Break-even analysis answers one of the most practical questions in business: how much do I need to sell before I stop losing money? It's the reality check that sits between 'great idea' and 'going concern'.
Fixed vs variable costs
Fixed costs — rent, salaries, insurance — stay the same whether you sell 10 units or 10,000. Variable costs — materials, per-unit labor, shipping — scale with sales. The break-even point is where total revenue equals the sum of both.
The contribution margin is the engine
Each sale contributes its price minus variable cost toward fixed costs. The higher the contribution per unit, the fewer sales you need. This is why premium pricing and cost control both compress the distance to break-even.
Using break-even to make decisions
Before committing to a product or a fixed-cost increase like a bigger office, ask whether sales can realistically clear the new break-even point. Because the model assumes constant prices and costs, treat it as a planning tool, not a precise forecast.
Frequently asked questions
Break-even units = fixed costs ÷ (price − variable cost per unit). With $50,000 fixed, a $100 price and $40 variable cost, you break even at 834 units.
It's the selling price minus variable cost — the amount each unit contributes toward covering fixed costs and then profit. A $100 price with $40 variable cost has a $60 contribution margin.
Then there is no break-even point — every sale loses money. You must raise the price or cut variable costs before the business can be profitable.