3%.
- Can I pass processing fees on to customers?
- Sometimes, and the rules are state-specific and network-specific. Surcharging credit cards is prohibited in a small number of US states, capped by the card networks, never permitted on debit cards, and requires advance notice to your acquirer. Check your state's current position before you set anything up.
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