Margin after Discount Calculator
Enter your price, unit cost and promo discount to see your margin after the discount - and how much extra volume the promo has to drive just to break even.
Max discount before you lose money: 39.0%
Combined effective discount: 20.0%
Include VAT / tax
Off by default. Turn on to factor tax into the figures.
Margin after discount
23.8%
down from 39.0% at full price
Discounted price
£80.00
Profit per order
£19.00
Profit at full price
£39.00
Extra units needed
+105%
Extra sales needed to recover margin
+105%
More orders required to match full-price profit.
How it works
Set your normal selling price, unit cost and the discount you're considering. The tool shows your margin after the discount, the extra units you'd need to sell to keep the same profit, and whether the promotion actually pays.
Basic guide
Enter the normal selling price, unit cost and fulfilment or shipping cost. Add the promotional discount you are considering.
The tool shows the new margin and calculates how much additional sales volume would be needed to recover the profit lost through the discount.
Example
A product normally sells for £100, with a unit cost of £40.
Proposed discount:
20%
The selling price becomes £80.
The calculator shows the resulting margin and how much extra volume the promotion needs to generate to maintain the same profit.