What Is a Break-Even Point?
The break-even point is the exact sales volume at which a business's total revenue equals its total costs — no profit, no loss. Every unit sold below this point contributes to a net loss. Every unit sold above it generates profit. Knowing your break-even point is the foundation of sound business planning.
The Three Key Components
Fixed Costs
Expenses that remain constant regardless of sales volume — rent, salaried employees, insurance, software subscriptions, loan payments. These costs exist whether you sell zero units or one million.
Examples: Rent, salaries, insurance, subscriptions
Variable Costs
Expenses that increase in direct proportion to the number of units produced or sold. Each additional unit you make or sell adds this cost.
Examples: Materials, packaging, shipping, commissions
Contribution Margin
Selling price minus variable cost per unit. This is how much each sale contributes toward covering fixed costs — and generating profit once the break-even point is reached.
Formula: Price − Variable Cost per Unit
The Break-Even Formula
Example: Fixed costs $5,000/month, selling price $30, variable cost $12. Contribution margin = $18. Break-even = $5,000 / $18 = 278 units per month. The 279th unit sold generates $18 in pure profit.
Using Break-Even to Make Pricing Decisions
Break-even analysis is most powerful when testing pricing scenarios before committing. Lowering your price reduces contribution margin and raises your break-even — you need significantly more sales volume just to stay at the same point. For example, a $5 price decrease on a $30 product (17% price cut) might require a 38%+ increase in volume just to break even. Quantify this before competing on price.
Conversely, a price increase has an outsized positive effect: a $5 increase on the same product reduces the break-even point and immediately improves profitability on every unit already being sold.
Frequently Asked Questions
What is the margin of safety?
Margin of safety = (Actual Sales − Break-Even Sales) ÷ Actual Sales × 100. It tells you how much sales can decline before you start losing money. A business selling 400 units against a break-even of 280 has a 30% margin of safety — it can absorb a 30% revenue drop before going into loss.
Should I include my own salary in fixed costs?
Yes, absolutely. Many solo business owners forget this and end up with a break-even analysis that looks profitable but doesn't actually pay them. If you replaced a $60,000/year job to start this business, include $5,000/month as a fixed cost — otherwise your break-even is understated.
How is break-even revenue calculated?
Break-Even Revenue = Fixed Costs ÷ Gross Margin Percentage. This is useful for service businesses without distinct per-unit pricing. If your gross margin is 65% and fixed costs are $8,000/month, break-even revenue = $8,000 / 0.65 = $12,308/month.