Profitability ratios

Published Friday 15 May 2026

Table of contents

• What do profitability ratios measure?
• What can profitability ratios tell you?
• Types of profitability ratios
• How to improve your profitability ratios
• Using profitability ratios in your business
• Track your profitability ratios with Xero
• FAQs on profitability ratios

Key takeaways

• Profitability ratios measure how effectively your business turns revenue into profit, and they fall into two categories: margin ratios and return ratios.
• Tracking ratios like gross profit margin, operating profit margin, and net profit margin helps you spot cost issues and pricing problems before they affect your bottom line.
• Return ratios such as return on assets (ROA) and return on equity (ROE) show whether you're generating enough profit from the resources and capital invested in your business.
• Regularly calculating and comparing your profitability ratios against industry benchmarks gives you a clear picture of financial health and highlights where to focus improvements.

What do profitability ratios measure?

Profitability ratios are financial metrics that measure how well a business generates profit relative to its revenue, assets, or equity. They give you a clear view of your business's financial health by showing how much of your income you're actually keeping after costs.

For small businesses, profitability ratios are particularly useful because they cut through the noise of day-to-day transactions. Instead of looking at raw profit figures alone, these ratios express your performance as percentages, making it easier to compare results across different time periods or against other businesses in your industry.

Whether you're reviewing your pricing strategy, managing costs, or planning for growth, profitability ratios provide the data you need to make confident decisions.

What can profitability ratios tell you?

Profitability ratios help you understand the financial story behind your numbers. They reveal whether your business is operating efficiently and where there's room to improve.

According to the ACCA, ratio analysis is one of the most widely used methods for assessing financial performance. For small businesses, profitability ratios can help answer questions like:

• Is your pricing covering all your costs and delivering a healthy profit?
• Are your operating expenses too high relative to your revenue?
• How does your profitability compare to others in your industry?
• Are you generating a strong enough return from your assets and investments?
• Where should you focus to improve your bottom line?

By tracking these ratios over time, you can spot trends early and take action before small issues become bigger problems.

Types of profitability ratios

Profitability ratios fall into two main categories: margin ratios and return ratios. Margin ratios focus on how much profit you keep from each pound of revenue. Return ratios measure how effectively you use your assets, equity, or invested capital to generate profit.

Both types work together to give you a complete picture of your business's financial performance.

Margin ratios

Margin ratios show the percentage of revenue that turns into profit at different stages of your business operations. They help you understand where your costs are eating into your income.

The three key margin ratios are:

• Gross profit margin: the percentage of revenue left after deducting the direct cost of producing your goods or services
• Operating profit margin: the percentage of revenue remaining after both production costs and operating expenses
• Net profit margin: the percentage of revenue that remains as actual profit after all expenses, interest, and taxes

Return ratios

Return ratios measure how efficiently your business generates profit from the resources available to it. They're especially useful when you're assessing whether your investments and reinvested profits are paying off.

The three key return ratios are:

• Return on assets (ROA): how much profit you generate from your total assets
• Return on equity (ROE): how effectively you turn shareholders' equity into profit
• Return on invested capital (ROIC): how well you generate profit from all capital invested in the business

Gross profit margin

Gross profit margin is the percentage of revenue remaining after you subtract the direct costs of producing your goods or services. It's one of the most important profitability ratios for small businesses because it reveals whether your core business activity is profitable before accounting for overhead.

A strong gross profit margin means you have more money available to cover operating expenses, reinvest in the business, and build a financial cushion. If your gross profit margin is declining, it could signal rising supplier costs, pricing that's too low, or inefficiencies in your production process.

The formula for calculating gross profit margin is:

Gross profit margin = (Revenue - Cost of sales) / Revenue x 100

For example, imagine a bakery with £200,000 in annual revenue and £80,000 in cost of sales. The calculation would be:

(£200,000 - £80,000) / £200,000 x 100 = 60%

This means the bakery keeps 60p of every pound earned after covering the direct cost of ingredients and production.

Operating profit margin

Operating profit margin is the percentage of revenue left after deducting both the cost of sales and your day-to-day operating expenses, such as rent, utilities, and salaries. It shows how efficiently you run your business operations before accounting for interest and tax.

This ratio matters because a business can have a healthy gross profit margin but still struggle if operating costs are too high. Tracking your operating profit margin helps you identify whether overhead spending is under control.

The formula is:

Operating profit margin = Operating profit / Revenue x 100

Using the bakery example, if revenue is £200,000, cost of sales is £80,000, and operating expenses (rent, utilities, salaries, and other overheads) total £70,000, then operating profit is £50,000. The calculation would be:

£50,000 / £200,000 x 100 = 25%

A 25% operating profit margin means the bakery retains 25p of every pound of revenue after covering both production and operating costs.

Net profit margin

Net profit margin is the percentage of revenue that remains as profit after all expenses have been deducted, including cost of sales, operating expenses, interest, and taxes. It's the most complete measure of your business's profitability.

While gross and operating margins show profitability at different stages, net profit margin tells you what you actually take home. A low net profit margin compared to a healthy gross margin suggests that your overheads, financing costs, or tax obligations need attention.

The formula is:

Net profit margin = Net profit / Revenue x 100

Continuing with the bakery example, if revenue is £200,000 and net profit after all expenses and taxes is £30,000, the calculation would be:

£30,000 / £200,000 x 100 = 15%

This means the bakery keeps 15p of every pound of revenue as actual profit.

Return on assets (ROA)

Return on assets is a profitability ratio that measures how effectively your business uses its total assets to generate profit. It tells you how much profit each pound of assets produces.

ROA is particularly relevant if your business holds significant assets such as equipment, property, or vehicles. A low ROA might suggest you have underused assets that aren't contributing to profitability, while a rising ROA indicates you're getting more value from what you own.

The formula is:

ROA = Net profit / Total assets x 100

For example, if a business has £30,000 in net profit and £300,000 in total assets, the calculation would be:

£30,000 / £300,000 x 100 = 10%

A 10% ROA means the business generates 10p of profit for every pound of assets it holds.

Return on equity (ROE)

Return on equity is a profitability ratio that measures how effectively a business generates profit from shareholders' equity. It shows whether the money reinvested in the business is producing adequate returns.

ROE is useful for business owners who want to understand whether their retained profits and personal investment are working hard enough. A consistently low ROE might indicate that capital could be deployed more productively elsewhere.

The formula is:

ROE = Net profit / Shareholders' equity x 100

For example, if a business has £30,000 in net profit and £150,000 in shareholders' equity, the calculation would be:

£30,000 / £150,000 x 100 = 20%

A 20% ROE means the business generates 20p of profit for every pound of equity invested.

Return on invested capital (ROIC)

Return on invested capital measures how well a business generates profit from all the capital invested in it, including both equity and debt. It provides a broader view than ROE by accounting for all sources of funding.

ROIC is most relevant when you've taken on loans or outside investment to fund growth. It helps you assess whether those funds are being put to good use and delivering returns above their cost.

The formula is:

ROIC = Net operating profit after tax / Invested capital x 100

For example, if a business has £40,000 in net operating profit after tax and £250,000 in total invested capital (equity plus long-term debt), the calculation would be:

£40,000 / £250,000 x 100 = 16%

A 16% ROIC means the business generates 16p of profit for every pound of capital invested.

How to improve your profitability ratios

Improving your profitability ratios starts with understanding where your money is going and finding practical ways to keep more of it. Here are strategies that can make a real difference for small businesses:

• Reduce your cost of goods sold: negotiate better terms with suppliers, buy in bulk where it makes sense, or look for alternative materials that maintain quality at a lower price
• Control operating expenses: review your regular outgoings for subscriptions, services, or costs that no longer deliver value, and cut what you don't need
• Review your pricing strategy: make sure your prices reflect the true cost of delivering your product or service, plus a healthy margin, and don't be afraid to adjust them
• Improve asset utilisation: identify any equipment, stock, or resources that are sitting idle and find ways to put them to work or let them go
• Increase revenue per customer: look for opportunities to upsell, cross-sell, or offer complementary products and services to your existing customer base
• Reduce waste: streamline your processes to minimise wasted materials, time, and effort across your operations

You can find more practical advice on how to increase your profits by focusing on the areas that matter most to your business.

Using profitability ratios in your business

Profitability ratios are most valuable when you track them consistently and use them to guide your decisions. Calculating them once is useful, but the real benefit comes from monitoring trends over time.

Start by choosing the ratios most relevant to your business. If you sell physical products, gross profit margin and operating profit margin will give you the clearest insight. If you've invested heavily in assets or taken on funding, ROA and ROIC become more important.

Compare your ratios against industry benchmarks to understand where you stand. Your accountant or industry body can often provide typical figures for businesses like yours. Setting specific targets for each ratio gives you something concrete to work towards.

You can learn more about measuring profitability effectively. It's also worth looking at your profitability ratios alongside other financial ratios to get the full picture of your business's financial performance.

Track your profitability ratios with Xero

Keeping on top of your profitability ratios is much easier when your financial data is accurate and up to date. Xero's accounting software gives you real-time visibility into your revenue, costs, and profit, so you can calculate and monitor your ratios without waiting for month-end reports.

With automatic bank feeds, invoicing, and expense tracking, Xero helps you stay on top of the numbers that matter. You can pull the figures you need to assess your margins and returns at any time, making it simpler to spot trends and take action quickly.

Ready to take control of your profitability? Get one month free.

FAQs on profitability ratios

Here are answers to frequently asked questions about profitability ratios.

What is a good profitability ratio?

A good profitability ratio depends on your industry, business model, and stage of growth. What counts as strong for a retail business may differ significantly from a service-based business. The best approach is to compare your ratios against industry benchmarks and your own historical performance to track whether you're improving over time.

How often should I calculate profitability ratios?

For margin ratios like gross, operating, and net profit margin, monthly or quarterly calculations give you timely insight into how your business is performing. Return ratios such as ROA and ROE are typically calculated annually, as the underlying figures (total assets, equity) change more slowly. The key is consistency so you can identify trends.

Can I have a high gross profit margin but a low net profit margin?

Yes, this is a common situation that signals your operating costs, financing charges, or tax obligations are consuming too much of your gross profit. If you see a large gap between the two ratios, review your overhead expenses, loan repayments, and overall cost structure to find where profits are being eroded.

What's the difference between profitability and liquidity ratios?

Profitability ratios measure how effectively your business generates profit from its revenue, assets, or equity. Liquidity ratios measure your ability to pay short-term debts as they fall due. A business can be profitable but still face cash flow problems if its money is tied up in slow-paying invoices or stock.

What is a good profitability ratio by industry?

Profitability benchmarks vary widely across industries. For example, software businesses often have higher net profit margins than restaurants or retail shops because their cost structures are different. The most useful comparison is against businesses of a similar size and type in your sector, and your own results from previous periods.

How do I improve my profitability ratios?

Start by reviewing your pricing to confirm it covers all costs and delivers a healthy margin. Look at your cost of goods sold and operating expenses for savings opportunities. Track your ratios regularly so you can measure the impact of any changes you make. The improvement strategies section earlier in this guide covers specific actions you can take.