Break-Even Calculator
Find the exact sales volume where revenue covers all costs. Enter fixed costs, variable cost per unit, and selling price to see your break-even point instantly.
⚖️ What is Break-Even Analysis?
Break-even analysis is a financial calculation that tells you the exact sales volume at which total revenue equals total costs, producing neither profit nor loss. At the break-even point, every dollar of revenue covers exactly the costs associated with generating it. Any unit sold above break-even contributes directly to profit; any unit below it represents a loss. It is one of the most widely used tools in business planning, pricing, and capital budgeting.
The concept is built on three inputs: fixed costs (costs that do not change with volume, such as rent, salaries, and insurance), variable costs per unit (costs that scale directly with production or sales, such as materials, packaging, and direct labor), and selling price per unit. From these three numbers, the contribution margin per unit is derived (selling price minus variable cost), and the break-even point is the number of units needed for cumulative contribution margin to fully cover fixed costs. Break-even revenue is simply break-even units multiplied by the selling price.
Businesses use break-even analysis across a wide range of decisions. A new product team uses it to assess whether projected demand is sufficient to justify the fixed cost investment before launch. A restaurant owner uses it to determine how many covers per day are needed to pay rent and staff. A manufacturer uses it to evaluate whether a price cut that increases volume still results in profitability. A startup investor uses months-to-break-even as a proxy for financial health and burn rate sustainability.
The contribution margin percentage (contribution margin per unit divided by selling price) is arguably the most useful single output. It tells you what fraction of each revenue dollar is available to cover fixed costs and profit. A 40% CM ratio means that 40 cents of every dollar earned goes toward fixed costs and eventual profit, while 60 cents covers variable costs. Products with high CM ratios are more resilient to volume swings and fixed cost increases, making them more attractive for scaling. This calculator shows both the absolute contribution margin per unit and the percentage, so you can compare products, pricing scenarios, and business models side by side.
📐 Formula
The denominator (Selling Price minus Variable Cost per Unit) is the contribution margin. It represents the amount each unit sold contributes toward covering fixed costs. The formula assumes a linear relationship between volume and costs, a constant selling price at all volumes, and that all units produced are sold. For businesses with multiple products, a weighted average contribution margin based on product mix is used to compute a blended break-even point.
📖 How to Use This Calculator
Steps
💡 Example Calculations
Example 1 - Small Bakery
Fixed costs $5,000/month, variable cost $2/unit, selling price $5/unit
Example 2 - Restaurant
Fixed costs $15,000/month, variable cost $8 per cover, menu average $25
Example 3 - SaaS Product
Fixed costs $30,000/month, variable cost $5 per subscription, price $50/month
Example 4 - Profit Target: Manufacturing Product
Fixed costs $20,000, variable cost $15/unit, price $40/unit, target profit $10,000
❓ Frequently Asked Questions
🔗 Related Calculators
What is the break-even point in business?
The break-even point is the sales volume at which total revenue exactly equals total costs, producing neither profit nor loss. Below break-even, the business loses money; above it, the business earns profit. It is calculated as BEP (units) = Fixed Costs divided by Contribution Margin per Unit, where Contribution Margin = Selling Price minus Variable Cost per Unit.
What is the formula for break-even analysis?
BEP (units) = Fixed Costs / (Selling Price minus Variable Cost per Unit). BEP (revenue) = Fixed Costs / Contribution Margin Ratio, where CM Ratio = (Selling Price minus Variable Cost) / Selling Price. For a profit target, Units Required = (Fixed Costs plus Target Profit) / Contribution Margin per Unit.
What is contribution margin and how is it calculated?
Contribution margin is the amount each unit sold contributes toward covering fixed costs and then generating profit. Formula: CM = Selling Price minus Variable Cost per Unit. Once the cumulative contribution from all units sold equals total fixed costs, the business reaches break-even. Every unit sold beyond that point adds the full contribution margin directly to profit.
How do I calculate break-even point in revenue dollars?
Break-Even Revenue = Break-Even Units multiplied by Selling Price. Alternatively, Break-Even Revenue = Fixed Costs divided by Contribution Margin Ratio (where CM Ratio = Contribution Margin per Unit divided by Selling Price). This tells you the total dollar sales you must reach to cover all costs.
What is a good break-even point for a small business?
There is no universal benchmark. The key question is how quickly you can realistically reach break-even. Startups are often assessed by months-to-break-even. A business that reaches break-even within 6 to 12 months from launch is considered healthy by most investors. The lower the break-even volume relative to your realistic sales capacity, the more financial cushion you have during slow periods.
What are fixed costs vs variable costs in break-even analysis?
Fixed costs do not change with production or sales volume (rent, salaries, insurance, equipment depreciation). Variable costs rise directly with each unit produced or sold (raw materials, direct labor, packaging, sales commissions). Contribution margin covers fixed costs first. Once fixed costs are fully covered, the remaining contribution margin becomes profit on every additional unit.
How does break-even analysis help with pricing decisions?
By calculating break-even at different price points, you can see exactly how a price change affects required sales volume. A 10% price increase typically reduces the break-even point more dramatically than a 10% cost reduction, because it directly raises contribution margin.
What happens to break-even point if fixed costs increase?
The break-even point rises proportionally. If fixed costs increase by 20%, break-even units also increase by exactly 20%, assuming price and variable cost remain unchanged. This is why businesses minimize fixed cost commitments in early stages when sales volume is uncertain. Each new fixed cost commitment raises the minimum revenue needed to stay profitable.
What is margin of safety and how does it relate to break-even?
Margin of safety is the difference between actual (or planned) sales volume and the break-even sales volume. It shows how far sales can fall before the business starts losing money. Margin of Safety % = (Actual Sales minus Break-Even Sales) / Actual Sales multiplied by 100. A margin of safety above 25% is generally considered comfortable for most businesses.
What are the main limitations of break-even analysis?
Break-even analysis assumes: (1) selling price is constant at all volumes, (2) variable costs are perfectly linear with volume, (3) fixed costs do not change, (4) all units produced are sold with no inventory buildup. In reality, volume discounts change price, bulk purchasing reduces variable costs, and step-fixed costs create threshold effects. Use break-even as a planning guide, not a precise forecast.
How do I use break-even analysis for a new product launch?
Start by listing all fixed costs committed to the launch (tooling, marketing, salaries, rent). Estimate variable cost per unit and your planned selling price. Calculate break-even units. Then research your addressable market size and realistic conversion rates to see whether break-even volume is achievable. If the required volume exceeds your market, adjust price upward or find ways to reduce fixed or variable costs before launch.