ReckonBoxThe point where the business stops losing money
The break-even point is the sales volume at which total revenue exactly equals total cost, so profit is zero. Below it you lose money, above it you make it, and the number that decides where it falls is the contribution margin.
Run the default. Fixed costs of $10,000, a $100 selling price, a $20 variable cost. Each unit sold covers its own $20 and leaves $80 toward the fixed costs, so it takes $10,000 divided by $80, or 125 units, to cover them. That is $12,500 in sales before the business keeps a single dollar. Unit 126 is the first one that adds its whole $80 to profit.
Contribution margin does the work
Contribution margin is what each sale contributes toward fixed costs after paying its own variable cost. At a $100 price and a $20 variable cost, that is $80 a unit, or 80% of the price. The margin, not the price, sets the break-even point.
This is why a cheap-looking product with a thin margin can be brutal to run. Drop the price to $50 while the variable cost stays $20, and the margin falls to $30, so break-even jumps from 125 units to 334. The same fixed costs, more than double the sales to cover them. Two products at the same revenue can sit worlds apart depending only on the margin each one carries.
| $10,000 fixed costs | $100 price | $110 price |
|---|---|---|
| Contribution margin | $80 | $90 |
| Break-even units | 125 | 112 |
| Break-even revenue | $12,500 | $12,320 |
Three ways to move it
Only three levers change the break-even point: the price, the variable cost, and the fixed cost. Raise the price or cut the variable cost and each unit contributes more, so fewer are needed. Cut the fixed cost and there is simply less to cover. The gain hides in the margin: lifting the $100 price to $110 adds just 10% to the price but drops break-even from 125 units to 112, because the whole $10 flows into the margin. A small pricing change moves the point more than it looks like it should.
What this does not cover
This is plain break-even, the zero-profit line before tax. It assumes one product at one price with a steady variable cost, and it treats every cost as cleanly fixed or variable, when real costs like a sales commission or a volume discount are a bit of both. To aim past survival, add your profit target to the fixed costs before dividing: covering $10,000 of fixed cost plus a $4,000 profit goal at an $80 margin takes 175 units, not 125.
Work out the margin before the price, because the price is what customers see but the margin is what keeps the lights on.
Frequently asked questions
How do I calculate the break-even point? Divide your fixed costs by the contribution margin per unit, which is the price minus the variable cost per unit. With $10,000 of fixed costs, a $100 price, and a $20 variable cost, the margin is $80, so the break-even point is 10,000 divided by 80, or 125 units. That is $12,500 in sales before any profit.
What is contribution margin? Contribution margin is the money each sale contributes toward fixed costs after its own variable cost, so a $100 unit with a $20 variable cost has an $80 margin. As a percentage it is 80% of the price here. Every unit past break-even adds its full contribution margin straight to profit, which is why the margin, not the price, drives the math.
What is the difference between fixed and variable costs? Fixed costs stay the same no matter how much you sell, like rent, insurance, and salaries, while variable costs rise with each unit, like materials, packaging, and payment fees. Break-even splits them deliberately: fixed costs are the target to cover, and the per-unit margin left after variable costs is what covers them.
How do I lower my break-even point? Three levers move it: raise the price, cut the variable cost, or cut the fixed cost. Each widens the gap between what covers the fixed costs and the fixed costs themselves. Raising the $100 price to $110 lifts the margin to $90 and drops break-even from 125 to 112 units. Small margin changes move the point more than they look like they should.
Does break-even account for taxes or a target profit? No, plain break-even is the point where profit is exactly zero, before tax. To hit a target profit, add it to the fixed costs before dividing: covering $10,000 of fixed cost plus a $4,000 profit goal at an $80 margin takes 175 units. This tool shows the zero-profit break-even; a business plan usually layers a profit target on top.