About SellerKit

SellerKit is a set of free calculators that answer one question properly: after every fee, every cost and every return, what does this sale actually pay me?

How the numbers are maintained

Each calculator ships with the published rate for the most common account type, marked with the month it was last checked. Marketplaces change fees often and vary them by country, category and seller level, so every rate is editable: open the fee panel on any calculator and enter the rate from your own payout report.

That is deliberate. A calculator that hides its assumptions is worse than no calculator, because it produces confident wrong numbers.

What we are not

SellerKit is not affiliated with any marketplace and does not provide tax, legal or financial advice. The tools are planning aids built from publicly published fee schedules.

Corrections

If a rate has changed, email hello@sellerkit.dev and it will be updated. Corrections are the most useful thing you can send.