What's the difference between fixed and variable costs?

Fixed costs keep happening regardless of how much you sell — rent, salaried payroll, your software subscriptions, insurance premiums. Variable costs scale with each unit you produce or sell, so think materials, hourly labor, payment processing fees, packaging. A few costs are genuinely mixed (utilities go up a bit when you're busier), and how you classify those can shift your break-even number meaningfully.

What is contribution margin?

It's the chunk of each sale that goes toward covering your fixed costs after the variable costs are paid. If you sell something for $50 and the variable cost is $20, every sale contributes $30 toward fixed expenses. The bigger that margin, the fewer units you need to sell to cover your overhead — which is why even small price increases or cost reductions move the break-even point so dramatically.

How do I include profit in the calculation?

Treat your target profit like another fixed cost. Add it to your real fixed costs, then run the same formula. So if your fixed costs are $50,000 and you want $30,000 of profit, divide $80,000 by your contribution margin. That gives you the sales volume you need to actually take home what you're aiming for, not just stay solvent.

What if my product has variable pricing?

When you have multiple price points (B2B contracts, retail with discounts, service tiers), compute a weighted average price based on your typical sales mix and use that. Or calculate break-even separately for each segment. The sensitivity analysis matters more here than in single-price models — if your mix shifts toward the lower-priced offerings, your break-even point moves meaningfully, and you want to know that ahead of time.

How does break-even work for service businesses?

Same math, just swap 'units sold' for 'billable hours' or 'engagements delivered.' Your variable costs might be contractor hours or per-project materials, and fixed costs are your office, salaries, and software. Consultants and agencies tend to underestimate fixed costs because so much of running the business feels variable, which inflates the contribution margin and makes the math too optimistic.

Should I include taxes?

Taxes hit profit, not revenue, so basic break-even (revenue covering costs) is naturally pre-tax. If you want to know how many sales it takes to clear a specific take-home amount, you have to gross up for taxes — divide your post-tax target by (1 minus your tax rate) to find the pre-tax profit you're really aiming for, then plug that into the break-even formula.

Is the data sent anywhere?

Nope. The whole calculation is JavaScript arithmetic running in your browser. Your fixed costs, pricing, and projections never leave your device, which matters when you're running numbers on confidential business plans, investor projections, or competitive pricing analysis.

Break-Even Calculator

Calculate your break-even point in units and revenue from fixed costs, variable costs, and price. Free break-even analysis tool for business planning.

Calculators

Instant results

Fixed Costs ($)

Rent, salaries, insurance, and other costs that stay the same regardless of output

Variable Cost per Unit ($)

Materials, labor, shipping per unit

Price per Unit ($)

Selling price per unit

Break-Even Point

400 units

Break-Even Revenue

$16,000.00

Contribution Margin

$25.00

per unit

Margin %

62.5%

How it works

Selling Price$40.00

- Variable Cost-$15.00

= Contribution Margin$25.00

Fixed Costs / Contribution Margin$10,000.00 / $25.00

= Break-Even Units400

How to Use Break-Even Calculator

Enter fixed costs

Add up everything that hits your books regardless of sales — rent, salaried payroll, software subscriptions, insurance, fixed overhead — and enter that as a monthly or annual figure. Pick the period that matches how you'll use the result, since mixing monthly and annual numbers in the same calculation is a common source of errors.

Enter variable cost per unit

This is what each individual sale costs you to fulfill, separate from your fixed overhead. Materials, hourly labor on the unit, payment processing fees, shipping, packaging — they all count. Many founders underestimate this number because the small fees feel ignorable until they're aggregated.

Set selling price

Punch in your price per unit (or per billable hour for service work). The calculator subtracts your variable cost from this and shows the contribution margin — the amount each sale actually puts toward covering fixed costs.

View break-even point

You'll see the number of units needed, the revenue that represents, and how long it takes at the sales rate you're projecting. From there it's worth running a sensitivity check — drop the price 10 percent or bump variable costs up and see how the break-even point shifts. That tells you how much room your model really has.

When to Use Break-Even Calculator

Startup planning

Founders trying to figure out how many units they need to sell each month before the lights stay on can use this to find the precise threshold. It feeds directly into pricing decisions, realistic sales quotas, and runway projections you'll show investors.

Product launch decisions

Before greenlighting a new product, run the numbers. If hitting break-even requires selling millions of units in a saturated market, you've answered the go/no-go question. The calculator turns gut feel into a concrete number you can defend or push back on.

Service business pricing

Freelancers and consultants chronically underprice themselves because they only think about the hourly rate, not the costs behind the rate. Punching in your real numbers shows what you actually need to charge to cover overhead and still make a living.

Restaurant and retail viability

Brick-and-mortar businesses live or die on volume. Knowing the daily sales you need to cover rent, payroll, and inventory tells you whether the location is viable before you sign a lease, and it gives you a benchmark to measure against once you're open.

Break-Even Calculator Examples

Standard product break-even

Input

Fixed costs: $50,000/year. Variable cost per unit: $20. Selling price: $50.

Output

Contribution margin: $30/unit. Break-even units: 1,667. At 100/month, break-even hits at month 17.

The math is straightforward — fixed costs divided by the gap between price and variable cost. Sell fewer than 1,667 units a year and you lose money; sell more and you start banking profit. The calculation also tells you something practical, namely that small price increases compound dramatically because they widen that contribution margin.

Freelancer rate setting

Input

Desired income: $80,000/year. Working hours: 1,500/year (30 hrs × 50 weeks). Other costs: 30%.

Output

Required hourly rate: $74. That's ($80K target + $24K overhead) divided by 1,500 billable hours.

Most freelancers price by glancing at what others charge and shaving a bit. The honest math usually shocks them. Once you account for unpaid time spent on admin, sales, and sick days, plus self-employment taxes and tooling, the rate you need is often 50-80% higher than the rate you instinctively quote.

Restaurant viability check

Input

Monthly fixed: $25,000 (rent, salaries, utilities). Variable per meal: $8 (ingredients, labor). Avg meal price: $30.

Output

Contribution per meal: $22. Break-even meals per month: 1,136. At 50 meals/day across 25 service days you'd hit 1,250 — viable, but the margin is thin.

This kind of analysis exposes how sensitive restaurants are to slow nights. Closing early on a Tuesday doesn't pause the rent or the salaried staff — those costs keep running, which is why average ticket size and consistent volume matter so much in food service.

Tips & Best Practices for Break-Even Calculator

1.Be brutally honest about variable costs. Materials, direct labor, payment processing fees, packaging, shipping — they all count. Underestimating any of these gives you a break-even number that looks achievable but isn't.
2.Don't blur the line between fixed and variable. Rent and salaried staff are fixed. Hourly contractors, raw materials, and commissions are variable. A few costs sit in between (utilities scale a little with volume), and treating them as either pure fixed or pure variable can shift the answer noticeably.
3.If you want actual profit rather than just zero loss, fold your target profit into the fixed-cost number before running the formula. That gives you the sales volume needed to hit your income goal, not just to keep the doors open.
4.Annual break-even hides cash flow trouble. A business that breaks even on the year can still run out of money in February. Look at monthly numbers and plan reserves for the slow months.
5.Run sensitivity analysis. What happens if your variable costs climb 10 percent or sales drop 20? Plugging in pessimistic scenarios reveals how robust the model really is and where the business is most fragile.
6.Recalculate every six months once you have real data. Projections are educated guesses; real numbers from your actual sales replace those guesses with facts and usually shift the picture in ways worth knowing.

Frequently Asked Questions

It's the sales volume where what you bring in finally equals what you spend, so you stop losing money but haven't yet started making any. Cross that line and every additional sale starts contributing to profit. The math is straightforward — divide fixed costs by your contribution margin (price minus variable cost per unit) and you have the number of units you need to move.

Break-Even Calculator

How it works

How to Use Break-Even Calculator

Enter fixed costs

Enter variable cost per unit

Set selling price

View break-even point

When to Use Break-Even Calculator

Startup planning

Product launch decisions

Service business pricing

Restaurant and retail viability

Break-Even Calculator Examples

Standard product break-even

Freelancer rate setting

Restaurant viability check

Tips & Best Practices for Break-Even Calculator

Frequently Asked Questions

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