Break-Even Calculator
Calculate how many units you need to sell - and how much revenue you need to generate - before your business starts making a profit.
A break-even calculator shows the sales volume or revenue where total revenue equals total cost, so profit is zero. This free break-even calculator uses your fixed costs, variable cost per unit, and selling price to return break-even units, break-even revenue, contribution margin, contribution margin ratio, and a chart where revenue crosses total cost.
Most new employer establishments do not last forever. From 1994 through 2021, about 49.2 percent of new employer establishments reached five years, and about 33.8 percent reached ten years (U.S. Small Business Administration Office of Advocacy, 2024, citing ABS and BED data). Small businesses also represent 99.9 percent of U.S. firms (U.S. Small Business Administration Office of Advocacy, 2024). This break-even calculator turns your numbers into a clear floor so you are not planning blind. When you know that point, you can pair it with invoicing and collection so sales actually show up as cash.
It sounds simple, but many owners still estimate by feel. They know roughly what they charge and roughly what things cost, and hope the math works out. This break-even calculator makes the math concrete in real time, with a visual chart showing where revenue crosses total cost. Once you know your break-even point, tools like Invoice Mama make it easier to track revenue, send professional invoices, and get paid.
How to Use This Break-Even Calculator
Three required inputs, optional volume, and your break-even answer.
This break-even calculator takes fixed costs, variable cost per unit, and price, then computes break-even units, break-even revenue, contribution margin, and contribution margin ratio. Add an optional sales volume to see profit or loss at that level. The chart shows total revenue and total cost so you can see the crossover. Use one consistent time period for every input, such as all monthly figures together.
- 1
Enter Your Fixed Costs
Add up all costs that stay the same regardless of sales: rent, salaries, insurance, subscriptions, loan repayments. Enter the total per month (or whatever time period you are analyzing).
- 2
Enter Variable Cost per Unit
This is what it costs you to produce or deliver one unit: materials, packaging, shipping, per-unit labor. This must be lower than your price. If it is not, you lose money on every unit before fixed costs.
- 3
Enter Your Selling Price per Unit
The price a customer pays for one unit of your product or service. The break-even calculator shows break-even units, revenue, contribution margin, and CM ratio.
- 4
Optionally: Add a Sales Volume Target
Enter how many units you plan or expect to sell. The calculator shows your projected profit or loss at that volume and marks it on the chart.
Break-Even Formulas Explained
The math behind the break-even calculator, without a spreadsheet.
Break-even analysis is cost-volume-profit analysis in compact form. Contribution margin per unit is price minus variable cost per unit. Break-even units equal fixed costs divided by that margin. Break-even revenue equals break-even units times price, or fixed costs divided by the contribution margin ratio. This break-even calculator applies those relationships automatically.
- 1
Contribution Margin (CM)
The amount each unit sale contributes toward covering fixed costs. If your price is $50 and variable cost is $20, contribution margin is $30. Every $30 you earn goes toward paying rent, salaries, and overhead.
- 2
Break-Even Units
Divide total fixed costs by contribution margin. If fixed costs are $6,000 and CM is $30, you need to sell exactly 200 units to break even. Unit 201 puts $30 of pure profit in your pocket.
- 3
Break-Even Revenue
Multiply break-even units by your selling price to get the dollar amount of sales needed. Useful when you think in monthly revenue instead of unit counts.
- 4
CM Ratio
Contribution margin divided by price, expressed as a percentage. A 60 percent CM ratio means 60 cents of every revenue dollar is available to cover fixed costs and profit after variable costs.
Worked example: A freelance designer has $3,500 per month in fixed costs (studio rent, software, insurance). She charges $500 per project and spends about $50 in variable costs per project (stock assets, contractor help). CM = $500 - $50 = $450. Break-even = $3,500 / $450, or about 7.8 projects, so she needs eight projects in that month before she is profitable. At 12 projects, she earns $450 * 12 - $3,500 = $1,900 in monthly profit.
How to Read the Break-Even Chart
The visual shows what the break-even calculator is solving for.
The chart plots units on the horizontal axis and dollars on the vertical axis. The revenue line starts at zero and slopes up with a rise equal to price per unit. The total cost line starts at fixed cost and slopes up with variable cost per unit. Where they cross is break-even. To the left you lose money; to the right you earn profit. The gap between the lines after break-even shows how profit grows once you move past the crossover.
- Total Revenue Line (blue)Starts at zero (no sales means no revenue) and rises in a straight line. The slope equals price per unit. A steeper line means a higher price per unit.
- Total Cost Line (red)Starts above zero because fixed costs exist even at zero sales. The slope equals variable cost per unit.
- The Crossing PointWhere the two lines meet is your break-even point. To the left, total cost exceeds revenue. To the right, revenue exceeds cost.
- The Gap Above Break-EvenThe wider the gap between revenue and cost to the right of break-even, the more profit you add per unit at scale. A narrow gap means thin margins and high sensitivity to volume.
Contribution Margin: The Number That Drives Everything
The break-even calculator is built around contribution margin.
Contribution margin per unit is price minus variable cost per unit. It is the engine behind break-even units and break-even revenue. Product-level decisions that change price or variable cost flow straight into contribution margin, which is why cost-volume-profit analysis starts here.
But if you want to understand how a specific product contributes to the company's profit, you need to look at contribution margin.
Harvard Business Review (2017).
Contribution margin is the single most important bridge between your price sheet and your break-even point. Every pricing choice and every cost that moves with output feeds contribution margin first.
Industry / Business Type | Illustrative CM ratio band | What usually drives it |
|---|---|---|
| Software / SaaS | Often high | Low incremental cost to serve one more customer |
| Professional services | Often high | Labor and materials vary by job; price per engagement |
| E-commerce / retail | Wide range | Product cost, shipping, and returns |
| Food and beverage | Wide range | Ingredients, packaging, and labor per cover |
| Manufacturing | Wide range | Materials and direct labor scale with output |
| Construction / trades | Wide range | Subcontractors, materials, and job mix |
The bands above are illustrative, not benchmarks for your tax return. Real ratios vary by company, pricing, and cost structure. Use the break-even calculator with your own numbers, then compare results to your past months or to a peer group in the same niche when you double-check.
If your contribution margin ratio is low, you usually need higher volume or a better cost and price mix to clear fixed costs. If it is high, your main risk is often demand, not unit economics. Either way, break-even math stays the same: fixed costs divided by contribution margin per unit.
Break-Even Examples for Common Business Types
Illustrative scenarios you can recreate in the break-even calculator.
These rounded examples show how the same break-even calculator inputs behave in different settings. Swap in your real fixed costs, variable cost per unit, and price to match your business.
E-commerce Store
Fixed costs: $2,000 per month. Product cost plus shipping: $18 per unit. Selling price: $45. CM = $27. Break-even is about 74 units ($3,330 in monthly revenue).
Restaurant
Fixed costs: $15,000 per month. Food plus labor per cover: $18. Average check: $38. CM = $20. Break-even = 750 covers (about 25 per day on a 30-day month).
Freelance / Consulting
Fixed costs: $2,500 per month. Variable cost per project: $30 (tools, assets). Project fee: $800. CM = $770. Break-even is about 3.3 projects per month.
What Break-Even Analysis Doesn't Tell You
Use the break-even calculator with eyes open about its limits.
Break-even analysis assumes a clear split between fixed and variable costs, linear slopes in the chart, and a single product or a stable average margin. It does not forecast customer demand, timing of cash collection, or tax outcomes. Pair the break-even calculator with sales planning and, when needed, cash flow and tax advice.
- It assumes a single product (or average blended price)If you sell multiple products at different prices and margins, a blended contribution margin is an estimate. For accuracy, run separate break-even analyses per product line.
- It doesn't account for time value of moneyBreak-even is a snapshot. It does not replace discounted cash flow when timing and risk of cash matter.
- Costs may not be perfectly linearVariable costs can change at scale. Fixed costs can step up when you hire or add space. The chart simplifies reality into straight lines.
- It ignores market demandThe calculator shows how much you need to sell, not whether buyers will show up. Break-even is one input in planning, not a sales forecast.
Sources and Further Reading
Primary references for statistics and definitions used on this page.
Survival statistics and firm counts come from U.S. government small-business research. Contribution margin framing follows widely taught cost-volume-profit analysis and the Harvard Business Review overview cited above.
U.S. Small Business Administration Office of Advocacy: Frequently Asked Questions About Small Business (PDF, July 2024)U.S. Bureau of Labor Statistics: Business Employment DynamicsHarvard Business Review: Contribution Margin: What It Is, How to Calculate It, and Why You Need It (2017)From Break-Even to Getting Paid
Numbers first. Cash in the bank second.
The break-even calculator tells you how much you need to sell. It does not collect payment. After you set targets, the next step is invoicing and follow-up so revenue turns into cash. Invoice Mama helps you create professional invoices in seconds from a plain-English description of the work.
When you know how many units or projects you need, you still have to bill them cleanly and on time. Invoice Mama is built for people who sell real work, not for spreadsheet hobbyists. Describe the job, send the invoice, and get back to delivery.
Frequently Asked Questions
Straight answers about break-even analysis and this break-even calculator
What is a break-even point and why does it matter?
The break-even point is the sales volume (or revenue) where total revenue equals total cost, so profit is zero. It matters because it is the minimum you must sell to stop losing money on operations, and every unit beyond that adds to profit. From 1994 through 2021, about 49.2 percent of new employer establishments reached five years (U.S. Small Business Administration Office of Advocacy, 2024, citing ABS and BED data). Knowing your break-even helps you price, budget, and plan with a clear floor instead of guessing.
How do you calculate break-even point in units?
Break-even units equal fixed costs divided by contribution margin per unit, where contribution margin per unit is price minus variable cost per unit. Example: $5,000 fixed costs, $12 variable cost, $30 price gives contribution margin $18, so break-even units = 5,000 / 18, or about 278 units. Once fixed costs are covered, each additional unit adds contribution margin to profit.
What is contribution margin and how is it different from profit?
Contribution margin is the amount left from each sale after variable costs and before fixed costs. Gross profit, in common usage, is revenue minus cost of goods sold; operating profit then subtracts operating expenses. Contribution margin per unit answers how much each sale contributes toward fixed costs and profit. The contribution margin ratio is contribution margin divided by price. A 40 percent ratio means $0.40 of each revenue dollar is available to cover fixed costs and profit after variable costs.
What counts as a fixed cost vs. a variable cost?
Fixed costs do not change with output in the short run: rent, salaried wages, insurance, many subscriptions, loan repayments, and depreciation schedules you treat as fixed. Variable costs move with output: raw materials, piece-rate labor, packaging, shipping per order, and per-unit commissions. Some costs are mixed. For break-even analysis, split mixed costs into a fixed base and a per-unit variable portion so your break-even calculator inputs stay consistent.
What is break-even revenue and how do I calculate it?
Break-even revenue is the dollar sales you need to cover all costs at zero profit. It equals break-even units times price per unit. You can also compute it as fixed costs divided by the contribution margin ratio when you work in percentages. Both approaches match when your inputs use the same time period and definitions.
What does a high or low contribution margin ratio mean for my business?
A high contribution margin ratio means variable costs eat a smaller share of price, so each sale funds fixed costs faster. A low ratio means you need more volume to cover overhead. There is no single correct ratio for every business; what matters is whether your expected volume clears break-even at your real costs and price. Compare your ratio to your own history and to peers in the same industry when you benchmark.
How do I use the break-even calculator for a service business with no physical units?
Define one unit as whatever you sell in repeatable chunks: an hour, a project, a visit, or a client month. Example: $3,000 monthly fixed costs, $120 revenue per cleaning, $40 variable cost per cleaning gives contribution margin $80, so break-even is 3,000 / 80 = 37.5 jobs per month. The break-even calculator uses the same math once your unit is defined.
What happens to my break-even point if I change my price?
A higher price raises contribution margin per unit, so break-even usually falls if costs stay flat. A lower price does the reverse. In one illustrative example, if price is $100, variable cost is $70, and contribution margin is $30 (30 percent of price), then a 10 percent price cut to $90 drops contribution margin to $20. To hold the same total contribution dollars as before, you need 50 percent more units (because 1.5 * $20 = $30). Always recompute break-even after price moves.
Can I use break-even analysis before launching a new product or business?
Yes. Enter projected fixed costs, estimated variable costs per unit, and planned price to see required volume at break-even. Then compare that volume to what you can realistically sell. If break-even needs far more demand than your market can support, you may need a different price, lower costs, or a different offer before you launch.
How does break-even analysis relate to profit margin?
Break-even analysis finds the volume where profit crosses from negative to zero. Profit margin measures how much you keep per dollar of revenue after costs at a given volume above break-even. Use a break-even calculator for the floor, then use margin tools to judge earnings quality above that floor.
Does break-even analysis account for taxes?
Classic break-even uses pre-tax figures. For after-tax targets, adjust your required profit by tax rate with help from a tax professional. Example: to net $10,000 after a 25 percent rate on the margin above break-even, you solve pre-tax needs with your accountant's model. For day-to-day pricing, pre-tax break-even is still a strong guide.
What is the margin of safety and how do I calculate it?
Margin of safety is actual or projected sales minus break-even sales. As a percent of actual sales, it is (actual minus break-even) divided by actual, times 100. It shows how far demand can fall before losses start. It is a simple risk gauge on top of break-even units or revenue.
Related Free Calculators
Pair this break-even calculator with other planning tools
After you use the break-even calculator for your floor, these tools help with pricing above break-even and with cost detail.
- Profit Margin CalculatorAfter break-even, use this to see how much of each revenue dollar you keep at your actual volume.
- Markup CalculatorSet selling price from cost and a target markup. Useful alongside break-even planning.
- Labor Cost CalculatorCompute true hourly labor cost including taxes and overhead when labor drives your variable cost per unit.
Plan Smart. Sell Enough. Get Paid.
Break-even is the starting line, not the finish
Every business has a break-even point. Owners who know theirs can price and budget with a clear target. Revisit the break-even calculator when costs or price change, then keep invoicing disciplined so every sale counts.
Invoice Mama can help with fast, clear invoicing once your plan is set.
You've done the math - now make sure every sale is tracked and invoiced properly. Invoice Mama helps small businesses and freelancers create professional invoices in seconds with AI. No templates, no hassle. Just describe the job and send.