What is net profit margin?

Published Thursday 23 July 2026

Table of contents

• What is net profit margin?
• How to calculate net profit margin
• What is a good net profit margin?
• Net profit margin vs gross profit margin
• How to improve your net profit margin
• Common mistakes when calculating net profit margin
• Track your net profit margin with Xero
• FAQs on net profit margin

Key takeaways

• Net profit margin shows what percentage of your revenue remains as profit after all expenses, taxes, and costs are deducted.
• You can calculate it by dividing your net profit by your total revenue, then multiplying by 100 to get a percentage.
• A net profit margin of around 10% is generally considered healthy for most small businesses, though this varies by industry.
• Tracking your net profit margin regularly helps you spot trends, control costs, and make more confident financial decisions.

What is net profit margin?

Net profit margin is one of the most important measures of your business's financial health. It tells you what percentage of your total revenue you actually keep as profit after paying every expense.

To put it simply, net profit margin measures how much of each pound you earn translates into real profit. It takes into account all your costs: operating expenses, wages, rent, interest, taxes, and any other outgoings.

It's different from net profit itself. Net profit is a pound amount, for example, £20,000. Net profit margin is that amount expressed as a percentage of your revenue. A small business turning over £200,000 with £20,000 net profit has a net profit margin of 10%.

This percentage makes it easy to compare your performance over time or against other businesses, regardless of size. A business earning £1 million in revenue isn't necessarily more profitable than one earning £100,000 if its margin is lower. For a broader look at all types of margins, see the guide on how to calculate profit margin.

How to calculate net profit margin

The formula for net profit margin is straightforward. Once you know your net profit and total revenue, you can work it out in seconds.

Net profit margin = (net profit / total revenue) x 100

Here's what each part means:

• Total revenue: the full amount your business earns before any deductions
• Net profit: your total revenue minus all expenses, including operating costs, wages, interest, and taxes
• The result: a percentage showing how much of each pound of revenue you keep as profit

Worked example

Imagine your business has the following figures for the year:

• Total revenue: £250,000
• Cost of goods sold: £100,000
• Operating expenses (rent, wages, utilities): £80,000
• Interest payments: £5,000
• Tax: £13,000

First, calculate your net profit: £250,000 - £100,000 - £80,000 - £5,000 - £13,000 = £52,000.

Then apply the formula: (£52,000 / £250,000) x 100 = 20.8%. You can also see the step-by-step walkthrough in the net profit margin calculation guide.

This means you keep 20.8p of every pound earned as profit. You can use a net profit margin calculator to run these numbers quickly for your own business.

What is a good net profit margin?

There's no single number that counts as a "good" net profit margin for every business. It depends on your industry, your business model, and how established you are.

As a general guide:

• 5% or below is considered low, though it may be normal for high-volume industries like retail
• 10% is widely seen as a healthy margin for most small businesses
• 20% or above is considered strong and suggests your business manages costs well

Some industries naturally have higher margins than others. Professional services firms and software businesses often see margins of 15% to 25%. Retail, hospitality, and food businesses often operate on tighter margins of 3% to 9%.

What matters most is how your margin trends over time. A consistent or improving margin signals that your business is on a solid footing. A declining margin is a prompt to investigate your costs and pricing. Learn more about how to measure profitability with different margin types.

Net profit margin vs gross profit margin

Net profit margin and gross profit margin are both useful measures of profitability, but they tell you different things about your business.

Gross profit margin only deducts the direct costs of producing your goods or services (known as cost of goods sold). It shows how efficiently you turn revenue into profit before overheads come into play.

Net profit margin goes further. It deducts all your costs: operating expenses, interest, taxes, and everything else. It shows the profit you actually take home.

For example, if your business has a gross profit margin of 60% but a net profit margin of 10%, it means your overheads and other costs are eating into a large share of your gross profit. Both metrics are valuable. Gross profit margin helps you assess pricing and production efficiency. Net profit margin gives you the full picture of your bottom line.

How to improve your net profit margin

Improving your net profit margin comes down to 2 things: increasing your revenue or reducing your costs. Here are practical strategies you can start with.

Review your pricing

If your costs have risen but your prices haven't, your margin will shrink. Review your pricing regularly to make sure it reflects the true cost of delivering your product or service. Even small increases can make a meaningful difference to your bottom line.

Cut unnecessary expenses

Go through your expenses line by line. Look for subscriptions you no longer use, suppliers who could offer better rates, or overheads you could reduce. Regular expense reviews help you catch spending that's crept up over time.

Improve operational efficiency

Streamlining your processes saves time and money. Automating repetitive tasks, for example, bank reconciliation and invoice reminders, frees you up to focus on growing your business instead of chasing admin.

Focus on high-margin products or services

Not everything you sell delivers the same margin. Identify which products or services are most profitable and consider focusing your efforts there. Reducing time spent on low-margin work can have a big impact.

Keep your financial data up to date

You can't improve what you can't measure. Keeping your books accurate and up to date with real-time financial data helps you spot margin changes early and act before small problems become big ones.

Common mistakes when calculating net profit margin

Calculating net profit margin is simple in theory, but there are a few common pitfalls that can lead to inaccurate results.

Confusing gross profit with net profit

Gross profit only accounts for direct costs of production. If you use gross profit instead of net profit in the formula, your margin will look much higher than it really is. Make sure you include all expenses, not just cost of goods sold.

Missing out on expenses

It's easy to overlook smaller costs like bank charges, software subscriptions, or depreciation. Every expense that isn't captured means your net profit figure is overstated. A thorough review of your accounts helps ensure nothing slips through.

Ignoring seasonal variations

Many businesses have seasonal peaks and troughs. Calculating your margin based on a single month can give a misleading picture. Look at margins over a full quarter or year to get a more accurate view of your profitability.

Not benchmarking against your industry

A 5% margin might be poor in one industry and excellent in another. Without comparing your margin to industry averages, it's hard to know where you stand. Use benchmark data to put your numbers in context.

Track your net profit margin with Xero

Keeping on top of your net profit margin doesn't have to be complicated. With Xero's accounting software, your financial data stays accurate and up to date, so you can see your profitability in real time.

Automated bank feeds, expense tracking, and customisable reports make it easy to monitor your margins without spending hours on manual bookkeeping. You'll have the numbers you need to make confident decisions and keep your business on track. Get one month free.

FAQs on net profit margin

Here are answers to some of the most common questions about net profit margin.

What is a good net profit margin for a small business?

A net profit margin of around 10% is generally considered healthy for most small businesses. However, this varies significantly by industry, so it's best to compare your margin against benchmarks in your specific sector.

What is the difference between net profit and net profit margin?

Net profit is the pound amount left after all expenses are deducted from your revenue. Net profit margin expresses that figure as a percentage of total revenue, making it easier to compare performance across different periods or businesses.

How often should you check your net profit margin?

It's a good idea to review your net profit margin at least once a month. Regular tracking helps you catch trends early and respond quickly if your costs are rising or your revenue is dipping.

Can net profit margin be negative?

Yes, a negative net profit margin means your business is spending more than it earns. This can happen during startup phases or periods of heavy investment, but a persistently negative margin is a sign you need to review your costs and pricing.

Does a business pay tax on gross or net profit?

In the UK, businesses typically pay tax on their taxable profit, which is closer to net profit. HMRC allows you to deduct allowable business expenses from your revenue before calculating your tax liability.