“We just need to break even this year” is a sentence most owners have said at least once. Fewer can say what the number is. Break-even is the sales level at which a business covers all of its costs and has nothing left over, and it is one of the few figures in accounting that changes decisions the same day you calculate it. It tells you the minimum you must sell, what a price cut will cost you in volume, and whether a new fixed expense is affordable. This guide explains what breaking even means, gives the two formulas, and works through examples you can copy.
Key Takeaways
- Breaking even means your total revenue exactly covers your total costs, so the business makes neither a profit nor a loss.
- The break-even point in units is fixed costs divided by the contribution margin per unit, which is price minus variable cost.
- In dollars, it is fixed costs divided by the contribution margin ratio, which works for businesses that sell services or many different products.
- Every dollar of sales above break-even adds the contribution margin to profit, which is why small price changes move profit so much.
- The number is only useful if fixed and variable costs are separated correctly, so the sorting step matters more than the arithmetic.
Want the number without working through the arithmetic? The free break-even calculator runs both formulas from your fixed costs, price and variable cost. Nothing you type leaves your browser.
What breaking even means
A business breaks even when revenue equals total costs. Sell less than that and you lose money. Sell more and you make a profit. The point itself is zero profit, which is why it is called a point rather than a goal.
The phrase gets used loosely in three ways, and it helps to know which one someone means:
- Break-even for the business as a whole: the annual or monthly sales needed to cover everything.
- Break-even for a product or service: the volume needed to cover the fixed costs assigned to it.
- Break-even for a single decision: how many extra sales a new hire, a new machine, or an ad campaign must generate to pay for itself.
The math is the same in all three. Only the costs you include change.
The two kinds of cost
Break-even depends on splitting costs into two buckets.
Fixed costs stay the same whether you sell one unit or a thousand, at least within a normal range. Rent, insurance, salaried staff, software subscriptions, and loan payments are fixed.
Variable costs rise and fall with each unit sold. Materials, packaging, payment processing fees, sales commissions, and hourly labor tied to production are variable.
Some costs are mixed. A utility bill has a base charge plus usage. Split it as best you can, and don’t agonize; break-even is a planning tool, not a tax return.
Contribution margin
The difference between what you sell a unit for and what it costs to produce that unit is the contribution margin. It is the amount each sale contributes toward covering fixed costs, and once fixed costs are covered, toward profit.
If a bakery sells a cake for $40 and the ingredients, box, and card fee come to $15, the contribution margin is $25 per cake. Expressed as a ratio, it’s $25 divided by $40, or 62.5 percent. Both forms are used below.
Formula one: break-even in units
Break-even units equal fixed costs divided by contribution margin per unit.
Suppose the bakery’s fixed costs are $6,000 a month: rent, insurance, the owner’s base pay, and utilities. With a $25 contribution margin per cake:
$6,000 divided by $25 equals 240 cakes a month.
At 240 cakes, revenue is $9,600, variable costs are $3,600, and the remaining $6,000 covers fixed costs exactly. Cake number 241 is the first one that earns a profit, and it earns $25.
To run this on your own numbers, the break-even calculator takes the same three inputs and gives the answer in both units and dollars.
Formula two: break-even in dollars
Break-even revenue equals fixed costs divided by the contribution margin ratio.
Using the same bakery: $6,000 divided by 0.625 equals $9,600 in monthly sales. Same answer, different route.
The dollar version is the one most small businesses need, because most don’t sell one identical unit. A consultant, a repair shop, or a store with two hundred products can still compute an overall contribution margin ratio from the income statement: take total revenue, subtract total variable costs, and divide by revenue. Apply that ratio to fixed costs and you have the sales target.
A service business example
A two-person cleaning company bills $150 per job. The variable cost per job, meaning supplies, mileage, and the hourly pay of the cleaner, is $90. Fixed costs are $2,400 a month for the van lease, insurance, phone, software, and the owner’s minimum draw.
- Contribution margin per job: $150 minus $90 equals $60.
- Break-even jobs: $2,400 divided by $60 equals 40 jobs a month.
- Break-even revenue: 40 jobs times $150 equals $6,000.
If the owner wants $1,800 a month in profit on top of covering costs, add it to the fixed costs: $4,200 divided by $60 equals 70 jobs. That is a target with a number attached, which is more useful than “more jobs.”
What the number is good for
Pricing decisions
Drop the cake price from $40 to $35 and the contribution margin falls from $25 to $20. Break-even rises from 240 cakes to 300. The price cut has to bring in 25 percent more volume just to stand still. Most discounts look different once you run this.
Taking on a fixed cost
A second oven adds $500 a month in lease payments. At $25 per cake, it needs to produce 20 additional cakes a month to pay for itself. If the bakery is turning away that many orders, buy it. If not, wait.
Reading the safety margin
If the bakery sells 300 cakes and breaks even at 240, sales can fall 20 percent before it loses money. That cushion is called the margin of safety, and watching it month to month is an early warning that fixed costs have crept up or margins have slipped.
Common mistakes
- Leaving the owner’s pay out of fixed costs. A business that only breaks even after paying its owner nothing is not breaking even.
- Treating all labor as variable. Salaried staff are fixed. Only labor that scales with each unit belongs in variable cost.
- Forgetting payment processing fees, which are variable and can be 3 percent of every sale.
- Using last year’s costs. Rent and insurance change; recalculate at least twice a year.
- Stopping at break-even. The number is a floor. The useful target is break-even plus the profit you need.
Where the numbers come from
Everything above starts with a clean income statement, with expenses categorized consistently enough that you can tag each one as fixed or variable. That is a bookkeeping job before it is an analysis job. If expense categories are a mess, the break-even figure will be too. Once the books are current, the calculation takes minutes, and the break-even calculator will run the units and dollars versions from your fixed costs, price, and variable cost. For the relationship between break-even and the margins you see on the profit and loss, the profit margin guide picks up where this leaves off.
Frequently asked questions
What does it mean to break even?
It means revenue equals total costs, so there is no profit and no loss. Sales above that point generate profit; sales below it generate a loss.
What is the break-even formula?
In units: fixed costs divided by contribution margin per unit. In dollars: fixed costs divided by contribution margin ratio, where the ratio is contribution margin divided by price.
What is break-even analysis?
Using the break-even calculation to test decisions: what a price change does to the volume you need, whether a new fixed cost is affordable, and how much sales could fall before the business loses money.
Is break-even the same as profit?
No. Break-even is zero profit. Profit begins with the first sale past the break-even point and grows by the contribution margin on each additional sale.
How often should I recalculate break-even?
Whenever fixed costs or prices change, and at least twice a year in any case. Rent increases, new subscriptions, and supplier price changes all move the number.
