Why Break-Even Matters
Every business has a minimum number of sales before it starts making money. That number is the break-even point. Below it, you're burning cash. Above it, you're generating profit. Knowing exactly where that line sits shapes pricing decisions, hiring plans, and whether a product is worth launching at all.
The Formula
Break-Even Units = Fixed Costs ÷ (Price per Unit − Variable Cost per Unit)
Break-Even Revenue = Break-Even Units × Price per Unit
The denominator—price minus variable cost—is called contribution margin. Each unit sold contributes that amount toward covering fixed costs. Once all fixed costs are covered, every additional unit sold is profit.
What Counts as Fixed vs. Variable
| Fixed Costs | Variable Costs |
|---|---|
| Rent / lease payments | Raw materials |
| Insurance | Packaging |
| Salaried employees | Shipping per unit |
| Loan payments | Sales commissions |
| Software subscriptions | Transaction fees |
| Equipment depreciation | Hourly labor per unit |
Using Break-Even for Pricing
If your break-even is 10,000 units but you can only realistically sell 5,000, you have three options: raise the price, cut variable costs, or cut fixed costs. Sometimes all three at once. Break-even analysis makes vague pricing discussions concrete.
Service businesses work the same way. Replace "units" with billable hours. Your fixed costs divided by your rate minus hourly variable cost gives you the number of billable hours needed before you turn a profit.
Contribution Margin
Contribution margin per unit = selling price − variable cost. Contribution margin ratio = contribution margin ÷ selling price. A 60% ratio means 60 cents of every dollar goes to covering fixed costs and eventually profit. If the ratio drops below a certain threshold, the math just doesn't work no matter how much you sell.