Break-Even Calculator

What Is Break-Even Analysis?

Break-even analysis is the process of finding the exact point where your total revenue equals your total costs. It answers a deceptively simple question that every business owner needs to know before signing a lease, launching a product, or setting a price: how much do I need to sell just to not lose money?

At the break-even point, your business generates zero profit and zero loss — revenue covers every dollar of cost, and not a penny more. Above that level, each additional unit sold generates pure profit equal to the contribution margin per unit. Below it, you are burning through cash to cover fixed costs that your sales cannot yet support.

Break-even analysis is one of the most practical tools in business planning precisely because it does not require complex forecasting or historical data. You only need three numbers: your fixed costs per period, your selling price per unit, and your variable cost per unit. Everything else — break-even units, break-even revenue, contribution margin, and profit at any sales volume — follows directly from those inputs.

Business schools teach break-even analysis as part of cost-volume-profit (CVP) analysis, a broader framework that explores how changes in cost structure and volume affect profit. But the core break-even calculation is simple enough to run on a napkin — or this calculator — and meaningful enough to make or break a business decision.

The Break-Even Formula Explained

The break-even formula has two common forms. The first gives you the break-even point in units:

The second gives you the break-even point in revenue dollars, using the contribution margin ratio:

Both formulas give you the same answer approached from different directions. The revenue formula is more useful when you sell multiple products at different prices and cannot easily define a single “unit.” Service businesses, restaurants, and SaaS companies often find the revenue-based break-even more actionable.

Understanding Fixed vs. Variable Costs

Accurately categorizing your costs is the most important step in break-even analysis. Miscategorizing a significant cost will send your break-even figure in the wrong direction and may lead to real pricing or planning errors.

Fixed costs are costs that do not change with output. They exist regardless of whether you sell zero units or ten thousand units in a period. Common fixed costs include:

• Office or warehouse rent
• Salaried employee wages (not hourly)
• Annual or monthly software subscriptions
• Insurance premiums
• Loan repayments and lease payments
• Depreciation on equipment
• Website hosting and domain fees

Variable costs scale directly with the number of units you produce or sell. If you sell nothing, you pay nothing in variable costs. Common variable costs include:

• Raw materials and components
• Packaging and shipping
• Payment processing fees (e.g., 2.9% per transaction)
• Sales commissions paid per sale
• Hourly production or fulfillment labor
• Per-unit manufacturing costs

Some costs are semi-variable — they have a fixed component and a variable component. A utility bill typically has a fixed base charge plus a variable usage charge. An employee may receive a base salary (fixed) plus performance bonuses (variable). For break-even analysis, split semi-variable costs: assign the fixed portion to fixed costs and the per-unit or per-transaction portion to variable costs.

A common mistake is including owner’s salary as a variable cost because it feels tied to revenue. In most cases, it should be treated as a fixed cost — it is paid regardless of how many units were sold that month.

Contribution Margin: The Engine of Break-Even

The contribution margin is the most important number in break-even analysis. It tells you exactly how much each sale “contributes” toward covering fixed costs and generating profit, after accounting for what it cost to produce or deliver that unit.

A high contribution margin means you need fewer sales to cover fixed costs and each unit beyond break-even generates substantial profit. A low contribution margin means you need many more sales to cover the same fixed costs — and you are very exposed to any increase in variable costs or any decrease in selling price.

The contribution margin ratio (CM ratio) is the contribution margin expressed as a percentage of the selling price. A CM ratio of 60% means that for every $1 in revenue, $0.60 goes toward fixed costs and profit, and $0.40 covers variable costs. Software businesses typically have very high CM ratios (70–90%+) because their variable cost per additional user is nearly zero. Physical goods businesses often have lower CM ratios (30–60%) because materials, packaging, and shipping are significant per-unit costs. Service businesses vary widely depending on labor intensity.

When evaluating a product line or pricing a new offering, the CM ratio is a faster comparison than running full break-even calculations for each option. A product with a 70% CM ratio will generate more profit at any given revenue level than a product with a 40% CM ratio — and it reaches break-even faster.

Break-Even in Practice: Three Worked Examples

Example 1 — E-Commerce Product Business

Suppose you sell handmade candles online. Your monthly fixed costs are $2,400: $1,200 in studio rent, $600 in a Shopify subscription and advertising retainer, $400 in salaried part-time help, and $200 in insurance and miscellaneous overhead.

Each candle sells for $32. Your variable cost per candle is $11.50: $6 in wax and fragrance, $2 in jars and labels, $2.50 in shipping materials, and $1 in payment processing fees.

Contribution margin = $32 − $11.50 = $20.50 per candle. CM ratio = $20.50 ÷ $32 = 64.1%.

Break-even units = $2,400 ÷ $20.50 = 117.1 candles per month (ceiling: 118 candles). Break-even revenue = 117.1 × $32 = $3,747. In other words, you need to sell at least 118 candles per month — roughly 4 candles per day — before you stop losing money. Every candle beyond 118 adds $20.50 to your monthly profit.

If you want to earn $1,500 per month in profit, the target income analysis gives you: ($2,400 + $1,500) ÷ $20.50 = 190.2 candles per month (ceiling: 191 candles), generating $6,112 in revenue.

Example 2 — Freelance Consultant

A freelance marketing consultant has monthly fixed costs of $1,800: $500 in home office overhead, $300 in professional tools and subscriptions, $600 in health insurance, and $400 in accounting and administrative costs.

She charges $150 per hour. Her variable cost per billable hour is $15: $5 in software charges tied to project hours, $7 in subcontracted research assistance, and $3 in payment processing. Her contribution margin is $150 − $15 = $135 per hour. CM ratio = 90%.

Break-even hours = $1,800 ÷ $135 = 13.3 hours per month. Break-even revenue = 13.3 × $150 = $2,000. This means she needs just 14 billable hours — roughly 3.5 hours per week — to cover all her monthly costs. Every hour beyond that adds $135 to her income before taxes. At 40 billable hours per month, her monthly profit is (40 − 13.3) × $135 = $3,604.50.

The high CM ratio typical of service businesses is visible here: at 90%, almost every dollar billed becomes available income once break-even is cleared. The critical variable for a freelancer is not the rate — it is the number of billable hours, which is limited by time and client demand.

Example 3 — SaaS Startup

A two-person SaaS company sells a project management tool at $49 per user per month. Their monthly fixed costs are $18,000: $8,000 in co-founder salaries, $4,000 in cloud infrastructure (at current scale), $3,000 in contractor development time, $2,000 in marketing tools, and $1,000 in legal and administrative fees.

Their variable cost per user per month is $4.80: $3.50 in cloud compute and storage that scales with usage, $0.80 in payment processing, and $0.50 in customer support tooling. Contribution margin = $49 − $4.80 = $44.20 per user per month. CM ratio = 90.2%.

Break-even users = $18,000 ÷ $44.20 = 407 users. Break-even revenue = 407 × $49 = $19,943 per month (approximately $240,000 ARR). This is a concrete, measurable goal: reach 407 active paying users and the company stops burning cash. At 1,000 users, monthly profit = (1,000 − 407) × $44.20 = $26,211.

Note that in a SaaS business, the “variable cost” calculation assumes the infrastructure cost scales linearly with users. In practice, cloud costs often have step-function increases (you upgrade to a larger server tier), which means the actual break-even is slightly higher than the linear model predicts at scale. This is a case where revisiting the fixed/variable split as the business grows is important.

How to Lower Your Break-Even Point

Because the break-even formula only has three variables — fixed costs, selling price, and variable cost — there are exactly three levers to pull.

1. Reduce fixed costs. This directly shrinks the numerator and immediately lowers break-even. Common tactics: negotiate office lease terms or switch to coworking; eliminate redundant software subscriptions; move from salaried roles to variable-rate contractors for non-core functions; refinance debt to reduce monthly payments. Fixed cost reductions are the fastest path to a lower break-even because they take effect immediately regardless of sales volume.

2. Reduce variable costs per unit. This widens the contribution margin, which reduces the number of units needed to cover fixed costs. Tactics include buying materials in bulk to get volume discounts; renegotiating supplier terms; improving manufacturing efficiency to reduce scrap and labor per unit; switching to cheaper packaging; or using a different shipping carrier. Variable cost reductions compound — every unit sold from now on has a higher margin.

3. Raise the selling price. A price increase has a dollar-for-dollar effect on contribution margin. If your selling price goes from $50 to $55 with no change in variable cost, your contribution margin improves by $5 per unit — and your break-even drops proportionally. The risk, of course, is that higher prices may reduce demand. Price elasticity varies by market: commodity products are highly price-sensitive; differentiated or premium products often sustain meaningful price increases without significant volume loss. Running a price increase test on a segment before rolling it out site-wide is standard practice.

In practice, the fastest path to a lower break-even is usually a combination of all three: cut a few unnecessary fixed costs, negotiate one or two supplier relationships, and test a modest price increase. A 5% improvement across each lever can reduce break-even by 10–20% depending on the cost structure.

Target Profit Analysis: Planning Beyond Break-Even

Breaking even means you are not losing money — but it is not why you are in business. The optional Target Profit field in this calculator extends break-even analysis into profit planning. It answers the question: “How many units do I need to sell to hit a specific profit goal?”

The formula is identical to break-even, except that target profit is added to fixed costs in the numerator:

This is useful for setting sales quotas, evaluating whether a new product can support its share of overhead, and determining whether a particular market segment is worth pursuing given realistic sales expectations. A product that requires 10,000 units sold to generate $5,000 in profit is a very different business than one that requires 200 units for the same result.

Target profit analysis is also how professional investors and lenders evaluate startups: they want to see a clear path from current losses to profitability, with explicit assumptions about the sales volume required and whether that volume is realistic given market size and competition.

Common Break-Even Mistakes to Avoid

Forgetting your own salary.Many small business owners exclude their own compensation when listing fixed costs, then wonder why they are not making any money even after “breaking even.” If you work in the business, your compensation is a cost. Include a market-rate salary or at minimum your actual personal financial requirements as a fixed cost.

Using revenue instead of units. Break-even is calculated in units, not dollars of revenue, when you have a per-unit variable cost. Confusing the two leads to underestimating the number of sales required because revenue does not reflect the variable cost of each sale.

Ignoring returns and refunds. If 5–10% of your sales result in returns, your effective revenue per sale is lower than the listed price. Adjust your effective selling price to account for your return rate when running break-even calculations for a product with significant return risk.

Treating the break-even as a target. Break-even is the minimum, not the goal. Many businesses set break-even as the sales quota, which means they budget for zero profit and leave no room for unexpected costs. Plan for profitability above break-even, not at it.

Not revisiting as the business evolves. Your cost structure changes as you scale. Infrastructure costs may jump when you hit a capacity threshold. Negotiated supplier rates improve at higher volumes. The break-even calculation you ran at launch may not be accurate at 10× the size. Recalculate quarterly at minimum.

Break-Even for Service Businesses and Freelancers

Service businesses and freelancers can use this calculator by redefining “unit” as a billable hour, a project, a session, or a monthly retainer. The selling price is the rate charged per unit of service; the variable cost is any cost that scales with delivering that unit — software charges tied to project work, subcontracted labor, travel costs, or client-specific expenses.

Service businesses typically have high contribution margins (70–95%) because their primary variable cost is time — and time is not directly paid per hour in most salaried-equivalent structures. This means break-even in hours is often quite low, and the key constraint is not break-even but rather capacity: there are only so many billable hours available in a month.

For a service business, the more important analysis is often: “At what utilization rate (percentage of available hours that are billable) do I reach my income target?” This connects break-even analysis to capacity planning and pricing strategy — if you can only bill 50% of available hours, your effective hourly rate is halved, which means your break-even in terms of billable hours is also effectively halved as a proportion of your time.