How to Calculate Break-Even Point — Formula & Example

Break-even point is the sales level at which a business covers all its costs — not yet profitable, but no longer losing money. Every business owner should know this number before launching a product, since it tells you exactly how many units (or how much revenue) you need before you start generating actual profit.

The Break-Even Formula (in Units)

Break-Even Point (units) = Fixed Costs ÷ (Selling Price per Unit − Variable Cost per Unit). The denominator, (Price − Variable Cost), is called the "contribution margin per unit" — the amount each sale contributes toward covering fixed costs.

Worked Example

A small business has $10,000/month in fixed costs (rent, salaries, insurance). Each unit sells for $50 and costs $30 in variable costs (materials, packaging) to produce. Contribution margin = $50 − $30 = $20. Break-Even Point = $10,000 ÷ $20 = 500 units per month. Selling fewer than 500 units means a loss; selling more than 500 means profit; exactly 500 means breaking even.

Break-Even Point in Revenue (Dollars)

Sometimes it is more useful to know the break-even point in sales revenue rather than units. Formula: Break-Even Revenue = Fixed Costs ÷ Contribution Margin Ratio, where Contribution Margin Ratio = (Price − Variable Cost) ÷ Price. For the example above: Contribution Margin Ratio = $20 ÷ $50 = 0.40 (40%). Break-Even Revenue = $10,000 ÷ 0.40 = $25,000/month.

Fixed Costs vs Variable Costs

• •Fixed costs stay the same regardless of sales volume: rent, salaries, insurance, loan payments, software subscriptions.
• •Variable costs scale directly with each unit sold: raw materials, packaging, shipping, sales commissions, payment processing fees.
• •Some costs are "semi-variable" (e.g., utilities that have a base charge plus usage-based cost) — for break-even analysis, split these into their fixed and variable components.

Is This the Same as a Social Security Break-Even Calculator?

No — this business break-even calculation is unrelated to a "Social Security break-even" calculation, which compares the cumulative benefit of claiming retirement benefits at different ages (e.g., 62 vs 67 vs 70) to find the age at which delaying "breaks even" with claiming earlier. The two share a name but are entirely different calculations for entirely different purposes.

Using Break-Even for Pricing Decisions

Break-even analysis is also useful in reverse — if you know your target break-even volume (e.g., you can only realistically sell 300 units/month), you can solve for the minimum price needed: rearrange the formula to find the Selling Price that makes Fixed Costs ÷ (Price − Variable Cost) equal to your target unit volume.