Comprehensive Guide
Learn more in our Business & Tax Guide.
How it works
Every unit sold contributes its price minus variable cost toward covering fixed costs. Break-even is the volume where contributions exactly cover the fixed costs — before it, you lose money per month; after it, profit accrues. The engine divides fixed costs by the contribution margin and reports both the unit count and the revenue at that volume. Two implications worth taking seriously. First, the price is a volume decision: raising price 20% can cut the break-even volume by a third, which matters more than margin optics. Second, fixed costs are the anchor: a cheaper location or a leaner toolset shrinks the break-even — the single fastest way to de-risk a launch is to cut fixed costs, not to sell harder. The number is also the vocabulary of every investor conversation: 'we break even at X units and Y revenue, with contribution margin Z' is the sentence that separates plans from wishes.Formula
Break-even units = Fixed costs / (Price - Variable cost) | Revenue = units x price
Tips
- Price below variable cost is not a business — the engine refuses to compute it, and so should you.
- Cut fixed costs before chasing volume: every $1,000 saved lowers the break-even by $1,000 of contribution.
- Model two scenarios: the price you hope for and the price a competitor forces.
- Monthly break-even (fixed costs per month) is the operating version of this number.
Frequently asked questions
What is the break-even point?
The volume (units or revenue) at which total revenue exactly covers total costs — fixed plus variable. Below it the business loses money; above it, every additional unit contributes profit. It is the minimum viable scale of any product or business model.
What is contribution margin?
Price minus variable cost per unit — the slice of each sale that contributes to covering fixed costs and, beyond break-even, to profit. A high contribution margin means each sale does heavy lifting; a low one means you need volume.
How does price affect break-even?
Linearly in the denominator: a 20% price increase at constant costs cuts the break-even volume by a third when contribution was half the price. The trade-off is demand elasticity — price up, break-even down, but fewer units may be sold. Run both directions of this calculator to see the range.
What costs are fixed versus variable?
Fixed costs stay constant with volume: rent, salaries, insurance, software. Variable costs scale with it: materials, per-unit labour, shipping, payment fees. Misclassifying a variable cost as fixed flatters the break-even — audit the list before trusting the number.