Break-Even Point Calculator
Calculate the break-even point in units and revenue.
Find out how many units you must sell to cover all fixed and variable costs.
What Is the Break-Even Point? The break-even point (BEP) is the level of output at which total revenue exactly equals total costs. Below this point, the business makes a loss. Above it, every additional unit sold generates profit. It is one of the most important concepts in business planning and financial analysis.
Contribution Margin Before calculating the break-even point, you need the contribution margin — the amount each unit sold contributes toward covering fixed costs after paying variable costs:
Contribution Margin (CM) = Selling Price per Unit - Variable Cost per Unit
The contribution margin ratio expresses this as a percentage of the selling price:
CM Ratio = CM / Selling Price
Break-Even Formula Break-Even Units = Fixed Costs / Contribution Margin
Break-Even Revenue = Fixed Costs / CM Ratio
The logic is straightforward: your fixed costs must be covered before any profit is made. Each unit sold contributes a fixed dollar amount (the CM) toward those costs. The number of units needed to cover all fixed costs is the break-even point.
Fixed vs. Variable Costs Fixed costs remain constant regardless of output — rent, salaries, insurance, loan repayments. Variable costs change directly with output — raw materials, direct labor, packaging, sales commissions. Understanding this split is fundamental to cost analysis.
Margin of Safety Once you know the break-even point, you can calculate the margin of safety — how far current (or projected) sales can fall before you reach the loss zone:
Margin of Safety = Actual Sales - Break-Even Sales
A high margin of safety means the business can withstand a significant drop in revenue without becoming unprofitable.
Limitations The basic break-even model assumes a constant selling price and constant variable cost per unit. In reality, volume discounts, economies of scale, and price changes make the analysis more complex. The model is best used for planning and sensitivity analysis rather than precise prediction.
Practical Uses Break-even analysis helps entrepreneurs evaluate new business ideas, set pricing strategies, decide whether to launch a new product, and understand the minimum sales required to justify an investment.