How to use this tool
A decision, not just an output
See the price, fee, margin, total profit, and break-even discount behind a promotion. Read the output alongside its interpretation, assumptions, limitations, and source. Marketplace rates and external requirements should always be confirmed at the linked official source.
Formula & example
Transparent method
Discounted profit = discounted price − unit cost − percentage fees; break-even discount solves profit at zero.
Example: A $100 item with $40 cost, 20% discount, and 10% variable fee earns $32 per unit.
Frequently asked questions
Is the Discount Profit Calculator free?
Yes. The primary result is available without creating an account or entering an email address.
How is the result calculated?
Discounted profit = discounted price − unit cost − percentage fees; break-even discount solves profit at zero.
What should I verify before using it?
Promotion-driven changes in conversion and order volume are not forecast.
Are my inputs private?
Core inputs are processed in your browser. ShipMargin records anonymous tool interaction events, not the business values entered into this form.