MongooseTools by Labs
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Free calculator / Sales

Marketplace fee calculator.

See a seller's proceeds after a marketplace fee you enter, with an optional fixed fee.

Your numbers

Change any value. The result updates here in your browser.

Enter a percentage from 0 to 100.

Your answer

How it works

Fees = sale × percentage ÷ 100 + fixed fee; seller proceeds = sale − fees.

A quick example

A $100 sale with a 10% fee and $0.30 fixed fee leaves $89.70.

This is a calculation from numbers you supply, not financial or tax advice. Check assumptions before making a decision.