What is a break-even point?

Break-even point is the sales volume where total revenue equals total costs and profit is zero. Every unit sold beyond this point generates profit.

How do you calculate break-even units?

Break-even units equals fixed costs divided by the contribution margin per unit, which is the selling price minus the variable cost per unit. For example, if fixed costs are $10,000 and contribution margin is $25 per unit, you need to sell 400 units to break even.

What does margin of safety mean in break-even analysis?

Margin of safety measures how much current or projected sales can fall before reaching the break-even point. It is calculated as (expected sales minus break-even sales) divided by expected sales, expressed as a percentage. A margin of safety below 20% is generally considered risky.

What is the difference between fixed costs and variable costs?

Fixed costs remain constant regardless of production volume (rent, insurance, salaries, equipment leases). Variable costs change directly with production volume (raw materials, direct labor, packaging, shipping). Break-even analysis uses both to determine the minimum sales volume needed to cover all expenses.

Can break-even analysis be used for service businesses or only physical products?

Break-even analysis works for any business model. For service businesses, replace physical units with billable hours, customers served, projects completed, or subscription seats. Fixed costs remain overhead expenses, while variable costs are the labor and materials directly tied to each service delivered.

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Break-Even Calculator

Estimate the exact unit volume and revenue needed to cover your costs.

Cost Inputs

Fixed Costs Variable Cost / Unit Selling Price / Unit Expected Units (for Margin of Safety)

Break-Even Results

Calculate and complete quick access to view your break-even point.

Home / Finance / Break-Even Calculator · Last updated June 04, 2026 · Expert reviewed

How to use this calculator for a real decision

Running a break-even analysis helps you answer one of the most important questions in business: how many units do I need to sell before I stop losing money and start turning a profit? This calculator simplifies that process into three inputs. Start by entering your fixed costs — the expenses that stay the same regardless of how much you produce, such as rent, insurance, salaries, equipment leases, and software subscriptions. Next, enter your variable cost per unit, which covers materials, direct labor, packaging, shipping, and any other cost that scales with every item you make or service you deliver. Finally, enter your selling price per unit — the amount you charge your customers.

The calculator instantly computes your break-even point in units and revenue, along with your contribution margin per unit (the dollar amount each sale contributes to covering fixed costs) and your margin of safety (the buffer between your expected sales and the break-even threshold). The built-in chart draws two lines — one for total revenue and one for total cost — that intersect at your exact break-even volume, making it easy to visualize profitability at different sales levels.

Use the calculator to model real-world scenarios before committing capital. For example, test what happens if your supplier raises material prices by 10%, or if a competitor forces you to drop your selling price by 15%. Adjust the sliders or type precise numbers to see how each change shifts the break-even point. You can also enter your expected sales volume to calculate the margin of safety — a key metric that tells you how much room you have before slipping into a loss. This kind of sensitivity analysis is essential for pricing strategy, product launches, equipment purchases, and budgeting.

Worked example: a bakery launching a new cake line

The scenario. A small artisan bakery in Portland wants to add a specialty layer cake to its menu. The owner estimates one-time fixed costs of $8,000 per month, which includes a dedicated display case lease ($2,000), additional marketing for the launch ($1,500), extra part-time staff training and salary ($3,000), and permits and liability insurance adjustments ($1,500). Variable costs per cake are $12 — this covers high-quality ingredients (organic flour, butter, eggs, vanilla), branded packaging, cake boxes, and the direct labor for mixing, baking, frosting, and decorating each cake. The bakery plans to sell each cake for $35.

The calculation. Break-even point in units = Fixed Costs / (Selling Price - Variable Cost Per Unit) = $8,000 / ($35 - $12) = $8,000 / $23 = 348 cakes per month. That is about 12 cakes per day if the bakery is open 28 days a month. The break-even revenue is 348 x $35 = $12,174 per month. The contribution margin per cake is $23, meaning each cake sold beyond 348 contributes $23 of pure profit.

The profit picture. If the bakery sells 500 cakes per month, total profit is ($35 - $12) x (500 - 348) = $23 x 152 = $3,496 per month. The margin of safety is (500 - 348) / 500 = 30.4%, giving the owner a comfortable cushion. If sales dip to 400 cakes, profit drops to $23 x 52 = $1,196 per month, still positive. Below 348 cakes, the bakery loses money on every cake sold. This analysis helps the owner decide whether the new product line is worth the risk and whether $35 is the right price — raising it to $40 would lower the break-even to 286 cakes but might reduce demand.

Common mistakes to avoid

Underestimating fixed costs: Many entrepreneurs forget to include insurance premiums, software-as-a-service subscriptions, loan interest payments, equipment depreciation, professional fees (accounting, legal), and property taxes. The result is a break-even that looks artificially low, leading to cash flow surprises. Always add a 15-20% contingency buffer to your fixed cost estimate to account for hidden or irregular expenses.
Using average cost instead of marginal cost for variable costs: The correct variable cost for break-even analysis is the incremental cost of producing one additional unit, not the average cost across all units. Average cost may include fixed allocations that distort the calculation. For example, if you spread rent (a fixed cost) into the per-unit cost, you are double-counting it. Stick strictly to costs that change when you make one more item: raw materials, direct labor, packaging, and per-unit shipping fees.
Ignoring the price-demand relationship: A higher selling price lowers the break-even point mathematically, but in the real world, higher prices usually reduce the number of units customers are willing to buy. Break-even analysis tells you the minimum volume needed to avoid a loss, but it does not tell you whether that volume is achievable at the chosen price. Pair your break-even with market research, competitor pricing analysis, and demand forecasting to get the full picture.
Neglecting the time dimension: Break-even analysis is typically a single-period model — it assumes all fixed costs are incurred and all units are sold within the same period, usually a month or a year. In practice, you may incur fixed costs (equipment purchase, marketing campaign) months before you see significant sales. Consider a payback period analysis alongside break-even to understand how long cash will be negative.
Confusing cash break-even with accounting break-even: Non-cash expenses like depreciation lower your accounting profit but do not consume cash. For cash flow planning, you may want to calculate a cash break-even that excludes depreciation and other non-cash charges. Many startups fail not because they are unprofitable on paper, but because they run out of cash while waiting for receivables to arrive.
Applying a single break-even to a multi-product business: If you sell multiple products with different margins, a single break-even number is misleading. Use a weighted-average contribution margin based on your expected product mix, or run separate break-even analyses for each product line.

Key terminology

Fixed costsExpenses that remain constant regardless of production volume: rent, insurance, salaries, equipment leases, loan payments, software subscriptions, and property taxes. These must be paid even if you produce zero units.

Variable costsExpenses that change in direct proportion to production volume: raw materials, direct labor, packaging, shipping, sales commissions, credit card processing fees, and per-unit royalty payments.

Contribution marginThe selling price minus the variable cost per unit. This is the amount each unit sold contributes toward covering fixed costs and then generating profit. A higher contribution margin means fewer units needed to break even.

Margin of safetyA measure of downside risk: (Expected Sales - Break-Even Sales) / Expected Sales, expressed as a percentage. A 40% margin of safety means sales can fall 40% before reaching the break-even point. Values below 20% are considered risky for most businesses.

Operating leverageThe ratio of fixed costs to variable costs in your cost structure. High operating leverage means a larger proportion of fixed costs — making profits more sensitive to changes in sales volume. This amplifies both gains and losses. Capital-intensive industries (manufacturing, airlines) have high operating leverage; service businesses tend to have lower leverage.

Break-even pointThe sales volume (in units or revenue) at which total revenue equals total costs, resulting in zero profit or loss. Every unit sold beyond this point generates pure profit.

Contribution margin ratioContribution margin divided by selling price, expressed as a percentage. For example, if you sell a product for $100 with a $40 contribution margin, your contribution margin ratio is 40%. This ratio tells you how much of each revenue dollar is available to cover fixed costs.

Methodology and sources

The break-even formula used by this calculator is derived from fundamental cost-volume-profit (CVP) analysis, a core concept in managerial accounting and financial planning. The formulas are:

Break-Even Units = Fixed Costs / (Selling Price - Variable Cost Per Unit)
Break-Even Revenue = Break-Even Units x Selling Price
Contribution Margin Per Unit = Selling Price - Variable Cost Per Unit
Contribution Margin Ratio = Contribution Margin Per Unit / Selling Price x 100%
Margin of Safety = (Expected Revenue - Break-Even Revenue) / Expected Revenue x 100%
Profit at Given Volume = (Selling Price - Variable Cost Per Unit) x (Actual Units - Break-Even Units)

The chart component plots two linear functions across a range of sales volumes: Total Revenue = Price x Quantity and Total Cost = Fixed Costs + (Variable Cost Per Unit x Quantity). The intersection of these two lines is the break-even point. The underlying math assumes linear cost and revenue relationships, which is a simplification — in reality, variable costs may decrease at higher volumes due to economies of scale, and selling price may need to be lowered to drive additional volume.

Recommended reading for deeper understanding:

Investopedia — Break-Even Analysis — comprehensive overview with real-world examples
Harvard Business Review — A Refresher on Break-Even Analysis — practical guide for managers
Corporate Finance Institute — Break-Even Analysis — financial modeling perspective
U.S. Small Business Administration — Market Research — for demand estimation alongside break-even

Frequently asked questions

What is a good break-even point?

A healthy break-even point typically falls between 20% and 40% of your estimated market demand. For example, if you expect to sell 1,000 units per month in a given market, a break-even at 250 to 400 units gives you a strong margin of safety (60-80%). If your break-even exceeds 60% of expected demand, you have very little room for error — any small shortfall in sales will result in a loss. Investors and lenders generally look for break-even points below 50% of projected sales before committing capital.

How can I lower my break-even point?

There are three primary levers. First, reduce fixed costs — negotiate cheaper rent, switch to lower-cost software, outsource non-core functions, or sublease unused space. Second, lower variable costs — find alternative suppliers, buy in bulk for volume discounts, improve production efficiency, reduce waste, or automate parts of the production process. Third, raise your selling price if the market will bear it — even a small price increase can significantly reduce the number of units needed to break even. Most businesses should pursue all three levers simultaneously for the best outcome.

What happens if I raise my prices?

Raising your price increases the contribution margin per unit, which mathematically lowers the number of units you need to sell to break even. However, higher prices typically reduce demand — this is the price elasticity of demand effect. The key question is whether the increase in contribution margin outweighs the potential loss in volume. Use the calculator to test different price points: enter a higher price and see the new break-even, then estimate whether you can realistically achieve that lower volume. If your market is price-sensitive, a small price increase may cause a disproportionately large drop in sales, making it counterproductive.

Is break-even analysis useful for service businesses?

Absolutely. Instead of physical units, use whatever metric represents a single deliverable: billable hours, consulting projects completed, customers served, subscription seats sold, or contracts signed. Fixed costs are your office rent, administrative salaries, software licenses, and professional insurance. Variable costs are the labor and materials directly tied to each service delivery — for a consulting firm, that is the consultant's hourly pay plus travel expenses; for a SaaS company, it is server hosting and customer support time per user. The same break-even formula applies directly.

What is the difference between cash break-even and accounting break-even?

Accounting break-even includes all costs — including non-cash expenses like depreciation, amortization, and accrued expenses. Cash break-even excludes non-cash charges and only considers actual cash outflows. For a startup or small business managing cash flow, the cash break-even is often more important because it tells you when you will stop burning cash. For example, if your fixed costs include $2,000/month in equipment depreciation (a non-cash expense), your cash break-even will be lower than your accounting break-even, meaning you reach positive cash flow sooner than you reach positive net income. Most lenders and investors want to see both numbers.

Can I use break-even analysis for a multi-product business?

Yes, but you need to use a weighted-average contribution margin rather than applying a single break-even formula to your entire product line. Calculate the contribution margin for each product, weight it by the percentage of expected sales that product represents, and use that blended number as your contribution margin in the break-even formula. Alternatively, run individual break-even analyses for each product line to understand which products are carrying the business and which are barely covering their own costs. This is especially important if your product mix shifts seasonally or over time.