Break-Even Analysis: Formula, Example, and Business Uses

Break-even analysis identifies the sales volume at which total revenue equals total costs. At break-even, a business has covered its fixed and variable costs but has not yet earned an operating profit. The result gives managers a measurable sales floor for pricing, budgeting, capacity, and risk decisions.

Break-even analysis is part of cost-volume-profit analysis. It connects fixed and variable costs, selling price, volume, and profit. For the complete decision framework, begin with the managerial accounting guide.

The break-even formula

Break-even units = Total fixed costs ÷ Contribution margin per unit

Contribution margin per unit = Selling price per unit − Variable cost per unit

To calculate break-even revenue, divide fixed costs by the contribution margin ratio:

Break-even sales revenue = Total fixed costs ÷ Contribution margin ratio

The contribution margin ratio equals contribution margin divided by sales revenue. It shows the percentage of each sales dollar available to cover fixed costs and profit.

Break-even example

Assume a company has monthly fixed costs of $10,000, sells a service package for $100, and incurs $40 of variable cost per sale. The contribution margin is $60 per unit.

$10,000 ÷ $60 = 166.67 units

Because a company generally cannot sell a fraction of a unit, it must sell 167 units to fully cover its costs. Break-even revenue is approximately $16,666.67 when calculated with the 60% contribution margin ratio.

Target-profit analysis

Managers usually want more than zero profit. Target-profit analysis adds the desired operating profit to fixed costs before dividing by contribution margin.

Units for target profit = (Fixed costs + Target profit) ÷ Contribution margin per unit

If the same company wants $5,000 of monthly operating profit, it needs 250 units: ($10,000 + $5,000) ÷ $60.

How businesses use break-even analysis

• Pricing: compare how a price change affects contribution margin and required volume.
• Cost control: measure how rent, payroll, materials, or fees change the sales floor.
• Sales planning: translate a profit goal into units, customers, projects, or billable hours.
• Hiring and equipment: estimate the additional contribution required to support new fixed costs.
• Product decisions: compare the economics of products or services with different margins.

Assumptions and limitations

A basic break-even model assumes selling price, unit variable cost, and total fixed costs remain stable within the relevant range. It also assumes units produced are sold and, in a multiproduct company, that the sales mix remains reasonably consistent. Real businesses face discounts, capacity limits, step costs, waste, seasonality, and uncertain demand.

The answer should therefore be treated as a decision estimate, not a guarantee. Test a base case, a downside case, and an upside case. Also compare accounting profit with cash timing because a business can reach break-even on paper while still experiencing cash-flow pressure.

Break-even and margin of safety

Break-even defines the threshold. The margin of safety measures how far expected or actual sales are above it. A narrow margin means a small decline in sales could eliminate operating profit. The relationship is especially important for businesses with high operating leverage.

Calculate your break-even point

Use the Small-Business Break-Even Calculator to estimate break-even units, break-even revenue, contribution margin, target-profit volume, projected profit, and margin of safety. Then return to the Accounting hub for related financial and managerial accounting guides.