Break-Even Sensitivity Calculator
A small price move often protects profit more than a volume fight. See your break-even in units and revenue — and test what a 10% price rise or 10% volume drop does to your monthly profit.
This calculator provides estimates for educational use only. It is not tax, legal, or financial advice. Figures are based on current IRS rules — verify against IRS.gov or consult a licensed professional. See our full disclaimer.
Unit Economics
Break-Even & Sensitivity
What-If Scenarios
A 10% price rise usually beats a 10% volume drop — small price moves protect contribution margin far more than volume fights. Test your own scenarios.
* Break-even units = fixed ÷ contribution margin. Educational reference, not advice.
What This Calculator Tells You
Break-Even Units & Revenue
Fixed cost ÷ contribution margin, in units and dollars.
Current Profit
Where you sit above or below break-even now.
What-If Scenarios
Price +10% vs volume -10% side by side.
The Price Lever
See why modest repricing usually wins.
Authoritative References
- U.S. SBA — Break-Even Point — the break-even math extended to sensitivity.
- Contribution-margin and pricing principles consistent with our COGS and prime-cost guides (retrieved 2026-08-13).
Estimates only. From your inputs; not financial advice.
Break-Even FAQs
It shows how break-even (units and revenue) responds to changes in price, cost, and volume — and which lever protects profit most. Break-even units = fixed cost ÷ contribution margin per unit.
A 10% price rise flows straight to contribution margin, while a 10% volume drop cuts total contribution. For most small stores, a modest price increase protects profit more than fighting for more foot traffic.
Your contribution margin % is the inverse of COGS % — pair this with the food-cost, product-mix, and prime-cost tools to find the real lever.