Break-Even Analysis: What It Is and Why Every Business Owner Needs It
Break-even analysis answers one of the most important questions in business: at my current prices and costs, how many units do I need to sell before I make money? It is not a complex concept, but most small business owners never calculate it — which means they are making pricing and volume decisions without knowing the floor.
The Core Formula
Break-Even Units = Fixed Costs ÷ (Price − Variable Cost per Unit)
The denominator — Price minus Variable Cost — is called the Contribution Margin. It is the amount each sale contributes to covering your fixed costs before any unit generates profit.
Example: you sell a product for $100. Your variable cost (materials, packaging, shipping) is $45. Your fixed costs (rent, salaries, software) are $15,000 per month.
- Contribution Margin = $100 − $45 = $55
- Break-Even Units = $15,000 ÷ $55 = 273 units
You need to sell 273 units before you make a dollar of profit. Every unit above 273 adds $55 to your profit. Every unit below 273 keeps you in loss territory.
Break-Even in Revenue Terms
Sometimes it is easier to think in revenue than units, especially for service businesses.
Break-Even Revenue = Fixed Costs ÷ Contribution Margin Ratio
Contribution Margin Ratio = (Price − Variable Cost) ÷ Price = $55 ÷ $100 = 55%
Break-Even Revenue = $15,000 ÷ 0.55 = $27,273 per month
Using Break-Even for Pricing Decisions
Break-even is a floor, not a target. Knowing where the floor is lets you make better pricing decisions:
- Volume vs. margin tradeoffs — if you lower price by 10%, how many additional units do you need to break even at the new price?
- Cost increase absorption — if your supplier raises prices, what volume or price adjustment restores your break-even point?
- New product decisions — what volume is needed at a proposed price to justify the fixed costs of launching a new line?
The Safety Margin
Once you know your break-even, you can calculate your safety margin — the difference between your current volume and the break-even point.
Safety Margin = (Actual Sales − Break-Even Sales) ÷ Actual Sales
A safety margin of 30% means your sales can drop 30% before you start losing money. This number tells you how resilient your business model is to demand shocks.
Try the Calculator
Use the free Break-Even Calculator to calculate your exact break-even point in 60 seconds. Enter your fixed costs, selling price, and variable cost per unit. Then take the output back to your pricing or volume assumptions and see where you have room to maneuver.
Track break-even automatically across all your products with Abkus SBM →