Discount Impact on Margin Calculator
Before launching promotions, check if discounting still works financially. This tool shows your profit drop and required volume lift.
Model discount profitability impact
See margin drop and the extra units required to keep total profit.
Results
Check post-discount margin before expecting volume to compensate for profit loss.
New margin %
33.3%
Discounted price
$27
Old margin %
40%
Old profit per unit
$12
New profit per unit
$9
Additional units needed
400
Interpretation
Discount remains viable
Promo impact appears manageable under current cost assumptions.
Worked example
Worked example
10% discount on a product with $18 unit cost:
How to use
Interpret your result correctly
Use these quick rules to keep pricing and inventory decisions grounded.
- Enter regular price and unit cost.
- Set discount percentage and current sales volume.
- Check additional units needed to keep total monthly profit unchanged.
Common mistakes
Avoid costly calculation errors
These mistakes usually create hidden margin risk or stock friction.
- Assuming more traffic always offsets lower margins.
- Forgetting ad spend usually rises during promo periods.
- Running deep discounts on already thin-margin SKUs.
FAQ
Frequently asked questions
Short answers for common edge cases and interpretation questions.
Related
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Use these next to compare scenarios and validate decisions from multiple angles.
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Pro
Make pricing and margin decisions with saved scenario history
- - Save pricing scenarios
- - Compare discount outcomes
- - Track margin shifts
- - Export calculator summaries