Business Break-Even Analysis: How to Calculate Your Break-Even Point

What Is Break-Even Analysis?

Break-even analysis identifies the point at which your business revenue equals your total costs — you are neither making a profit nor a loss. Every unit sold beyond this point generates profit. Every unit below it means a loss.

It is one of the most fundamental tools in business planning and pricing strategy. Use our Break-Even Calculator to find your break-even point instantly.

The Key Components

Fixed Costs Costs that stay the same regardless of how much you sell or produce. Examples: rent, salaries, insurance, loan repayments, software subscriptions, equipment depreciation. Fixed costs exist whether you sell zero units or 10,000 units.

Variable Costs Costs that change directly with production or sales volume. Examples: raw materials, packaging, direct labour per unit, shipping per item, payment processing fees per transaction.

Selling Price per Unit The price at which you sell each unit of product or service.

Contribution Margin Selling Price − Variable Cost per Unit = Contribution Margin per Unit

The contribution margin is what each unit "contributes" toward covering fixed costs and eventually generating profit.

The Break-Even Formulas

Break-Even Units: Break-Even Units = Fixed Costs ÷ Contribution Margin per Unit

Break-Even Revenue: Break-Even Revenue = Fixed Costs ÷ Contribution Margin Ratio

Where: Contribution Margin Ratio = Contribution Margin per Unit ÷ Selling Price

Step-by-Step Example

You run a candle business with the following figures:

• Monthly fixed costs (rent, insurance, equipment): £2,400
• Selling price per candle: £18
• Variable cost per candle (wax, wick, jar, label): £6

Step 1: Calculate contribution margin £18 − £6 = £12 per candle

Step 2: Calculate break-even units £2,400 ÷ £12 = 200 candles per month

Step 3: Calculate break-even revenue 200 candles × £18 = £3,600 per month

Interpretation: You need to sell 200 candles generating £3,600 in revenue each month before you make any profit. Every candle sold beyond 200 generates £12 in profit.

Contribution Margin Ratio

The contribution margin ratio (CM ratio) expresses the contribution margin as a percentage of selling price.

CM Ratio = (Contribution Margin ÷ Selling Price) × 100 CM Ratio = (£12 ÷ £18) × 100 = 66.7%

This means 66.7% of every £1 in revenue contributes toward covering fixed costs and profit. Once fixed costs are covered, you make 66.7p profit for every £1 in revenue.

Break-Even Revenue = Fixed Costs ÷ CM Ratio = £2,400 ÷ 0.667 = £3,600

Margin of Safety

The margin of safety tells you how far sales can fall before you reach the break-even point and start losing money.

Margin of Safety = Actual (or Projected) Sales − Break-Even Sales

Example: Your candle business sells 320 candles per month (£5,760 revenue). Margin of Safety (units) = 320 − 200 = 120 candles Margin of Safety (revenue) = £5,760 − £3,600 = £2,160 Margin of Safety (%) = (£2,160 ÷ £5,760) × 100 = 37.5%

A 37.5% margin of safety means sales could fall by 37.5% before you start losing money. Higher is better — a margin of safety below 15–20% indicates a vulnerable business model.

Target Profit Analysis

Break-even analysis extends naturally to profit targeting — how many units do you need to sell to hit a specific profit target?

Units Required for Target Profit = (Fixed Costs + Target Profit) ÷ Contribution Margin

Example: You want £1,800 profit per month from your candle business. Units = (£2,400 + £1,800) ÷ £12 = £4,200 ÷ £12 = 350 candles

Revenue Required = 350 × £18 = £6,300

How Pricing Affects Break-Even

Pricing is the most powerful lever in break-even analysis. A small price increase dramatically improves your position.

Candle example — what happens if you raise the price from £18 to £20?

• New contribution margin: £20 − £6 = £14
• New break-even: £2,400 ÷ £14 = 171 candles (was 200)

A £2 price increase reduces your break-even by 29 units — without selling a single extra candle or cutting costs.

This is why pricing deserves more attention than most small business owners give it. Use our Markup Calculator to ensure your pricing gives you sufficient margin.

Limitations of Break-Even Analysis

Assumes constant selling price In reality you may sell at different prices to different customers or through different channels. Break-even analysis works best when you have a consistent price point.

Assumes costs are clearly fixed or variable Some costs are "semi-variable" — they are fixed up to a point and then increase in steps. For example, you might need an additional member of staff when production exceeds a certain volume. Simple break-even analysis does not capture these step changes.

Ignores cash flow timing You might be profitable on paper but have cash flow problems if customers pay 60 days after delivery while you pay suppliers immediately. Use our Cash Flow Calculator alongside break-even analysis.

Does not account for multiple products Multi-product businesses need a weighted average contribution margin. If you sell products with different margins, your overall break-even depends on the sales mix.

Break-Even in Service Businesses

Service businesses calculate break-even slightly differently because there may be no "units" to count. Instead use:

Break-Even Revenue = Total Fixed Costs ÷ Average Profit Margin %

Example: A freelance web designer with:

• Monthly fixed costs: £1,500
• Average profit margin after direct costs: 60%

Break-Even Revenue = £1,500 ÷ 0.60 = £2,500 per month

The designer needs £2,500 in monthly billings to cover costs and break even. Any revenue above this generates profit at a 60% margin.

Using Break-Even for Business Decisions

Should I take on this contract? Calculate whether the revenue covers the variable costs plus a contribution toward fixed costs. Any positive contribution margin improves your position.

Should I buy this piece of equipment? The equipment increases your fixed costs. How many additional units must you sell to cover it? Is that realistic?

Should I hire a new employee? An employee is a fixed cost. What revenue increase is needed to justify the salary? Is that achievable?

Which product line should I focus on? The product with the highest contribution margin per unit (or per unit of scarce resource, such as production time) should receive priority.

Frequently Asked Questions

• What is a good break-even point?

There is no universal "good" break-even point — it depends entirely on your industry, market size, and growth trajectory. What matters is that your break-even is achievable given your realistic sales capacity, and that your margin of safety is sufficient to absorb sales fluctuations.

• How do I reduce my break-even point?

Either reduce fixed costs, reduce variable costs, or increase selling price (which increases contribution margin). Reducing variable costs and increasing price are usually more impactful than cutting fixed costs, which are often difficult to reduce significantly in the short term.

• Can break-even analysis be used for an entire business?

Yes — aggregate all fixed costs and calculate a blended contribution margin across all products. This gives you the total revenue needed to break even as a business. Use our Break-Even Calculator to run this analysis.

• What happens if I cannot reach break-even?

If your realistic sales capacity falls below break-even, you have a fundamental problem with either pricing, costs, or market size. Options include: increasing prices, finding ways to reduce costs, pivoting to a different product or service, or reconsidering the business model entirely.

• How often should I update my break-even analysis?

Recalculate whenever there is a significant change — a cost increase, a price change, a new product line, or major changes in sales volume. For most small businesses, quarterly review is sufficient.