Profitability ratios: types, formulas and business uses

Published Monday 30 March 2026

Table of contents

• What do profitability ratios measure?
• Types of profitability ratios
• Gross profit margin
• Net profit margin
• Return on assets
• Return on invested capital
• How to interpret your profitability ratios
• How to improve your profitability ratios
• Using profitability ratios in your business
• Track your profitability with confidence
• FAQs on profitability ratios

Key takeaways

• Track gross profit margin and net profit margin regularly to monitor your business's day-to-day sustainability, aiming for gross margins of 25-50% and net margins of 5-20% depending on your industry.
• Compare your profitability ratios against your own historical performance rather than just industry benchmarks, as consistent improvement over time matters more than hitting specific numbers.
• Use return on assets (ROA) and return on invested capital (ROIC) to evaluate whether your investments in equipment, property, or capital are generating strong returns before making future spending decisions.
• Improve profitability ratios through targeted strategies like negotiating better supplier pricing for gross margins, cutting unnecessary operating expenses for net margins, or selling underperforming assets for return ratios.

What do profitability ratios measure?

Profitability ratios measure how efficiently your business converts revenue and investments into profit. Different ratios focus on different types of spending, so not all will be relevant to every small business.

Types of profitability ratios

Profitability ratios fall into two main categories, each measuring a different aspect of your business performance.

Margin ratios

Margin ratios measure what percentage of revenue remains after covering operating costs. For example, an operating margin of 15% means a company earns 15 cents of operating profit for every dollar of sales. They reveal how much of each sale your business keeps as profit.

The two main margin ratios are:

• Gross profit margin: Measures profit after deducting the cost of goods sold
• Net profit margin: Measures profit after deducting all expenses

Return ratios

Return ratios measure how effectively your business generates profit from assets and investments. They're most relevant if you're investing in growth through equipment, property, or other capital.

The two main return ratios are:

• Return on assets (ROA): Measures profit generated from total assets
• Return on invested capital (ROIC): Measures profit generated from invested capital

Gross profit margin

Gross profit margin shows what percentage of revenue remains after paying for the goods or services you sell. This margin needs to be large enough to cover your general expenses.

Those expenses include rent, utilities, marketing, insurance, and administration costs.

Why it matters

A higher gross margin gives you more financial flexibility. Here's why it matters:

• More cash to cover costs: You keep a larger portion of each sale to pay expenses
• Better net profit potential: Higher margins create more room for bottom-line profit
• Early warning system: Tracking margins helps you spot threats or opportunities before they affect your business

How to calculate gross profit margin

Net profit margin

Net profit margin shows what percentage of revenue remains after paying all expenses, including operating costs, interest, and taxes. This is the portion of sales you keep in the business to pay owners or reinvest in growth.

Why it matters

A higher net profit margin means you're efficient at turning sales into profits. Higher margins also make you less reliant on high sales volume, which helps small businesses that can't compete on scale.

Finding the right margin involves trade-offs:

• Lower prices: May increase sales volume and total profit
• Higher marketing spend: May bring in more customers
• More staff investment: May improve operations and customer experience

It's a delicate balance between margin and growth.

Net profit can be calculated before or after taxes. If using after-tax net profit, subtract taxes from your total expenses.

How to calculate net profit margin

* Net profit can be quoted before or after taxes. If quoting after-tax net profit then you need to also subtract taxes.

Return on assets

Return on assets (ROA) measures how effectively your business generates profit from its assets, such as property, equipment, and intellectual property. This ratio is most useful if you've invested significantly in physical assets or capital equipment.

Why it matters

ROA helps you evaluate whether your asset investments are paying off:

• High ROA: Indicates your assets are generating strong returns relative to their value
• Low ROA: May suggest you've overinvested in assets that aren't contributing enough profit

We use total asset value rather than average asset value because most small businesses don't frequently buy and sell assets.

How to calculate return on assets

* We use value of assets rather than 'average value of assets' because the latter is for businesses that are buying and selling assets all the time... which doesn't reflect a small business.

Return on invested capital

Return on invested capital (ROIC) measures how effectively your business generates profit from capital investments. This ratio is most relevant if you're spending on property, equipment, intellectual property, or research and development.

Why it matters

ROIC helps you assess whether your capital investments are generating strong returns, so you can make smarter decisions about future spending.

How to calculate return on invested capital

How to interpret your profitability ratios

Calculating your profitability ratios is only the first step. Understanding what the numbers mean helps you take action.

Profitability ratios vary significantly by industry, business size, and growth stage. For example, an analysis of return on assets (ROA) across 130 industries found a 14x performance gap between the highest-performing sector (Technology Consumer Electronics at 12.04%) and the lowest (Diversified Banking at 0.87%). Here's general guidance for small businesses:

• Gross profit margin: Healthy margins typically range from 25% to 50%, though this varies widely by industry
• Net profit margin: Most small businesses aim for 5% to 20%, with service businesses often achieving higher margins than retail
• ROA: A ratio above 5% generally indicates efficient use of assets, with one 2025 analysis classifying companies as strong performers between 5–8% ROA
• ROIC: A ratio above your cost of capital suggests your investments are creating value

Watch for these warning signs:

• Declining margins over time: May indicate rising costs or pricing pressure
• Margins below industry averages: Could signal inefficiency or competitive disadvantage
• Negative trends across multiple ratios: Suggests broader profitability challenges

Compare your ratios against your own historical performance, not just industry benchmarks. Consistent improvement matters more than hitting a specific number.

How to improve your profitability ratios

Once you understand your current ratios, you can take steps to improve them. Different ratios respond to different strategies.

To improve gross profit margin:

• negotiate better pricing with suppliers
• increase prices if the market supports it
• reduce waste and production inefficiencies
• focus on higher-margin products or services

To improve net profit margin:

• cut unnecessary operating expenses
• automate repetitive tasks to reduce labour costs
• review subscriptions and recurring costs
• improve operational efficiency

To improve ROA and ROIC:

• sell or repurpose underperforming assets
• delay major purchases until existing investments pay off
• focus capital spending on high-return opportunities
• lease equipment instead of buying when it makes sense

Balance short-term improvements with long-term growth. Cutting costs aggressively may boost margins temporarily but could limit your ability to scale.

Using profitability ratios in your business

Tracking these metrics gives you the visibility to make confident decisions about pricing, spending, and growth.

Here's how to put profitability ratios to work:

• Track gross and net profit margins regularly: These are essential for day-to-day sustainability
• Set benchmarks: Define the ratios you want to maintain
• Set goals: Identify the ratios you want to achieve
• Review ROA and ROIC when scaling: These become relevant as you invest in growth

Work with your accountant or bookkeeper to determine which ratios matter most for your business. They can run the calculations and share reports through Xero accounting software.

For more detail, see our guides on how to measure profitability and how to increase profit.

Track your profitability with confidence

Profitability ratios give you the visibility to make smarter decisions about pricing, spending, and growth. With the right tools, tracking these metrics becomes part of your regular routine rather than a manual chore.

Xero's reporting features make it easy to monitor your margins and share insights with your accountant. Get one month free and see how simple profitability tracking can be.

FAQs on profitability ratios

Here are answers to common questions about profitability ratios.

What's a good profitability ratio for a small business?

It depends on your industry and business model. Generally, aim for a net profit margin of 5% to 20% and a gross profit margin of 25% to 50%, but compare against businesses similar to yours for the most relevant benchmark.

How often should I calculate my profitability ratios?

Review your ratios monthly or quarterly to spot trends early. More frequent tracking helps you respond quickly to changes in costs, pricing, or sales performance.

Which profitability ratio matters most for small businesses?

Net profit margin is often the most important because it shows what you actually keep after all expenses. However, gross profit margin is essential for understanding whether your core business model is sustainable.

Can I improve profitability without cutting costs?

Yes. You can improve profitability by increasing prices, focusing on higher-margin products, improving operational efficiency, or growing sales volume to spread fixed costs across more revenue.

How does Xero help track profitability ratios?

Xero's reporting features let you generate profit and loss statements and other financial reports that feed directly into ratio calculations. You can share these reports with your accountant and track trends over time.