Marketplace Margin Calculator
Calculate net profit and margin for marketplace sellers including platform fee, shipping, and ads cost.
Last reviewed by the Radiatus Cloud team
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Work out your marketplace profit
Selling on a marketplace means platform fees eat into your margin, and knowing the real profit matters. This calculator computes net profit and margin for marketplace sellers including platform fees, so you price for actual profit.
Why marketplace fees change the maths
A marketplace charges fees, a percentage of the sale, sometimes fixed fees, and these come out of your revenue before you see any profit. Pricing without accounting for them means your margin is smaller than it looks, and on thin-margin products the fees can eliminate the profit entirely. Working out the net profit and margin after platform fees, alongside your product and shipping costs, shows what you actually make on a sale. This is essential for deciding what to sell and at what price, since a product that profits on your own site may lose money on a marketplace.
A planning estimate
This is an estimate for planning from the figures you enter, not financial or business advice. Real outcomes depend on factors beyond any single calculation, so treat the result as a guide. It runs entirely in your browser, so your figures are never uploaded and stay on your own machine, which matters for business numbers you would not want to share.
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Frequently Asked Questions
How do marketplace fees affect profit?
They come out of your revenue before profit, so pricing without accounting for them overstates your margin, and on thin products can eliminate profit.
What does the calculator include?
Platform fees alongside your product and shipping costs, to compute the net profit and margin you actually make on a marketplace sale.
Why does this matter for what I sell?
Because a product that profits on your own site may lose money on a marketplace once fees are counted, so the margin decides what is worth selling there.
How is marketplace margin calculated?
As net profit, sale price minus fees, product cost and shipping, divided by the sale price, giving the true margin after the platform takes its cut.
Is my data uploaded?
No. The calculation runs entirely in your browser.
Privacy & Security
Calculated locally in your browser. Use as an estimate.
How to Use
Enter sale price, costs, and fees to calculate profit and margin.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.
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