Break-Even Analysis

What Is a Break-Even Analysis?

Break-even analysis is a calculation that shows how much a company must sell before it stops losing money. The point where revenue and costs meet is called the break-even point. Below it, the company runs at a loss. Above it, each additional sale adds to profit. Investors use the idea to judge how sensitive a company's earnings are to changes in sales.

How It Works

Costs fall into two groups. Fixed costs, such as rent, salaries, and insurance, stay the same regardless of output. Variable costs, such as raw materials and shipping, rise with each unit produced. Each unit sold brings in its price, but part of that money goes toward its variable cost. The remainder is the contribution margin, and it gradually covers the fixed costs until they are fully paid.

The formula is:

Break-even units = Fixed costs ÷ (Price per unit − Variable cost per unit)

Break-even revenue is found by multiplying the break-even units by the price per unit.

An Illustrative Example

Suppose a small bakery has fixed costs of $10,000 per month, sells each cake for $20, and spends $8 on ingredients and packaging per cake. The contribution margin is $12 per cake. Dividing $10,000 by $12 gives about 834 cakes. Selling fewer than that means a loss, while each cake sold beyond it adds $12 to profit. The numbers are hypothetical, but the logic applies to any business.

Uses and Limitations

Break-even analysis helps managers set prices, judge whether a new product is worth launching, and estimate how much a drop in sales would hurt. A company with high fixed costs has high operating leverage, so small sales changes can cause large swings in profit. The gap between actual sales and the break-even point is the margin of safety. The method has limits. It assumes prices and costs stay constant and that every unit produced is sold, and its results are only as reliable as the cost estimates behind them. It is a planning tool, not a forecast.