TallyKnot

Break-Even Calculator

Find out how many units you need to sell before you start making a profit. Enter your fixed costs, the selling price and the cost to make each unit, and see the break-even point, the revenue it needs, and how many units reach a profit target.

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Your costs and price
Units to break even-
Contribution per unit-
Break-even revenue-
Units for target profit-
Profit at expected sales-

Revenue vs total cost

  • Revenue
  • Total cost
  • Break-even

How break-even works

Every business has two kinds of cost. Fixed costs stay the same whether you sell one unit or a thousand — rent, salaries, software. Variable costs are what each unit itself costs to make or buy. The gap between your selling price and the variable cost is the contribution each sale makes towards the fixed costs.

Example. Fixed costs are 10,000 a month. You sell a product for 50 that costs 30 to make, so each sale contributes 20. To cover 10,000 you need 10,000 ÷ 20 = 500 units. That is 500 × 50 = 25,000 in sales.

The formulas

  • Contribution per unit = selling price − cost per unit
  • Break-even units = fixed costs ÷ contribution, rounded up
  • Units for a target profit = (fixed costs + target profit) ÷ contribution, rounded up
  • Profit at a number of sales = units × contribution − fixed costs

Using it to make decisions

  • Raise the price and the contribution goes up, so you break even on fewer sales.
  • Cut the cost per unit and the contribution goes up too.
  • Lower your fixed costs and the finish line comes closer.
  • To price for a chosen margin in the first place, try the Profit Margin Calculator.

Frequently asked questions

What does "break-even" mean?

It is the point where your total sales exactly cover your total costs — both the fixed costs that stay the same and the variable cost of each unit. Below it you make a loss; above it you make a profit.

What is contribution per unit?

It is the selling price minus the cost to make one unit. Each unit you sell "contributes" that amount towards your fixed costs. Once the contributions add up to the fixed costs, you have broken even.

Why are the break-even units rounded up?

You can only sell whole units, and selling a fraction of one would still leave you short. So the calculator rounds up to the next whole unit that covers the costs.

What if I can never break even?

If each unit costs as much or more than you sell it for, the contribution is zero or negative, and no number of sales will cover the fixed costs. The calculator says so clearly instead of showing an impossible number.

Should I use monthly or yearly figures?

Use the same period for everything. If the fixed costs are for a month, the break-even units and revenue are for a month too. Do not mix monthly costs with yearly sales.

TallyKnot Cashbook

Track your expenses every day, for free

A calculator gives you one answer. A cashbook shows you the whole picture: write down cash in and cash out, see where the money goes in charts and on a calendar, and share a ledger with your family, team or friends.

  • Use it right in your browser, no sign-up
  • With a free account: shared ledgers in sync on Android and the web
  • Charts, calendar view and categories