SellMargins is an independent tool site for people who sell on marketplaces. We build calculators that answer one question: after every fee, what do I actually keep?
Every calculator starts from the platform’s own published fee schedule. We record each rate, the date it was last checked, and the source page it came from. When a platform changes a rate, we update the calculator and change the verification date shown on the page. If we cannot confirm a rate, we do not guess — we say so on the page.
We are not affiliated with Etsy, eBay, Depop, Vinted, TikTok or Amazon. We do not sell on your behalf and we do not take a percentage of your sales. The calculators are free and do not require an account.
What we are not: a tax adviser or an accountant. Fee rules change, and rules such as VAT, sales tax and currency conversion can apply differently to different sellers in different countries. Treat the numbers as a starting point and confirm anything that matters with the platform and your accountant.
Found an error? Tell us. Corrections are the most useful message you can send, and every confirmed correction gets the page updated.