Break-even analysis tells you exactly how much you need to sell before your business stops losing money and starts making it. It is one of the most practical tools in business planning, and it applies whether you are launching a new product, opening a location, or evaluating whether a pricing change makes sense.
What Break-Even Analysis Is
The break-even point is the level of sales at which total revenue equals total costs. Below that point, you are operating at a loss. Above it, you are profitable. The analysis forces you to think clearly about your cost structure before committing capital or time.
It answers questions like:
- How many units do I need to sell each month to cover my costs?
- Is this price point realistic given my cost structure?
- What happens to profitability if I raise or lower my price?
Fixed Costs vs. Variable Costs
The foundation of break-even analysis is separating your costs into two categories.
Fixed costs stay the same regardless of how much you produce or sell. They exist whether you sell zero units or ten thousand.
Examples of fixed costs:
- Rent or lease payments
- Salaries for permanent staff
- Software subscriptions and tools
- Insurance premiums
- Loan payments
Variable costs scale directly with production or sales volume. The more you produce, the more you spend.
Examples of variable costs:
- Raw materials or inventory
- Shipping and fulfillment
- Sales commissions
- Credit card processing fees
- Packaging
Getting this distinction right matters. Misclassifying a cost can give you a break-even estimate that is significantly off.
The Break-Even Formula
Break-Even Units = Fixed Costs / (Price per Unit - Variable Cost per Unit)
The denominator in this formula is called the contribution margin: the amount each unit sold contributes toward covering fixed costs.
Contribution Margin = Price per Unit - Variable Cost per Unit
You can also express break-even in revenue dollars rather than units:
Break-Even Revenue = Fixed Costs / Contribution Margin Ratio
Contribution Margin Ratio = Contribution Margin / Price per Unit
A Worked Example
Suppose you run a small business selling handmade candles.
- Selling price per candle: $25
- Variable cost per candle (wax, wick, jar, packaging, shipping): $10
- Monthly fixed costs (studio rent, insurance, website): $1,500
Contribution Margin = $25 - $10 = $15 per candle
Break-Even Units = $1,500 / $15 = 100 candles per month
You need to sell 100 candles per month just to cover costs. Unit 101 is where profit begins.
In revenue terms:
Contribution Margin Ratio = $15 / $25 = 0.60
Break-Even Revenue = $1,500 / 0.60 = $2,500 per month
Using Break-Even to Set Prices and Evaluate New Products
Break-even analysis gives you a floor. If your target market will not pay a price that gets you to break-even at a realistic volume, the product may not be viable as currently structured. You then have a few options: reduce variable costs, reduce fixed costs, increase price, or reconsider the product entirely.
You can also run break-even in reverse. If you know how many units you can realistically sell each month, you can calculate the minimum price required to break even at that volume.
Required Price = (Fixed Costs / Target Units) + Variable Cost per Unit
This is useful when entering a competitive market with established pricing. It tells you whether you can be competitive and profitable at the same time.
Contribution Margin as a Decision Tool
The contribution margin is worth tracking at the product level, not just for break-even. It tells you which products are most efficient at covering overhead. A product with a high contribution margin covers more fixed cost per unit sold, which is valuable even if it is not your highest-revenue item.
If you sell multiple products, you can weight each one's contribution margin by its share of total sales to calculate a blended break-even point across your mix.
Limitations of Break-Even Analysis
Break-even is a static model. It assumes your costs and prices stay constant, which is rarely true in practice. A few limitations to keep in mind:
- It does not account for demand. Reaching break-even is only possible if buyers exist at your price point.
- It treats all fixed costs as truly fixed, but many costs are "step-fixed" (they jump at certain volume thresholds, like hiring a second employee).
- It does not model cash flow timing. Profitability on paper does not mean you have the cash on hand when bills are due.
- It ignores taxes, depreciation, and the time value of money.
Use break-even as a directional tool for early decisions, then layer in more detailed financial modeling as the stakes increase.
Run the Numbers Online
To calculate your break-even point without working through the formulas manually, use the Break-Even Calculator. Enter your fixed costs, price per unit, and variable cost per unit to see how many units you need to sell and what revenue that represents.