Break-even analysis answers a question every business owner needs to know: how much do we have to sell just to cover our costs? It ties together pricing, costs, and profit, and it's one of the most testable calculations in Unit 3B.
What Break-Even Means
The break-even point is the level of sales where total revenue exactly equals total costs — no profit, no loss. Sell below it and you lose money; sell above it and every additional sale contributes to profit. Knowing this number turns a vague hope into a concrete sales target.
The Pieces You Need
Break-even uses three inputs: fixed costs (costs that don't change with sales, like rent), the selling price per unit, and the variable cost per unit (the cost of making one more, like materials). From these you get the contribution margin — the price minus the variable cost — which is how much each sale contributes toward covering fixed costs.
The Formula
Break-even (in units) = Fixed Costs ÷ Contribution Margin. In other words, take your fixed costs and divide by how much each sale contributes, and you get the number of units you must sell to break even.
A Worked Example
A pizza food truck sells pizzas for $12 each. The ingredients and box cost $4 per pizza, so the contribution margin is $12 − $4 = $8. If fixed costs are $8,000 a month, then break-even = $8,000 ÷ $8 = 1,000 pizzas per month. Below 1,000 the truck loses money; above it, each pizza adds $8 of profit.
Why It Matters
Break-even analysis guides real decisions: it shows whether a price is high enough, how many customers you need, and how risky a business is. A high break-even point means you need lots of sales just to survive — useful to know before you launch.
Key Takeaways
- Break-even is where total revenue equals total costs — no profit, no loss.
- Contribution margin = price per unit − variable cost per unit.
- Break-even units = fixed costs ÷ contribution margin.
- It sets a concrete sales target and reveals how risky a business is.
Keep Studying
Related: Fixed vs. Variable Costs, Income Statement.
These guides are educational explanations written for the AP Business with Personal Finance course.