You can be busy, well-reviewed, and still quietly losing money — because "enough customers" is a feeling, and your break-even point is a number. Most owners run for years without knowing theirs, so every pricing decision and every "should I take this job?" is a guess dressed up as a decision.
The takeaway up front: your break-even point is the exact level of sales at which your revenue finally covers all your costs — below it you lose money, above it you make it — and you can calculate it from three numbers you already have. Once you know it, you stop guessing. You can price with confidence, set a realistic monthly target, and judge almost any decision by whether it moves you toward the line or past it. The numbers in the examples below are illustrative — swap in your own.
What your break-even point actually tells you
Your break-even point is the sales level where total revenue equals total cost, so profit is exactly zero. It isn't a goal — nobody dreams of merely breaking even — it's a reference line. Its value is in what it tells you around that line:
- A target with meaning. "Sell more" is a wish. "Cover $3,000 of fixed costs, which means 250 units or $5,000 in sales, before I earn a cent" is a plan.
- A pricing check. If breaking even needs more sales than you could realistically deliver, your price is too low or your costs too high — and the math says so before the year does.
- A go/no-go filter. Judge any new cost, discount, or project with one question: does it move me toward the line or further away?
You can measure it two ways: in units (how many you must sell) or in revenue (how much must come in). Product businesses often prefer units; service businesses want the revenue version. Both run on the same engine — contribution margin.
The break-even formula: three numbers you need
You need exactly three inputs:
- Fixed costs — what you pay each month no matter how much you sell: rent, insurance, software, loan payments, and salaries, including a market-rate wage for yourself.
- Price per unit — what a customer pays for one sale.
- Variable cost per unit — what that one sale costs you to deliver: materials, packaging, shipping, payment fees, commission.
Subtract the variable cost from the price and you get the single most useful figure in the whole calculation — the contribution margin, the slice of each sale left over to "contribute" toward covering fixed costs:
Contribution margin per unit = Price − Variable cost per unit
Then divide fixed costs by that margin:
Break-even point (units) = Fixed costs ÷ Contribution margin per unit
For a revenue figure instead, use the contribution margin ratio (contribution margin ÷ price):
Break-even point (revenue) = Fixed costs ÷ Contribution margin ratio
That's the entire method. The hard part isn't the arithmetic — it's being honest about the three inputs.
A worked example in units
Say you make candles. Each one sells for $20. The wax, wick, jar, label, and packaging cost you $8 a candle. Your fixed costs — studio rent, insurance, software, and a modest wage for yourself — come to $3,000 a month.
- Contribution margin = $20 − $8 = $12 per candle
- Break-even = $3,000 ÷ $12 = 250 candles a month
| Item | Amount |
|---|---|
| Price per candle | $20 |
| Variable cost per candle | $8 |
| Contribution margin | $12 |
| Fixed costs (monthly) | $3,000 |
| Break-even volume | 250 candles |
Sell exactly 250 candles and you make $0 profit: $5,000 of revenue, minus $2,000 of variable cost, minus $3,000 of fixed cost. Candle 251 is your first profitable sale; every candle after that drops $12 straight to profit. Want to actually earn $1,500 in a month? Add it to fixed costs: ($3,000 + $1,500) ÷ $12 = 375 candles. Now "how am I doing?" has a number instead of a mood.
A worked example in revenue (for service businesses)
When you don't sell identical units — a cleaning company, an agency, a consultancy — think in revenue and use the margin ratio. Suppose your variable costs (supplies, subcontractors, payment fees) run about 40% of every invoice. Your contribution margin ratio is 1 − 0.40 = 0.60: 60 cents of every dollar is left to cover fixed costs. With fixed costs of $6,000 a month:
- Break-even revenue = $6,000 ÷ 0.60 = $10,000 a month
Bring in $10,000 and you break even: $4,000 covers variable costs, $6,000 covers fixed costs, and you land at zero. Every dollar above $10,000 then contributes 60 cents to profit. This version is handy because you can track it against your live sales pipeline in real time, without converting everything into units.
Turn the number into decisions
A break-even point you calculate once and file away is trivia. Used well, it drives four everyday decisions:
- Pricing. If break-even demands more sales than you can physically deliver, don't chase volume — raise the price. A higher price lifts your contribution margin, which lowers break-even directly.
- Cost commitments. Eyeing new software, a bigger space, or a hire? Add its monthly cost to fixed costs and re-run the math. A $500-a-month commitment at a $12 margin means selling about 42 more candles every single month, forever, just to stand still.
- Discounts. A discount cuts price, cuts contribution margin, and raises break-even — usually more than owners expect. A 10% discount on a 40%-margin sale doesn't cost you 10%; it wipes out a quarter of your margin.
- Targets. Break-even plus the profit you want gives every month a clear finish line the whole team can see.
One caution: break-even is a profit line, not a cash line. You can be trading above break-even and still run short of cash if customers pay late or you're carrying stock — the gap between profit and cash is exactly what the small business finance guide is about.
Common mistakes that make the number lie
- Forgetting to pay yourself. If your own salary isn't in fixed costs, your "break-even" is really the point where the business survives and you work for free. Put a market-rate wage for your role into fixed costs so the number reflects a real, sustainable business.
- Misclassifying costs. Fixed costs don't change with sales (rent, insurance); variable costs scale with each sale (materials, fees, commission). Drop a cost into the wrong bucket and every figure downstream is wrong.
- Assuming one clean price. Discounts, bundles, and a mix of products mean your real average price and margin differ from the sticker. Use a realistic blended margin, or calculate line by line.
- Treating it as permanent. The day a major cost or your price changes, the old break-even is fiction. Recalculate.
- Confusing it with success. Break-even is the floor, not the target. The whole point of the business lives above the line — aim well past it.
A quick break-even checklist
- List every fixed cost for a typical month — and include a market-rate salary for yourself.
- Work out what one sale costs you to deliver (the variable cost).
- Subtract variable cost from price to get contribution margin, or divide it by price for the margin ratio.
- Divide fixed costs by contribution margin for units, or by the margin ratio for a revenue figure.
- Sense-check it against reality: can you actually sell that much at that price?
- Recalculate whenever a price or a significant cost moves.
FAQ
What is a break-even point in simple terms?
It's the level of sales at which your total revenue exactly equals your total costs, so you make zero profit and zero loss. Sell less than that and you lose money; sell more and you start earning. It replaces a vague sense of "enough" with a concrete number to aim past.
What is the formula for the break-even point?
For units, divide fixed costs by contribution margin per unit, where contribution margin is price minus variable cost: Break-even units = Fixed costs ÷ (Price − Variable cost). For a revenue figure, divide fixed costs by the contribution margin ratio (contribution margin ÷ price). Both need the same three inputs — fixed costs, price, and variable cost per sale.
Should I include my own salary in the break-even calculation?
Yes. Treat a market-rate wage for the work you do as a fixed cost. Leave it out and your break-even point looks lower than it truly is and quietly assumes you'll work for nothing — which isn't a business, it's a job that pays late.
What is a good break-even point?
There's no universal number — lower is safer, but what matters is break-even relative to your realistic capacity. If you break even at 40% of what you can sell in a month, you have a comfortable cushion; if it takes 90%, one slow week erases your profit. Compare the number to what you can actually deliver, not to other businesses.
How often should I recalculate my break-even point?
Whenever a price or a significant cost changes, and as a routine part of planning each quarter or year. Break-even is a snapshot of your current cost and price structure; the moment those move, the line moves with them. A five-minute recalculation keeps every pricing and spending decision honest.
Next step
Stop running on the feeling that you've sold "enough." Take twenty minutes: list your fixed costs (your own salary included), work out what one sale costs you to deliver, and divide. The number you get is the line your business lives or dies on — and once you can see it, pricing, targets, and spending decisions get far easier. Build the rest of your money and finance playbook at dominerbusiness.com.
