How to Find Your Break-Even Point (With the Formula)

The break-even formula, explained

Break-even analysis answers one question: how much must you sell to stop losing money? The formula is break-even units = fixed costs ÷ (price − variable cost per unit). Fixed costs stay the same no matter how much you sell — rent, salaries, subscriptions. Variable costs rise with each sale — materials, shipping, transaction fees. The gap between price and variable cost is your contribution margin.

Say your shop has $12,000 a month in fixed costs, sells a product for $40, and spends $25 per unit on materials and shipping. Your contribution margin is $40 − $25 = $15. Divide fixed costs by that margin: 12,000 ÷ 15 = 800 units a month. Sell fewer than 800 and you lose money; sell exactly 800 and you cover every cost with zero profit; sell more and each extra unit is pure $15 of profit.

Break-even in units versus revenue

If you sell many products at different prices, counting units is awkward. Instead use the contribution margin ratio: margin ÷ price. In our example that is 15 ÷ 40 = 37.5%. Break-even revenue = fixed costs ÷ margin ratio = 12,000 ÷ 0.375 = $32,000. That matches 800 units × $40, but it works even when your product mix is varied.

The break-even point is also a planning tool. Want a $6,000 monthly profit instead of zero? Add it to fixed costs: (12,000 + 6,000) ÷ 15 = 1,200 units. Break-even analysis turns a profit goal into a concrete sales target, and shows instantly how a price rise or a cheaper supplier moves that target.

Common mistakes and how to avoid them

The biggest mistake is putting a cost in the wrong bucket. A salaried employee is fixed; an hourly worker whose hours track sales is variable. Payment processing fees are variable even though they feel like overhead. Misclassify one and your break-even point is wrong. When unsure, ask: does this cost change if I sell one more unit? If yes, it is variable.

The second trap is treating break-even as a finish line. It only tells you when you stop losing money, not whether the business is worth running. A break-even of 800 units is fine if you sell 2,000; it is a warning if your market caps at 600. Always compare the break-even point to realistic demand before you commit.

Frequently asked questions

What is the break-even formula?

Break-even units = fixed costs ÷ (price − variable cost per unit). The denominator is the contribution margin. Multiply the result by price to get break-even revenue.

What counts as a fixed cost?

A fixed cost stays the same regardless of how much you sell: rent, salaries, software subscriptions, insurance. If a cost does not change when you sell one more unit, it is fixed.

How do I lower my break-even point?

Cut fixed costs, raise your price, or reduce variable cost per unit — any of the three lowers break-even. Raising the price has the strongest effect because it widens the contribution margin directly.

Does break-even include my own salary?

Only if you pay yourself a fixed salary — then include it in fixed costs. If you take profit instead, add your target income to fixed costs to find the sales level that funds it.