Discount Margin Impact Calculator
See how a discount changes unit contribution and the sales volume needed to maintain it.
Your numbers
Example values are prefilled. Use the same reporting period for all inputs.
Discounted price
₹900.00
Contribution per discounted unit
₹300.00
Discounted contribution margin
33.33%
Extra unit volume to preserve contribution
33.33%
Undefined if discounted contribution is zero or negative
The formula
Discounted price = Original price × (1 − Discount / 100); Extra volume = ((Original price − Cost) / (Discounted price − Cost) − 1) × 100.
Worked example
A ₹1,000 item with ₹600 variable cost discounted by 10% sells at ₹900 and contributes ₹300. You need 33.33% more units to preserve the original total contribution.