Break-Even Point: How to Calculate It for Your Business

The break-even point is one of the simplest and most useful numbers for managing a company's finances. It answers a single question: how much do you need to sell to stop losing money? That answer then drives decisions about pricing, advertising budgets, hiring and launching a new product line.

In this guide we cover:

• what the break-even point is and why it is worth calculating;
• which data you need and how to separate fixed costs from variable costs;
• the formulas for break-even in units and in revenue, with worked examples;
• how to build a break-even chart and what the margin of safety tells you;
• how to use break-even to set a maximum CPA and ROAS for paid advertising;
• the most common mistakes people make in the calculation.

What the break-even point is and why it matters

The break-even point (BEP) is the minimum level of sales at which a business's revenue covers all of its costs. At that point the business is running "at zero": no profit and no loss. Every euro of contribution earned beyond that point is profit.

You can express the break-even point in two ways: as a quantity, meaning how many units, deals or billable hours you need to sell, or in money, meaning the sales revenue you need to reach.

Businesses use this calculation to:

• set a minimum sales target for the month, quarter or year;
• check whether the current price allows any profit at all, and price a new product;
• estimate when a project or an investment will pay for itself;
• test scenarios before a decision: what happens if you raise prices, hire someone or double the ad budget;
• track the financial health of the business over time and react quickly, for example by cutting costs or updating prices.

Outsiders care about this number too. A bank reviewing a loan application or an investor looking at a startup will want to know how far the business sits from break-even. The further actual sales are above the break-even point, the more stable the business is and the better it can ride out a weak period.

What data you need to calculate break-even

To calculate a break-even point you need four inputs: revenue, fixed costs, variable costs and the price per unit. The hard part is not the formula. It is classifying your expenses correctly.

Revenue

Revenue (turnover) is all the money the business receives from selling products or services. It equals the price per unit multiplied by the number of units sold. For the calculation you can use actual revenue from a past period or a sales forecast for the next one.

Fixed costs

Fixed costs do not depend on how much you sell. You pay them even in a month when you sell nothing. Examples:

• rent for an office, studio or warehouse;
• fixed staff salaries and, in a small business, the salary the owner pays themselves;
• bookkeeping, insurance and licences;
• monthly subscriptions: website platform, hosting, CRM, software;
• phone, internet and electricity;
• loan repayments;
• a fixed monthly advertising budget.

Variable costs

Variable costs grow together with sales. The more you sell, the more you pay. Examples:

• raw materials and the purchase cost of goods;
• packaging and shipping to the customer;
• payment processing fees for cards and digital wallets;
• marketplace or affiliate commissions;
• sales commissions for your sales team;
• payments to freelancers or subcontractors per project.

Mixed costs

Some expenses have both a fixed and a variable part. One example is an e-commerce platform that charges a monthly subscription plus a percentage of every sale. Paid advertising is another. If you set a fixed monthly budget in Meta or Google Ads, it behaves like a fixed cost. If you pay a partner per sale, it is a variable cost. With costs like these, split the expense into its two parts and put each part in the right group.

VAT and taxes

If your business is VAT-registered, run the calculation on prices and costs excluding VAT. The VAT you charge customers is not your revenue: you pass it on to the tax authority. If you plug VAT-inclusive prices into the formula, your break-even point will come out lower than reality. If your business is not VAT-registered (many countries have a small-business threshold or exemption), the price the customer pays is your revenue, and the VAT you pay to suppliers is part of your cost. Income or corporate tax is charged on profit, so the basic break-even point is calculated before it. Rules differ by country, so if you are unsure how to classify something, check with your accountant. This is not tax or legal advice.

Break-even formulas

There are two ways to calculate the break-even point: in units or in revenue. Both rely on one key concept, the contribution margin.

Contribution margin

The contribution margin is what is left from each sale after you cover its variable costs:

Contribution margin per unit = Price per unit − Variable cost per unit

This is the amount each sale "contributes" towards covering fixed costs. Once fixed costs are covered, the contribution margin from every additional sale becomes profit.

Break-even point in units

The unit calculation suits a business that sells one product or service, or several products with similar prices and costs. It tells you how many units you need to sell:

Break-even point (units) = Fixed costs / (Price per unit − Variable cost per unit)

Break-even point in revenue

The revenue calculation suits a business that sells several products or services at different prices. It tells you how much revenue you need:

Break-even point (revenue) = Fixed costs / (Revenue − Variable costs) × Revenue

The ratio (Revenue − Variable costs) / Revenue is called the contribution margin ratio. It shows what share of every euro of sales is left to cover fixed costs. So you can also write the same formula as: Fixed costs / Contribution margin ratio.

Example: calculating break-even in units

Say you run an online shop selling handmade leather bags. The figures below are purely illustrative and exclude VAT:

• price per bag: €90;
• materials for one bag: €32;
• packaging and shipping per bag: €5;
• payment processing fee per bag: €3;
• studio rent: €500 per month;
• website platform and hosting: €60 per month;
• bookkeeping: €120 per month;
• phone and internet: €40 per month;
• fixed social media advertising budget: €480 per month.

Step 1. Fixed costs. Rent, website, bookkeeping, phone and internet, and advertising: 500 + 60 + 120 + 40 + 480 = €1,200 per month.

Step 2. Variable cost per unit. Materials, shipping and processing fee: 32 + 5 + 3 = €40 per bag.

Step 3. Contribution margin. 90 − 40 = €50 per bag.

Step 4. Break-even point. 1,200 / 50 = 24 bags per month.

In other words, the shop needs to sell 24 bags a month to cover all its costs. Profit starts with the 25th bag. If the result is not a whole number, say 23.4, always round up: at 23 bags you are still making a small loss.

What happens when you change one input

The big advantage of the break-even point is that you can test scenarios in a minute:

• Raise the price to €98. The contribution margin rises to €58, and break-even drops to 1,200 / 58 ≈ 20.7, so 21 bags.
• Add €300 to the ad budget. Fixed costs rise to €1,500, and break-even rises to 30 bags. The campaign has to bring in at least 6 extra sales a month just to pay for itself.
• Target a profit of €1,800 a month. Add the desired profit to fixed costs: (1,200 + 1,800) / 50 = 60 bags.

Example for a service business

The break-even point is not only for businesses that sell physical products. It works for service businesses too: the unit is simply a session, a billable hour or a project.

Say you are an independent consultant. Each session costs the client €70 excluding VAT, and for each session you pay about €6 for hourly room hire and the payment processing fee. Your fixed costs, including the salary you want to pay yourself, come to €1,600 a month. Your contribution margin is €64, so your break-even point is 1,600 / 64 = 25 sessions a month.

This calculation quickly shows whether the model is viable at all. If your calendar only has room for 20 sessions a month, you need to raise your price, cut costs or add a product that does not depend on your hours, such as a workshop or an online course. It is worth running this check before you invest in a website and advertising. We cover testing demand before launch in our guide on how to validate product demand.

Example: calculating break-even in revenue for several products

Now say the shop also sells wallets. Calculating a separate break-even point for each product no longer makes sense, because the fixed costs are shared. So you calculate break-even in revenue, based on a monthly sales forecast:

• bags: 30 units at €90, variable cost €40 per unit;
• wallets: 50 units at €36, variable cost €14 per unit;
• fixed costs are unchanged: €1,200 per month.

Step 1. Expected revenue. (90 × 30) + (36 × 50) = 2,700 + 1,800 = €4,500.

Step 2. Variable costs for the whole sales volume. (40 × 30) + (14 × 50) = 1,200 + 700 = €1,900.

Step 3. Contribution margin ratio. (4,500 − 1,900) / 4,500 ≈ 0.578. In other words, about 58 cents of every euro of sales is left to cover fixed costs.

Step 4. Break-even point. 1,200 / (4,500 − 1,900) × 4,500 ≈ €2,077.

To cover all its costs, the shop needs to sell around €2,077 worth of bags and wallets a month. Everything sold above that amount is profit.

One important caveat: this calculation only holds if the sales mix stays close to the forecast. If the shop sells many more wallets this month, which have a lower contribution margin ratio than the bags, the revenue break-even point will go up.

The break-even chart and margin of safety

To visualise the break-even point, and to explain it to partners or a bank, it helps to build a chart:

• the horizontal axis shows sales volume in units or revenue;
• the vertical axis shows revenue and costs in euros;
• the fixed cost line is a flat horizontal line, because fixed costs do not depend on volume;
• the total cost line starts at the level of fixed costs and rises with every unit;
• the revenue line starts at zero and rises faster than the total cost line.

The break-even point is where the revenue line crosses the total cost line. The area before that point is the loss zone, and the area after it is the profit zone.

You can build this chart in a few minutes in Google Sheets or Excel. Put quantities in one column, for example from 0 to 60 bags, and in two more columns calculate revenue and total costs for each quantity. Then select the table and insert a line chart. In Excel you can also use the Goal Seek tool under What-If Analysis: set profit to zero, and the tool finds the matching quantity or price.

Margin of safety

The margin of safety shows how far sales can fall before the business starts making a loss:

Margin of safety = (Actual sales − Break-even sales) / Actual sales × 100%

In the bags and wallets example: (4,500 − 2,077) / 4,500 ≈ 54%. Sales could drop by roughly half before the shop starts losing money. The larger the margin, the better the business can withstand a slow season, supplier price increases or a campaign that did not work.

Break-even in digital marketing: maximum CPA and ROAS

The break-even point is not just a number for your accountant. It also helps you manage paid advertising. When you pay for ads based on results, every purchase "costs" a certain amount, which is effectively one more variable cost.

Maximum CPA

CPA (cost per acquisition) is the average cost of one purchase from a campaign. It cannot be higher than your contribution margin per unit, or every sale from advertising loses money. In our example, a contribution margin of €50 means €50 is the CPA at which the campaign breaks even. If you want profit left over as well, set a lower target CPA, for example €30 to €36. For a detailed explanation of these metrics, see our guide to CPC, CPM, CPA and CPL.

Break-even ROAS

ROAS (return on ad spend) is the ratio between revenue from advertising and what you spent on it. Break-even ROAS is calculated like this:

Break-even ROAS = 1 / Contribution margin ratio

For a bag priced at €90 with a €50 contribution margin, the contribution margin ratio is about 0.56, so break-even ROAS is 1.8. Every euro spent on advertising needs to bring back at least €1.80 in sales. A ROAS below that means the campaign is losing money, even if it looks "profitable" in the ads dashboard.

Customer lifetime value

If customers come back and buy again, you can base your maximum CPA not on a single purchase but on the contribution margin from all of an average customer's purchases. Here it is essential to use real repeat-purchase data, not an optimistic estimate. We explain which numbers an online shop should track in our guide to ecommerce metrics for online stores.

For these calculations to work, you need to know which sale came from which campaign: the Meta Pixel, Google Ads conversion tags and UTM parameters on your links. Without accurate tracking, even the best formula is built on guesswork.

Common break-even calculation mistakes

Forgetting the owner's salary

In a small business the owner often works "for free", and their salary never makes it into fixed costs. The break-even point then looks low, but in reality the business only covers its costs because someone is not being paid. Include the amount you actually need to live on.

Calculating with VAT-inclusive prices

For a VAT-registered business, prices that include VAT inflate revenue. Always work with net prices and costs.

Ignoring "small" costs

Payment processing fees, marketplace commissions, returns, discounts and coupons, free shipping: each one looks minor, but together they can cut your contribution margin by tens of percent.

Not separating fixed and variable costs

If a mixed cost goes entirely into one group, the calculation is distorted. Split every such expense into its fixed and variable parts.

Calculating once and forgetting about it

Supplier prices, rent and advertising costs change all the time. Update your calculation at least once a quarter, and always before a major decision.

Trusting the model too much

The break-even point is a simple model. It assumes that price and cost per unit stay constant, that everything you produce gets sold and that the product mix does not change. In reality there are volume discounts, seasonality and unsold stock. Use the calculation as a tool for decisions and scenario testing, not as an exact forecast. One more important point: a healthy break-even position does not guarantee healthy cash flow. If customers pay on 60-day terms while suppliers want payment upfront, you can be "in profit" and still run out of cash in the bank.

How RJL Studio helps businesses reach break-even faster

There are three ways to lower your break-even point: sell more, earn more from each sale, or spend less to win each customer. Your website and marketing can influence all three.

At RJL Studio we build websites and online shops that sell, and connect them to accurate tracking: pixels, conversion events, CRM and a dashboard that shows at any moment what a customer costs and what they bring in. We also run campaigns and social media marketing with CPA and ROAS targets based on your business's real numbers, not on generic averages. And with automation and integrations, we can connect your shop, payments and bookkeeping into a single sheet, so your break-even point updates itself.

Want to see how far your business is from break-even and how your website could bring you closer? Get in touch and we will come back to you for a short call.

Frequently asked questions

What is the difference between break-even and profit?

The break-even point is the level of sales at which profit equals zero. Profit is what remains from each sale beyond that point, once all fixed costs are already covered.

How often should you recalculate your break-even point?

At least once a quarter, and also whenever something significant changes: a price, a supplier, rent, a new hire or a new advertising budget.

Is an advertising budget a fixed or a variable cost?

It depends on the model. A fixed monthly budget set in Meta or Google Ads behaves like a fixed cost. Paying affiliates or influencers per sale is a variable cost. What matters is choosing one approach and applying it consistently.

What can you do if your break-even point is too high?

There are three levers: raise your price, lower the variable cost per unit (for example a cheaper supplier or simpler packaging), or cut fixed costs. Test each option in a spreadsheet and see which one lowers break-even the most.

Can you calculate break-even for a business that has not launched yet?

Yes, and it is one of the most important uses of the calculation. Work from estimated costs and competitors' prices, and check whether the required sales volume is realistic. If you would need to sell more than the market or your time allows, it is far better to find out before launch.