How to calculate your break-even point

Published Monday 11 May 2026

Table of contents

• What is a break-even point?
• Why break-even analysis matters for small businesses
• How to calculate your break-even point in units
• How to calculate your break-even point in sales revenue
• How to calculate a break-even point with multiple products
• How to interpret your break-even results
• Factors that affect your break-even point
• Pros and cons of break-even analysis
• How to calculate your break-even point in Excel
• Simplify your financial planning with Xero
• FAQs on calculating your break-even point

Key takeaways

• Your break-even point is the number of units you need to sell, or the revenue you need to earn, before your business covers all its costs. Knowing this number helps you set realistic sales targets and price your products with confidence.
• The break-even formula relies on three inputs: fixed costs, variable costs per unit, and selling price per unit. Getting accurate figures for each one is the foundation of a reliable calculation.
• Break-even analysis isn't a one-off exercise. Revisiting it regularly, especially when costs or prices change, helps you stay on top of profitability and make better financial decisions.
• Tools like Xero can help you track your costs and revenue in real time, making it simpler to run break-even calculations whenever you need them.

What is a break-even point?

Your break-even point is the moment your business stops making a loss and starts covering all of its costs. At this point, your total revenue equals your total expenses, meaning you're not making a profit yet, but you're not losing money either.

To calculate your break-even point, you need three pieces of information:

• Fixed costs: expenses that stay the same regardless of how much you sell, such as rent, insurance, and salaries
• Variable costs per unit: expenses that change depending on how many units you produce, such as raw materials, packaging, and shipping
• Selling price per unit: the amount you charge your customers for each product or service

The difference between your selling price and your variable cost per unit is called the contribution margin. This is the amount each sale contributes towards covering your fixed costs, and it's the core of every break-even calculation.

Why break-even analysis matters for small businesses

Break-even analysis gives you a clear financial target. Instead of guessing how many sales you need to turn a profit, you can work with a specific number. That clarity is valuable whether you're launching a new product, reviewing your pricing, or preparing a business plan.

Here are five ways break-even analysis can help your business:

• Pricing decisions: understanding your break-even point helps you set prices that cover costs and leave room for profit
• Cost control: seeing how fixed and variable costs affect your break-even point encourages you to look for savings
• Profit planning: once you know your break-even point, you can set revenue targets that go beyond just covering costs
• Funding applications: lenders and investors want to see that you understand when your business will become profitable
• Sales targets: you can give your team a concrete number to aim for, grounded in real financial data

How to calculate your break-even point in units

The most common way to calculate your break-even point is in units. This tells you exactly how many products you need to sell before you cover all your costs.

Break-even point (units) = Fixed Costs ÷ (Selling Price Per Unit – Variable Cost Per Unit)

Follow these steps to work it out:

1. Add up all your fixed costs for the period, for example, one month or one year.
2. Determine your variable cost per unit by totalling the costs that change with each product you make or sell.
3. Subtract your variable cost per unit from your selling price per unit. This gives you your contribution margin per unit.
4. Divide your total fixed costs by the contribution margin per unit.

Here's a worked example. Imagine you run a candle business with the following figures:

• Annual fixed costs: £12,000 (rent, insurance, website hosting, and so on)
• Selling price per candle: £15
• Variable cost per candle: £6 (wax, fragrance, packaging, and labels)

Your contribution margin per candle is £15 – £6 = £9. Dividing £12,000 by £9 gives you 1,333.33. Since you can't sell a fraction of a candle, you'd round up to 1,334 units. That means you need to sell 1,334 candles before your business breaks even.

For more practical scenarios, take a look at these break-even point examples.

How to calculate your break-even point in sales revenue

Sometimes it's more useful to know your break-even point in pounds rather than units. This is especially true if you sell services or a range of products at different prices. The formula uses your contribution margin ratio instead of the per-unit figure.

Break-even point (revenue) = Fixed Costs ÷ Contribution Margin Ratio

Your contribution margin ratio is the contribution margin per unit divided by the selling price per unit. It shows the percentage of each pound of revenue that goes towards covering fixed costs.

Using the candle business example again:

1. Calculate the contribution margin per unit: £15 – £6 = £9.
2. Divide the contribution margin by the selling price: £9 ÷ £15 = 0.6 (or 60%).
3. Divide your fixed costs by the contribution margin ratio: £12,000 ÷ 0.6 = £20,000.

This means you need to generate £20,000 in sales revenue to break even. Every pound earned above that figure contributes directly to profit. Accounting software like Xero makes it straightforward to track your revenue against targets like this, so you can see how close you are to breaking even at any point during the year.

How to calculate a break-even point with multiple products

Most businesses sell more than one product. When that's the case, you'll need to calculate a break-even point with multiple products using a weighted average contribution margin.

The idea is to combine the contribution margins of each product based on how much of your total sales each one represents. Follow these steps:

1. Work out the contribution margin for each product.
2. Determine the sales mix, which is the proportion of total sales each product makes up.
3. Multiply each product's contribution margin by its sales mix percentage.
4. Add these figures together to get the weighted average contribution margin.
5. Divide your total fixed costs by the weighted average contribution margin.

Here's a brief example. Suppose the candle business also sells wax melts:

• Candles: £15 selling price, £6 variable cost, £9 contribution margin, 70% of sales
• Wax melts: £8 selling price, £3 variable cost, £5 contribution margin, 30% of sales

The weighted average contribution margin is (£9 × 0.7) + (£5 × 0.3) = £6.30 + £1.50 = £7.80. With £12,000 in fixed costs, the break-even point is £12,000 ÷ £7.80 = 1,539 total units (rounded up). You'd then split that across the product mix: roughly 1,077 candles and 462 wax melts.

How to interpret your break-even results

Once you've calculated your break-even point, the next step is understanding what that number means for your day-to-day operations. A lower break-even point means you need fewer sales to cover costs, which generally signals a healthier financial position.

One useful concept is the margin of safety. This is the gap between your actual or expected sales and your break-even point. If your candle business expects to sell 2,000 units but only needs 1,334 to break even, the margin of safety is 666 units. A larger margin gives you more room to absorb unexpected costs or dips in demand.

It's also worth running scenario analysis. Ask yourself what happens if your rent increases by 10%, or if you need to lower your prices to stay competitive. Adjusting the inputs in your break-even formula helps you prepare for different outcomes and make decisions before problems arise.

Factors that affect your break-even point

Several factors can push your break-even point higher or lower. Keeping an eye on these helps you spot opportunities to improve profitability.

Changes that raise your break-even point include:

• Rising fixed costs, such as higher rent or new staff salaries
• Increasing variable costs, for example, more expensive raw materials
• Lowering your selling price without reducing costs

Changes that lower your break-even point include:

• Reducing fixed costs by renegotiating contracts or cutting non-essential expenses
• Finding cheaper suppliers to bring down variable costs
• Increasing your selling price, provided customers still see enough value
• Shifting your product mix towards higher-margin items

For a deeper look at strategies, read this guide on how to reduce your break-even point.

Pros and cons of break-even analysis

Break-even analysis is a valuable tool, but it has its limits. Here's a balanced view of what it can and can't do.

Strengths of break-even analysis:

• Gives you a clear, specific target to aim for
• Helps you understand the relationship between costs, prices, and profit
• Supports better pricing and budgeting decisions
• Simple to calculate and easy to explain to stakeholders or lenders
• Useful for testing "what if" scenarios before committing to a decision

Limitations of break-even analysis:

• Assumes all units produced are sold, which isn't always realistic
• Treats fixed costs as truly fixed, even though they can change over time
• Doesn't account for changes in demand or market conditions
• Works best for single products; multi-product calculations require more assumptions
• Ignores the time value of money and cash flow timing

How to calculate your break-even point in Excel

If you'd prefer to build your own break-even calculator, a spreadsheet is a quick way to do it. For a more detailed walkthrough, see this guide on calculating your break-even point in Excel.

Start by setting up a simple layout:

1. In cell A1, type "Fixed costs" and enter your total in B1 (for example, 12000).
2. In cell A2, type "Selling price per unit" and enter the value in B2 (for example, 15).
3. In cell A3, type "Variable cost per unit" and enter the value in B3 (for example, 6).
4. In cell A5, type "Break-even point (units)" and in B5, enter the formula: =B1/(B2-B3).
5. In cell A6, type "Break-even point (revenue)" and in B6, enter: =B1/((B2-B3)/B2).

You can also use Excel's Goal Seek feature. This is handy when you want to work backwards, for example, finding out what price you'd need to charge to break even at a specific number of units. Go to Data > What-If Analysis > Goal Seek, set your target cell to the break-even result, and let Excel calculate the answer.

Simplify your financial planning with Xero

Knowing your break-even point is a practical first step towards stronger financial management. With accurate, up-to-date numbers, you can set realistic targets, price your products confidently, and plan for growth.

Xero's cloud accounting software helps you track your costs and revenue in one place. With real-time financial data, customisable reports, and smart automation, you can spend less time on the books and more time running your business.

Get one month free and see how Xero can support your financial planning.

FAQs on calculating your break-even point

Here are some frequently asked questions about calculating your break-even point.

What is the break-even point formula?

The formula is: Fixed Costs ÷ (Selling Price Per Unit – Variable Cost Per Unit). This gives you the number of units you need to sell to cover all your costs. To find the break-even point in revenue, divide your fixed costs by the contribution margin ratio instead.

How do you calculate the break-even point for multiple products?

Use the weighted average contribution margin method. Multiply each product's contribution margin by its share of total sales, add the results together, then divide your fixed costs by that weighted average. This gives you a combined break-even target across your full product range.

What is a good break-even point?

There's no single "good" number, as it depends on your industry, business model, and growth stage. Generally, a lower break-even point is better because it means you need fewer sales to start generating profit. A healthy margin of safety between your expected sales and your break-even point is a positive sign.

How can you lower your break-even point?

You can lower it by reducing fixed costs, finding cheaper suppliers to cut variable costs, or raising your selling price. Shifting your product mix towards items with higher contribution margins also helps. Even small adjustments across these areas can make a meaningful difference.