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A practical payment processor fee scenario
For this example, use average transaction of 85, transactions of 120 payments, percentage fee of 2.9 %, and fixed fee per transaction of 0.3. These are starting values, so replace them with numbers that match your situation.
Average transaction: 25% lower
Change average transaction to 64 while keeping the other example values the same.
Average transaction: 25% higher
Change average transaction to 106 while keeping the other example values the same.
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Quick answer
What does the Payment processor fee calculate?
What will payment processing deduct from each sale? This calculator uses average transaction, transactions, percentage fee, and fixed fee per transaction to estimate processing deducted from sales immediately in your browser.
With the values currently entered, the result is $331.80 — processing fees. It also shows gross sales, net received, and effective fee rate.
How to use the Payment processor fee
- Replace the example values with your own numbers.
- Review the result and supporting figures as they update automatically.
- Check the formula and assumptions before using the estimate for a decision.
Inputs used
- Average transaction
- Transactions — entered in payments
- Percentage fee — entered in %
- Fixed fee per transaction
Payment processor fee formula
Sales volume × percentage fee + transactions × fixed fee
Assumptions
- Every transaction has the same average value.
- Refund, dispute, and currency fees are excluded.
Practical guide
Payment processor fee example and edge cases
What will payment processing deduct from each sale? Let's use a concrete example, then look at the assumptions that can move the answer.
Example: A practical payment processor fee scenario
For this example, use average transaction of 85, transactions of 120 payments, percentage fee of 2.9 %, and fixed fee per transaction of 0.3. These are starting values, so replace them with numbers that match your situation.
- Average transaction
- 85
- Transactions
- 120 payments
- Percentage fee
- 2.9 %
- Fixed fee per transaction
- 0.3
Calculated result$331.80processing fees
Start with processing fees. Then check gross sales, net received, and effective fee rate to understand what sits behind the main result.
Example results use the default display profile. The calculator above follows your selected country and units.
How to read the result
- Read the main result first. The supporting figures for gross sales, net received, and effective fee rate explain how the estimate is built.
- The method is Sales volume × percentage fee + transactions × fixed fee. Keep the units consistent and use values from the same time period.
Edge cases worth checking
When average transaction is unusual
Every transaction has the same average value. Double-check this input before relying on the result.
When fixed fee per transaction is uncertain
Refund, dispute, and currency fees are excluded. Run a lower and higher value to see a useful range.
What changes the result most
Average transaction
Use a current amount for average transaction. Include fees or recurring costs that belong in the same figure.
Transactions
Measure transactions with the same unit shown beside the input. Convert first if your source uses another unit.
Percentage fee
Test a lower and higher percentage fee. A small percentage change can move the final result more than expected.
Try a different scenario
Small changes show whether the answer is stable or sensitive.
Average transaction: 25% lower
64$258.72processing fees
Average transaction: 25% higher
106$404.88processing fees
Transactions: 25% higher
150 payments$414.75processing fees
Common mistakes
Check average transaction
Every transaction has the same average value. Make sure this matches the number you enter.
Keep fixed fee per transaction consistent
Refund, dispute, and currency fees are excluded. Use the same units and time period throughout the calculation.
Do not rely on one payment processor fee scenario
Run a cautious case and an optimistic case. The range is often more useful than one exact-looking number.
Use this result well
What will payment processing deduct from each sale?
It does not replace a quote, contract, accountant, or local employment guidance.