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Every business owner eventually asks: “How much do I need to sell just to cover my costs?” That number is your break-even point. Knowing it turns vague worries into a clear target — and shows exactly which levers make the biggest difference.
Fixed vs variable costs
- Fixed costs stay the same however much you sell in a month: rent, salaries, loan EMIs, software subscriptions, insurance.
- Variable costs rise with every unit you sell: raw materials, packaging, delivery, payment gateway fees, sales commission.
The formula
Break-even units = Fixed costs ÷ (Selling price − Variable cost per unit)
The part in brackets is the contribution margin — what each sale contributes towards paying fixed costs.
A small business example
Priya runs a home bakery selling celebration cakes:
| Item | Amount |
|---|---|
| Fixed costs per month (rent, helper’s salary, electricity, equipment EMI) | ₹1,00,000 |
| Selling price per cake | ₹500 |
| Variable cost per cake (ingredients, box, delivery) | ₹300 |
| Contribution per cake | ₹200 |
Break-even = ₹1,00,000 ÷ ₹200 = 500 cakes a month.
Break-even revenue = 500 × ₹500 = ₹2,50,000.
If she sells 800 cakes: profit = (800 − 500) × ₹200 = ₹60,000.
Which lever matters most?
Here’s how the break-even point changes with different moves:
| Change | New contribution | Break-even |
|---|---|---|
| Starting point | ₹200 | 500 cakes |
| Raise price to ₹550 | ₹250 | 400 cakes |
| Cut variable cost to ₹280 | ₹220 | 455 cakes |
| Cut fixed costs to ₹80,000 | ₹200 | 400 cakes |
| Discount price to ₹450 | ₹150 | 667 cakes |
A ₹50 price increase lowers the target by 100 cakes. A ₹50 discount raises it by 167. This is why frequent discounting is so dangerous for small businesses.
If the selling price is lower than the variable cost, every sale loses money and you can never break even, however much you sell.
Using break-even to make decisions
- Before hiring: a new ₹25,000 salary adds 125 cakes to Priya’s monthly break-even. Can she sell that many more?
- Before moving premises: higher rent raises the fixed costs — calculate the new target first.
- When pricing a new product: make sure its contribution margin is healthy.
- When planning a discount: check how many extra sales are needed just to stay even.
Limitations
The simple model assumes one product (or a stable product mix), a constant selling price, and costs that clearly split into fixed and variable. Real businesses are messier, so treat break-even as a planning guide and update it with actual figures.
Calculate your break-even
Our Break-Even Calculator takes your fixed costs, selling price and variable cost per unit, then shows break-even units, break-even revenue, contribution margin, and profit or loss at your expected sales.
Free toolTry the Break-Even CalculatorFind out how many units you must sell before you start making a profit.Frequently asked questions
Should I include my own salary in fixed costs?
Yes, if you want to know when the business truly pays its way. Many owners leave it out and think they're profitable when they aren't.
Is break-even the same as profitability?
No. Break-even is the minimum to avoid a loss. Every unit sold beyond it adds its contribution margin to profit.
How often should I recalculate?
Whenever prices, rent, salaries or supplier costs change — and at least once a year.
Written by the Toolsopedia team. Spotted an error? Tell us and we’ll fix it.