AldervantProduct Profit Calculator for Online Sellers
Understand per-unit contribution after product costs, shipping, packaging, ads and marketplace fees.
See what remains after product costs, shipping, and selling fees.
Product profit and contribution margin
Contribution per unit = sale price − product cost − shipping − packaging − advertising − fixed selling fee − (sale price × percentage fee). Contribution margin = contribution per unit ÷ sale price × 100.
Worked example
For example, a $35 sale with $12 product cost, $5 shipping, $1 packaging, $2 advertising, a $0.30 fixed fee and a 10% selling fee leaves $11.20 in contribution, or 32%.
What to keep in mind
These calculations are estimates for decision support, not accounting or financial advice. Use actual fees and costs, and account for taxes, returns, discounts, and other expenses separately when applicable.
Need to compare multiple products? The Aldervant Seller Profit & Pricing Toolkit is a downloadable Excel workbook available for $29.
Calculator questions
Is this calculator free?
Yes. No account is required.
Are my inputs uploaded?
No. The calculations run in your browser. Website analytics does not collect the numbers entered into the calculator.
Are these results financial advice?
No. Results are estimates for decision support. Check actual fees, taxes, returns, and other costs.