Break-Even & Contribution Margin Calculator
ReasoningThe number every owner should know: how much you have to sell to cover your costs. Set price, variable cost, and your fixed costs, and it solves break-even in units and revenue — then shows your margin of safety, the volume to hit a profit target, and how break-even moves when you change price.
Break-even revenue / mo
$33,333
556 units to break even
Margin of safety
20.6%
144 units above break-even
Operating profit @ expected
$5,200
At 700 units/mo
Set your price and variable cost per unit, then your monthly fixed costs. Break-even = fixed costs ÷ contribution margin per unit. Everything updates live, and the download recomputes the formulas in Excel.
Unit economics
Your plan
Fixed costs (per month)
If your price changed…
| Scenario | Price | CM / unit | Break-even units | Break-even rev. | Profit @ expected |
|---|---|---|---|---|---|
| Price −20% | $48 | $24 | 833 | $40,000 | -$3,200 |
| Price −10% | $54 | $30 | 667 | $36,000 | +$1,000 |
| As-is | $60 | $36 | 556 | $33,333 | +$5,200 |
| Price +10% | $66 | $42 | 476 | $31,429 | +$9,400 |
| Price +20% | $72 | $48 | 417 | $30,000 | +$13,600 |
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