Payment Processing Fee Calculator
True payment fee cost.
Calculate annual payment processing fees including percentage and fixed. Enter revenue and transactions for an instant result.
What this tool does
This tool calculates annual payment processing fees and effective percentage on revenue.
Enter Values
Formula Used
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Disclaimer
Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.
Payment processor fees combine percentage (1.5-3.5%) and fixed (0.20-0.30) per transaction. For high-volume businesses with small transactions, fixed fees dominate; for large transactions, percentage dominates.
500,000 revenue with 10,000 transactions at 2.9% + 0.20: 14,500 + 2,000 = 16,500 total (3.3% effective). Large transactions (100+) see percentage dominate; small (10) see fixed fee as 2% alone.
Negotiate when volume grows. 500k+ revenue often qualifies for 1.5-2.5% deals. Stripe, Square, GoCardless all offer custom pricing above thresholds.
Quick example
With annual revenue of 500,000 and annual transactions of 10,000 (plus percentage fee of 2.9% and fixed fee per transaction of 0.2), the result is 16,500.00. Change any figure and watch the output shift — it's often more useful to see the pattern than to memorise the formula.
Which inputs matter most
You enter Annual Revenue, Annual Transactions, Percentage Fee, and Fixed Fee per Transaction. Frequency and unit price pull the total in different directions. The biggest surprise for most people is how small recurring amounts compound into large annual figures — that's where this calculation earns its keep.
What's happening under the hood
Percentage fees = revenue × rate. Fixed fees = transactions × fixed. Total = sum. The formula is listed in full below. If the number looks off, you can retrace the calculation by hand — that's the point of showing the working.
Using this as a check-in
Re-run this every three months. A single reading tells you where you stand; four readings tell you whether things are improving. The trend matters more than any individual snapshot.
What this doesn't capture
The score is a composite of the inputs you provide. Life context — job security, family obligations, health, housing — doesn't appear in the math but shapes the real picture. Use the number as a prompt, not a verdict.
£500,000 £ × 2.9% + 10,000 × £0.2 £ = $16,500.00.
Inputs
This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.
Sources & Methodology
Methodology
Percentage fees = revenue × rate. Fixed fees = transactions × fixed. Total = sum.
References
Frequently Asked Questions
When to switch processors?
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