Skip to content
Unitly

Discount Calculator

Discounts are easy to give and hard to take back — and they hit profit far harder than they appear to. Enter your price, cost and discount to see the true margin impact before you run the promotion.

Inputs

Results

Sale price

$71.20

Amount saved
$17.80
Profit after discount
$37.20
Margin after discount
52.0%
Margin before discount
62.0%
Extra units needed to keep same profit
1.48×

The multiplier tells you how many more units you must sell at the discounted price to earn the same total profit.

Formula

Sale Price = Price × (1 − Discount) · Extra volume needed = Profit Before ÷ Profit After

FAQ

Why do small discounts need so much extra volume?

Because discounts cut profit per unit directly. A 20% discount on a product with a 40% margin halves the per-unit profit — you need double the volume just to stay level.

Are there better alternatives to discounting?

Bundles, free shipping thresholds and gifts-with-purchase protect the list price while still creating a promotion.