How break-even analysis works
Every business has two kinds of costs. Fixed costs stay the same no matter how much you sell — rent, salaries, software subscriptions, insurance. Variable costs rise with each unit produced — materials, packaging, shipping, payment fees. Break-even analysis finds the sales volume at which the money coming in exactly cancels both kinds of cost.
The engine of the calculation is the contribution margin: the price of one unit minus the variable cost of making it. That leftover amount is what each sale "contributes" toward paying down your fixed costs. Once enough units have been sold to cover the entire fixed-cost block, every additional sale turns its full contribution margin into profit.
Reading your break-even point
The headline number is the unit count you must sell before you stop losing money. Below it sits the break-even revenue — the dollar sales that volume represents — and the per-unit contribution margin that drives both figures.
Use these to sanity-check a business idea. If the break-even volume is far above what your market could realistically buy, the price is too low, the variable cost is too high, or the fixed costs are too heavy. The chart shows how break-even revenue divides between the variable costs you still have to pay and the fixed costs you finally recover at that volume.
Lowering your break-even point
A lower break-even point means you reach profitability sooner and carry less risk. There are three levers, and small moves on each compound:
- Raise the price, if the market will bear it — every dollar added to price flows straight into contribution margin.
- Cut variable costs by negotiating supplier rates, reducing waste, or buying in bulk.
- Trim fixed overhead, since a smaller fixed block needs fewer units to cover it.
- Improve the product mix toward higher-margin items so each average sale contributes more.
Limits of a simple break-even model
This calculator assumes one price and one variable cost per unit, which is rarely exactly true. In practice prices vary with discounts and channels, variable costs shift with volume, and some "fixed" costs step up once you grow past a threshold. Treat the result as a planning estimate, not a guarantee, and rerun it with conservative numbers before committing capital.
Formula
contribution = price − variableCost; breakEvenUnits = ⌈fixedCosts / contribution⌉; breakEvenRevenue = breakEvenUnits × priceFrequently asked questions
- What is contribution margin?
- It is the price of a unit minus its variable cost — the amount each sale contributes toward covering fixed costs and, beyond break-even, profit.