See what percentage of your sales you need just to cover costs. No spreadsheets required.
Rent, salaries, insurance, etc.
Enter fixed costs (0 or more).
What you charge per unit
Enter a price greater than 0.
Materials, labor, shipping per unit
Enter a variable cost (0 or more).
Maximum sales capacity
Enter a capacity greater than 0.
Break-Even Sales %
0%
of your maximum capacity to cover all costs
Capacity Usage Required to Break Even
Break-Even: 0%Safety Margin: 100%
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Break-Even Units
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Break-Even Revenue
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Margin of Safety
How This Was Calculated
Try:
How It Works
Break-even percentage tells you what portion of your maximum sales capacity you need to reach just to cover all your costs. It converts the traditional break-even analysis (which gives you a number of units) into a percentage, which is far more useful for quick decision-making.
Contribution Margin = Selling Price – Variable Cost
Break-Even Units = Fixed Costs ÷ Contribution Margin
Break-Even % = (Break-Even Units ÷ Max Capacity) × 100
Margin of Safety = 100% – Break-Even %
If contribution margin is zero or negative, break-even is impossible regardless of volume.
The contribution margin is what each sale contributes toward covering your fixed costs after paying the variable costs of producing that unit. Once you sell enough units to cover all fixed costs, every additional sale is profit.
Why Percentage Beats Units for Quick Decisions
Knowing you need to sell “200 units” to break even is not very useful on its own. Is 200 units a lot? Is it realistic? You cannot answer without context. But knowing you need to sell “40% of your capacity” answers the question immediately. If 40% feels achievable, you are in good shape. If it is 90%, you have very little room for error. If it is over 100%, you have a real problem.
When People Use This Calculator
Before launching a new product
You have worked out your costs and pricing for a new product line. Before committing, you need to know if the numbers work. Enter your fixed costs (new equipment lease, additional rent), your selling price, your variable cost per unit, and your realistic maximum sales volume. If the break-even percentage is above 80%, the product may not be worth the risk unless you can increase prices or cut costs.
You are considering raising your price from $20 to $24. Run the calculator at both prices with the same costs. The break-even percentage will drop because each sale covers more of your fixed costs. This lets you see exactly how much breathing room a price increase creates, which helps you decide if the risk of losing some customers is worth it.
Deciding whether to add fixed costs
Your landlord raises rent by $500 per month, or you are considering hiring a new employee for $4,000 per month. Add that amount to your fixed costs and see how the break-even percentage changes. If it jumps from 55% to 75%, you can decide whether the increased cost is manageable or if you need to offset it with higher prices or more sales effort.
Comparing business models
A coffee shop with $3,000 in monthly fixed costs, $5 prices, and $1.50 variable costs has a very different risk profile than a workshop with $600 in fixed costs, $80 prices, and $75 variable costs. The coffee shop might need 43% of capacity to break even. The workshop might need 120%, meaning it cannot break even at all. This calculator makes those comparisons instant and obvious.
Preparing investor or loan applications
Bankers and investors want to see that you understand your numbers. A break-even percentage of 45% with a clear explanation of how you calculated it demonstrates financial awareness. It also answers their unspoken question: “How much can sales drop before this business fails?”
Business planning tip
Always calculate your break-even percentage using conservative estimates for max capacity. If you think you can sell 500 units, use 400. If the break-even percentage still looks manageable at the lower capacity, your business has a genuine safety cushion.
Common Mistakes People Make
Mistake 1: Misclassifying costs as fixed or variable
A cost is fixed only if it stays the same regardless of how much you sell. Rent is fixed. Raw materials are variable. But some costs are mixed. A phone bill might have a $50 fixed base plus $0.10 per transaction. For accuracy, split mixed costs into their fixed and variable components. Putting a variable cost into the fixed category inflates your break-even percentage unnecessarily.
Mistake 2: Using unrealistic max capacity
If you can produce 1,000 units but have never sold more than 300, using 1,000 as your max capacity gives a misleadingly low break-even percentage. Use a realistic estimate of what you can actually sell, not what you can theoretically produce. Sales capacity, not production capacity, is what matters here.
Mistake 3: Forgetting that break-even is not profit
Hitting break-even means you covered your costs. You made zero profit. Profit starts only after you sell beyond the break-even point. If your break-even is 60% of capacity and you sell exactly 60%, you survive but do not grow. Profit requires a margin of safety above break-even.
Mistake 4: Ignoring the time period alignment
All four inputs must cover the same time period. If your fixed costs are monthly ($3,000/month), your max capacity must also be monthly (500 units/month), not annual. Mixing monthly and annual numbers gives a result that looks plausible but is completely wrong.
Table of Truth: Common Break-Even Scenarios
Use these examples to sanity-check your own numbers. All use monthly periods.
Business
Fixed
Price
Var Cost
Capacity
BE %
Safety
Coffee shop
$3,000
$5
$1.50
1,000
42.9%
57.1%
SaaS product
$8,000
$49
$12
500
47.1%
52.9%
Food truck
$2,000
$12
$6
400
55.6%
44.4%
Online store
$1,500
$40
$18
200
27.3%
72.7%
Bakery
$4,500
$8
$3
1,500
51.4%
48.6%
Consulting
$2,000
$150
$0
20
66.7%
33.3%
Risky workshop
$600
$80
$75
20
120.0%
-20.0%
Tight margin
$5,000
$20
$18
3,000
166.7%
-66.7%
Frequently Asked Questions
What is break-even percentage?
Break-even percentage is the portion of your maximum sales capacity that you need to sell in order to cover all your costs. If your break-even percentage is 60%, you need to sell 60 out of every 100 units you are capable of selling just to cover expenses. Everything above that is profit.
How do I calculate break-even percentage?
First, find your contribution margin per unit: Selling Price minus Variable Cost. Then, divide Fixed Costs by Contribution Margin to get Break-Even Units. Finally, divide Break-Even Units by Maximum Capacity and multiply by 100 to get the percentage.
What if my break-even percentage is over 100%?
A break-even percentage over 100% means you cannot break even even if you sell at full capacity. Your costs are too high or your prices are too low. You need to either raise prices, reduce costs, or both. This is a serious warning sign for any business.
What is a good margin of safety?
Margin of safety is the gap between your full capacity and your break-even point. A 20-30% margin of safety is generally considered healthy. Below 10% means you are vulnerable to even small drops in sales. Above 50% means you have a very comfortable buffer.
What counts as a fixed cost?
Fixed costs are expenses that do not change based on how many units you sell. Common examples: rent, property taxes, insurance, salaries of permanent staff, loan payments, software subscriptions, equipment leases. If you would pay it even if you sold zero units, it is a fixed cost.
What counts as a variable cost?
Variable costs are expenses that increase with each unit you produce or sell. Common examples: raw materials, packaging, shipping per order, hourly labor directly tied to production, credit card processing fees per transaction, commissions per sale.
Does break-even change if I sell more than the capacity I entered?
The break-even percentage is based on the capacity number you enter. If you enter 500 units but actually sell 600, you would need to recalculate with 600 as your capacity. The break-even point in units and dollars stays the same regardless of capacity, but the percentage changes because the denominator changes.
Is this calculator free?
Yes. No signup, no login, no data stored. Enter your numbers and get your break-even percentage instantly.
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Crystal writes about money the way most people wish their teachers had plainly, practically, and without assuming you already know what compound interest means. With a background in financial literacy education, she covers percentage calculations, savings growth, loan interest, profit margins, and the everyday maths people avoid because it feels complicated. Her rule: if you need a calculator to explain the calculator, the calculator is broken.
