Supplier Cost Increase Impact Calculator
When supplier costs go up, even slightly, profitability can drop fast. Quantify the damage and the price needed to protect your old margin.
Model supplier cost increase
Compare old vs new margin and quantify monthly profit impact.
Results
Check monthly impact first, then evaluate the required repricing threshold.
Monthly profit change
-$2,400
Profit change per unit
-$1.2
Old margin %
47.4%
New margin %
41.1%
Required selling price to preserve old margin
$21.28
Interpretation
Margin compression is noticeable
Profit remains positive, but cost pressure is visible. Monitor this SKU closely.
Worked example
Worked example
Cost rises from $10 to $11.20 with same sale price:
How to use
Interpret your result correctly
Use these quick rules to keep pricing and inventory decisions grounded.
- Enter current and new cost per unit from supplier quotes.
- Keep selling price constant to see real impact.
- Use required price output for negotiation and repricing decisions.
Common mistakes
Avoid costly calculation errors
These mistakes usually create hidden margin risk or stock friction.
- Not testing monthly volume scenarios.
- Updating price without checking conversion impact.
- Ignoring packaging or freight changes that come with supplier updates.
FAQ
Frequently asked questions
Short answers for common edge cases and interpretation questions.
Related
Related tools
Use these next to compare scenarios and validate decisions from multiple angles.
Import Profit Margin Calculator
Turn landed cost into clear profit, margin %, and markup % for better pricing decisions.
Margin Calculator After Shipping Fees
Calculate true margin after shipping, payment fees, and variable selling costs.
Discount Impact on Margin Calculator
Understand how discounts affect margin and how many extra units you need to keep profit.
Pro
Make pricing and margin decisions with saved scenario history
- - Save pricing scenarios
- - Compare discount outcomes
- - Track margin shifts
- - Export calculator summaries