Calculators
Platform Fee Calculator
Calculate marketplace and payment fees on a sale, the payout you receive and the price needed to net a target amount.
- Runs in your browser
- Nothing uploaded
The tool
Enter your numbers below. Results update as you type, and nothing leaves your browser.
Everything you enter stays on your own machine. Nothing is sent to us or to anyone else, which you can confirm in your browser network tab.
What people use it for
- Pricing on a marketplace or booking platform
- Comparing platforms by effective fee
- Passing fees on to customers accurately
- Checking payout statements
About this tool
What the Platform Fee Calculator does
Most online platforms take a percentage commission, a fixed fee per transaction and a payment processing charge. This calculator shows the fees on a sale, your payout and effective fee rate, and works backwards to the price you must charge to receive a set amount.
Formula
- Fees = price × (commission + processing rates) + fixed fees
- Payout = price − fees
- Price for a target payout = (target + fixed fees) ÷ (1 − percentage fees)
Worked example
Using the starting values in the calculator above:
| Input | Value |
|---|---|
| Sale price | $100 |
| Platform commission | 10% |
| Platform fixed fee | $0.50 |
| Payment processing rate | 2.9% |
| Payment processing fixed fee | $0.30 |
| Payout you want | $90.00 |
| Result | Value |
|---|---|
| Your payout | $86.30 |
| Total fees | $13.70 |
| Effective fee rate | 13.70% |
| Price to charge for target payout | $104.25 |
How to read the result
Fixed fees weigh heavily on small transactions: a 0.80 fixed fee is under 1% of a 100 sale but 16% of a 5 sale.
To pass fees on to buyers, use the price-for-target figure rather than adding the fee percentage to your price, which slightly undercharges.
Marketplace fees change and vary by category and country. Check the platform’s current fee schedule before pricing.
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Questions
Questions about this tool
The things clients actually want to know — costs, timelines, ownership and what happens after launch.
Divide your target payout plus fixed fees by one minus the percentage fees. Simply adding the percentage underestimates the price.
Total fees as a percentage of the sale price, combining percentage and fixed fees.
Fixed per-transaction fees are a bigger share of a small amount.
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