Follow one item from its original price to the discount.
This example excludes fees, fixed overhead and tax.
01 · Start with the unit
Price: $50. Unit cost: $30.
$50 − $30 = $20 contribution
$20 ÷ $50 = 40% margin
$20 per item
Contribution here means price less the stated unit cost.
02 · Apply the discount
A 20% discount means $10 off.
$50 × (1 − 20%) = $40
The unit cost stays at $30.
New price: $40
The customer pays 20% less. Your cost has not changed.
03 · Recalculate contribution
$40 − $30 leaves $10.
Contribution falls from $20 to $10.
New margin: $10 ÷ $40 = 25%.
50% less contribution
A price discount and a contribution decrease use different bases.
04 · Test the sales target
You need twice as many units.
100 units × $20 = $2,000
200 units × $10 = $2,000
Assumes unchanged unit economics.
Demand is not guaranteed.
Check capacity, fees and extra costs before relying on more sales.
Try your own numbers
Check the margin before the offer.
Open Discount Margin.
Compare the original and sale price.
Add fees in the pricing worksheet.
Find Discount Margin under Pricing at profimetrics.online.
Keep the assumptions with the answer.
All figures are hypothetical. Each example uses the stated costs, margin and period; it does not predict demand or campaign results. The calculators and worksheets let you change those assumptions.