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. Use this calculator to model three or four pricing scenarios before finalizing your price.

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.

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.

Fixed Costs$50,000

$0$500k

Variable Cost per Unit$30

$0$500

Selling Price per Unit$50

$0$1,000

Fixed Costs$50,000

$0$500k

Variable Cost per Unit$30

$0$500

Selling Price per Unit$50

$0$1,000

Target Profit$20,000

$0$200k

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⚖️ 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

BEP (units) = Fixed Costs ÷ (Selling Price − Variable Cost per Unit)

BEP = break-even point (units)

Fixed Costs = total costs that do not vary with volume (rent, salaries, insurance)

Selling Price = revenue received per unit sold

Variable Cost per Unit = direct cost per unit produced or sold

Contribution Margin (CM) = Selling Price − Variable Cost per Unit

CM Ratio = CM ÷ Selling Price (expressed as a percentage)

Break-Even Revenue = BEP (units) × Selling Price = Fixed Costs ÷ CM Ratio

Profit Target Formula: Units Required = (Fixed Costs + Target Profit) ÷ CM per Unit

Example: Fixed Costs = $50,000, Variable Cost = $30/unit, Selling Price = $50/unit. CM = $20/unit. BEP = 50,000 ÷ 20 = 2,500 units. Break-Even Revenue = 2,500 × $50 = $125,000. CM Ratio = 20 ÷ 50 = 40%.

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

Enter your total fixed costs - Type your monthly or annual fixed costs (rent, salaries, insurance, depreciation) into the Fixed Costs field or use the slider. These are costs you pay regardless of how many units you sell.

Enter variable cost per unit - Enter the direct cost to produce or deliver a single unit (raw materials, direct labor, packaging, commissions). This is the cost that increases with every additional unit you make or sell.

Enter selling price per unit - Enter the price you charge customers per unit. The calculator validates that selling price exceeds variable cost; if it does not, break-even is mathematically impossible and the calculator will alert you.

Read the break-even results - The results panel shows break-even units, break-even revenue, contribution margin per unit, and contribution margin percentage. All values update live as you adjust sliders.

Switch to Profit Target mode - Click the Profit Target tab, enter your desired profit amount, and see the exact units and revenue needed to achieve that profit goal above the break-even point.

💡 Example Calculations

Example 1 - Small Bakery

Fixed costs $5,000/month, variable cost $2/unit, selling price $5/unit

Contribution Margin = $5.00 − $2.00 = $3.00 per loaf.

Break-Even Units = $5,000 ÷ $3.00 = 1,667 loaves per month.

Break-Even Revenue = 1,667 × $5.00 = $8,333/month. CM Ratio = 3 ÷ 5 = 60%.

Break-Even = 1,667 units | Revenue = $8,333/month | CM = 60%

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Example 2 - Restaurant

Fixed costs $15,000/month, variable cost $8 per cover, menu average $25

Contribution Margin = $25.00 − $8.00 = $17.00 per cover (food, drink, and packaging costs).

Break-Even Covers = $15,000 ÷ $17.00 = 882 covers per month, or about 29 covers per day (assuming 30 operating days).

Break-Even Revenue = 882 × $25 = $22,059/month. CM Ratio = 17 ÷ 25 = 68%.

Break-Even = 882 covers/month | Revenue = $22,059/month | CM = 68%

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Example 3 - SaaS Product

Fixed costs $30,000/month, variable cost $5 per subscription, price $50/month

Contribution Margin = $50.00 − $5.00 = $45.00 per subscription (server costs, support time, payment processing).

Break-Even Subscriptions = $30,000 ÷ $45.00 = 667 active subscriptions.

Break-Even MRR = 667 × $50 = $33,333/month. CM Ratio = 45 ÷ 50 = 90%. High CM ratio makes SaaS resilient to fixed cost increases.

Break-Even = 667 subscriptions | MRR = $33,333 | CM = 90%

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Example 4 - Profit Target: Manufacturing Product

Fixed costs $20,000, variable cost $15/unit, price $40/unit, target profit $10,000

Contribution Margin = $40.00 − $15.00 = $25.00 per unit.

Break-Even Units = $20,000 ÷ $25 = 800 units. Units for $10,000 profit = ($20,000 + $10,000) ÷ $25 = 1,200 units.

Revenue Needed = 1,200 × $40 = $48,000. Profit Margin = $10,000 ÷ $48,000 = 20.8%. Units above break-even = 1,200 − 800 = 400 units.

Units Needed = 1,200 | Revenue = $48,000 | Profit Margin = 20.8%

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❓ Frequently Asked Questions

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 equals Selling Price minus Variable Cost per Unit.

What is the break-even formula?+

BEP (units) = Fixed Costs / (Selling Price minus Variable Cost per Unit). BEP (revenue) = Fixed Costs / Contribution Margin Ratio, where CM Ratio = Contribution Margin per Unit / Selling Price. For a profit target, Units Required = (Fixed Costs plus Target Profit) / Contribution Margin per Unit. Example: fixed costs $50,000, selling price $50, variable cost $30. CM = $20. BEP = 50,000 / 20 = 2,500 units.

What is contribution margin in break-even analysis?+

Contribution margin (CM) is the amount each unit sold contributes toward covering fixed costs, and then toward profit once fixed costs are fully covered. Formula: CM per Unit = Selling Price minus Variable Cost per Unit. CM Ratio = CM per Unit / Selling Price, expressed as a percentage. A 40% CM ratio means 40 cents of every dollar of revenue is available for fixed costs and profit. Higher CM ratios give businesses more financial flexibility.

How do I calculate break-even revenue in dollars?+

Break-Even Revenue = Break-Even Units multiplied by Selling Price. Alternatively, Break-Even Revenue = Fixed Costs divided by Contribution Margin Ratio. For example, if fixed costs are $30,000 and contribution margin ratio is 40%, break-even revenue = $30,000 / 0.40 = $75,000. This is the total dollar sales figure you must reach to cover all costs before earning any profit.

What are fixed costs vs variable costs?+

Fixed costs do not change with production or sales volume: rent, management salaries, insurance, equipment depreciation, and annual software licenses. Variable costs rise directly with each unit produced or sold: raw materials, direct labor, packaging, shipping, and sales commissions. Fixed costs must be covered before any profit is possible; variable costs are recovered through the selling price of each unit. Accurately classifying costs into these two buckets is the most important step in break-even analysis.

How does break-even analysis help with pricing?+

A 10% price increase typically reduces the break-even point by more than a 10% reduction in variable costs, because it directly raises contribution margin. For example, raising price from $50 to $55 with $30 variable cost raises CM from $20 to $25, reducing break-even by 20%. Use the calculator to model three or four price points and compare the break-even units required at each. The goal is to find a price where break-even is well within your realistic sales capacity.

What happens to break-even point if fixed costs rise?+

Break-even point rises proportionally with fixed costs when contribution margin stays constant. A 20% increase in fixed costs raises the break-even point by exactly 20%. This is why businesses try to keep fixed cost commitments minimal in the early stages, when sales volume is uncertain. Each new fixed cost (a new hire, a long-term lease, a software contract) permanently raises the minimum revenue needed to reach profitability.

What is the margin of safety?+

Margin of safety is the difference between actual (or budgeted) sales and break-even sales, expressed as a percentage of actual sales. Formula: MOS% = (Actual Sales minus Break-Even Sales) / Actual Sales times 100. A MOS of 25% means sales could fall 25% before the business starts losing money. Most analysts consider a margin of safety above 20 to 25% to be comfortable. Use the Profit Target mode in this calculator to set a target that includes a desired safety margin above break-even.

How many units do I need to sell to make a specific profit?+

Use the Profit Target mode. The formula is: Units Required = (Fixed Costs plus Target Profit) / Contribution Margin per Unit. For example, if fixed costs are $20,000, contribution margin is $25 per unit, and your profit target is $10,000: units required = ($20,000 + $10,000) / $25 = 1,200 units. This is 400 units above the basic break-even of 800 units. The corresponding revenue is 1,200 times the selling price.

What are the limitations of break-even analysis?+

Break-even analysis makes several simplifying assumptions: (1) selling price is constant at all volumes (no quantity discounts), (2) variable costs are perfectly linear with volume (no bulk purchasing savings), (3) fixed costs are truly fixed (no step-costs when capacity thresholds are crossed), and (4) all units produced are sold (no unsold inventory). In practice, all four assumptions can break down. Use break-even as a directional planning tool and test your results against realistic volume, price, and cost scenarios.

How do I use break-even analysis for a new product launch?+

List all fixed costs committed to the launch (tooling, initial marketing spend, dedicated staff, equipment). Estimate variable cost per unit from supplier quotes or manufacturing estimates. Set a realistic selling price based on market research. Calculate break-even units. Then research your addressable market size and conversion rate assumptions to see whether the required volume is achievable. If the required break-even volume exceeds your realistic market reach, adjust price upward, reduce fixed or variable costs, or reconsider the launch timeline before committing capital.

🔗 Related Calculators

📌 Quick Tips

💡If your contribution margin percentage is below 30%, even small increases in fixed costs will significantly raise your break-even point. Aim for at least 40% contribution margin before scaling operations.

💡Break-even analysis assumes all units produced are sold. Factor in a realistic sell-through rate (typically 70 to 90%) when setting actual production targets, so your real break-even is higher than the calculated figure.

💡Use Profit Target mode to reverse-engineer your sales goal from a profit objective, then check whether that volume is realistically achievable in your market before committing to fixed costs.

💡Fixed costs are not truly fixed at all production levels. Watch for step-fixed costs (new equipment, extra staff) that jump at capacity thresholds, as these raise your break-even point in tiers and can make a profitable plan unprofitable at certain volumes.

💡Contribution margin percentage is more useful than absolute contribution margin for comparing products. A product with 60% CM on a $20 item contributes more per dollar of revenue than a 40% CM product at $100 per unit.