How to use Reverse Fee Calculator
Work backwards from a desired net amount using your own percentage and fixed fee.
- Read the actual percentage, fixed fee and amount the provider applies it to.
- Choose the net amount you want to retain.
- Check the rounded-up gross against the provider’s own settlement and rounding rules.
Formula & calculation method
Unrounded gross = (desired net + fixed fee) ÷ (1 − percentage fee ÷ 100). Gross is rounded up to 0.01 currency unit. Modeled net = gross × (1 − fee fraction) − fixed fee.
Input reference · 3 fields
These labels describe the calculation’s base units. Supported measurements can switch through the header’s region settings; follow the current workspace labels. Prefilled values are examples.
- Desired amount after fees
- Enter a plain number with a decimal point if needed. The workspace shows an illustrative value, not a recommendation.
- Percentage fee (%)
- Enter a plain number with a decimal point if needed. The workspace shows an illustrative value, not a recommendation.
- Fixed fee per transaction
- Enter your provider’s actual fee. The calculation assumes the percentage applies to the gross amount only.
A quick example
To retain 100 after a 3% fee and a fixed 0.30, gross is 100.30 ÷ 0.97 = 103.4020619. Rounded up to 0.01, charge 103.41 under this simplified fee model.
Assumptions, edge cases & limits
- This is a generic arithmetic model, not a current schedule for any platform. Provider rounding, taxes, minimum fees and which amounts are charged can differ. Verify the fee basis and terms.
- The percentage must be below 100%. The rounded gross uses two decimal places; actual settlement rounding can differ.
Questions about Reverse Fee Calculator
Why does adding 3% not cover a 3% transaction fee?
The provider charges its percentage on the higher gross amount too. Work backwards with (desired net + fixed fee) ÷ (1 − fee fraction), then check the provider’s rounding rules.
Does this reverse fee calculator use current Stripe or PayPal fees?
No. Enter the actual percentage and fixed fee from your own provider and contract. This is a generic charge-to-net model, with no automatic platform fees or tax schedule.
Are my files or inputs uploaded?
Calculation and file processing run in your browser without a processing upload. Downloads go to your device. Choosing a next-step transfer creates a temporary local copy for that workflow. Region preferences are stored separately from tool inputs. See our privacy details.
Can I use this tool for free?
Yes. No signup, subscription or payment is required to use the tool or download its output. File tools have device and size limits; a smaller batch may work better on a phone.
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