BUSINESS & ECOMMERCE TOOLS
Seller Margin Calculator
See what remains after product cost, fulfillment, marketplace and payment fees, ads, and a returns reserve.
▤ Price · direct costs · fees✓ Discount and returns reserve◈ Break-even ad budget and ROAS↗ Minimum list price for a target margin
ONE ORDER · THE WHOLE PICTURE
What is left after the sale?
Enter one product's price, direct costs, and fee assumptions. Your estimate updates as you type.
YOUR ASSUMPTIONS
Price, costs, and fees
Fee, ad, and reserve percentages use the discounted item price. Sales tax, buyer-paid shipping, overhead, and financing are not included. Replace sample fee rates with your actual plan.
ESTIMATED CONTRIBUTION / ORDER$8.6627.1% contribution margin after listed assumptions
PER ORDER
Where the money goes
Product cost$9.00
Fulfillment$5.00
Packaging$0.75
Marketplace fee$3.84
Payment fee$0.93
Transaction fee$0.30
Advertising allowance$2.56
Returns reserve$0.96
Room for ads before break-even$11.22
LIST PRICE FOR 25% TARGET MARGIN$30.65Includes the current 0.0% discount assumption.
Break-even ROASRevenue divided by max ad spend before profit reaches zero2.85×
Example unit economics loaded. Adjust any assumption to see the estimate update.
Planning estimate only. Actual fees, returns, taxes, fulfillment, and ad attribution vary by marketplace and product. This calculator is not accounting or tax advice.
HOW IT WORKS
Build a useful estimate from the costs you actually know.
Marketplace fees vary by plan, category, and promotion. Treat every percentage as an assumption and compare the estimate against your actual settlement reports.
- 1Enter price and per-order costs
Add unit cost, fulfillment, packaging, and transaction costs. Choose a display currency; no currency conversion is performed.
- 2Add fee and operating assumptions
Estimate marketplace, payment, advertising, and return reserve amounts from discounted item revenue.
- 3Compare contribution and target price
Review the after-cost contribution, break-even ad budget, break-even ROAS, and list price needed for your target margin.