About the Discount Margin Calculator
Your margin after a discount and how many more units you must sell to earn the same profit.
Also known as: margin after discount, discount impact on profit, sale margin.
How to use this calculator
- Enter regular price, cost, discount.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Discount Margin formula
Lift = old unit profit ÷ new unit profit − 1
Worked example
Using the values pre-filled in the calculator above:
- Regular price = 60
- Cost = 33
- Discount = 20 %
the calculator returns:
- Margin after discount: 31.25%
- Margin before: 45%
- Sales lift needed: 80%