Know your real margin on every order after marketplace fees
A listing that looks like 40% margin can be closer to 25% once the marketplace fee, the payment fee and shipping are paid. Put those in once and every price you test shows the net figure.
How e-commerce teams use Profit Margin Calculator
- Enter your product cost and your planned price.
- Add the marketplace or payment fee %, the fixed fee per order and your shipping cost.
- Read net margin and break-even; use the target box to find the price for the net margin you want.
- List your catalogue in the product table and download it as CSV for your shop sheet.
In the app's own worked example a 40% gross margin falls to 24.7% net after a 10% fee, a fixed 0.30 and 5 of shipping.
The discount box shows how many more sales a promotion needs before it pays for itself.
Worked example: an item that costs 60 and sells for 100, with a 10% marketplace fee, a 0.30 fixed fee and 5 shipping
| Result | Value |
|---|---|
| Gross margin | 40% |
| Markup | 66.67% |
| Fees per order | 10.30 |
| Net profit per order | 24.70 |
| Net margin after fees | 24.7% |
| Break-even price | 72.56 |
| Profit on 10 orders | 247.00 |
| Margin after a 20% discount | 25% |
| Extra sales needed to keep the same profit | +100% |
Source: Computed with the app's own engine (products/profit-margin-calculator/web/margin.js: solve, net and discount) run with node on 10 Oct 2026; the same case is in tests/margin.test.js. Amounts in any currency.
FAQ
Does it know each marketplace's fees?
No. You type the fee % and fixed fee from your marketplace's own fee page, so it works for any shop or platform.
Can I compare several products?
Yes. The product table gives each row's margin and markup plus a weighted margin for the whole list.
Profit Margin Calculator: full guide with prices and alternatives · All use cases · Store