Earnings per share (EPS)
Learn what earnings per share (EPS) is, how to calculate it, and how investors use it to assess profitability.
Published Thursday 6 August 2026
Table of contents
Key takeaways
- Earnings per share (EPS) measures a company's net profit divided by its number of ordinary shares, giving investors a quick snapshot of profitability on a per-share basis.
- You can calculate EPS using the formula: (net profit minus preferred dividends) divided by the average number of ordinary shares outstanding.
- EPS is one of the most widely used financial metrics, but it works best alongside other indicators like the price-to-earnings (P/E) ratio for a more complete assessment.
- Share buybacks and accounting choices can inflate or distort EPS, so always check the underlying profit figures and share count trends.
What is earnings per share (EPS)?
Earnings per share (EPS) is a financial metric that shows how much profit a company generates for each of its ordinary shares. It's one of the most common ways investors and analysts assess a company's profitability.
EPS is calculated by taking a company's net profit, subtracting any preferred dividends, and dividing the result by the average number of ordinary shares outstanding. Companies typically report EPS quarterly and annually as part of their financial results.
For investors evaluating shares listed on the Stock Exchange of Hong Kong (SEHK), EPS provides a straightforward way to compare profitability across different companies. A higher EPS generally signals stronger earnings, which can make a company's shares more attractive.
How to calculate earnings per share
The EPS formula is simple to apply once you know where to find each component. Here's the standard calculation.
EPS = (net profit minus preferred dividends) ÷ average number of ordinary shares outstanding
Each part of the formula plays a specific role.
- Net profit is the company's total revenue minus all expenses, including taxes. You'll find it at the bottom of the income statement
- Preferred dividends are payments made to holders of preferred shares, a special class of shares with priority over ordinary shares, and are subtracted because EPS focuses on earnings available to ordinary shareholders
- Average number of ordinary shares outstanding is usually a weighted average across the period, which accounts for any shares issued or bought back and gives a more accurate figure than a single point-in-time count
Example EPS calculation
Imagine a company listed on the Hong Kong Stock Exchange reports HK$2 million in net profit for the financial year. It pays HK$200,000 in preferred dividends and has an average of 800,000 ordinary shares outstanding.
EPS = (HK$2,000,000 minus HK$200,000) ÷ 800,000
EPS = HK$1,800,000 ÷ 800,000
EPS = HK$2.25
This means the company earns HK$2.25 for every ordinary share. Investors can use this figure to compare performance against other companies in the same industry or to track how the company's profitability changes over time.
Basic EPS vs diluted EPS
There are two main ways to express earnings per share, and it's useful to understand the difference when you're reviewing a company's financial reports.
Basic EPS
Basic EPS uses the standard formula described above. It divides net profit (minus preferred dividends) by the average number of ordinary shares outstanding. This gives you a straightforward measure of profitability based on the shares currently in the market.
Diluted EPS
Diluted EPS takes things a step further by factoring in all potential shares that could come into existence. These include stock options, convertible bonds, and other instruments that could be converted into ordinary shares.
By including these potential shares in the calculation, diluted EPS gives you a more conservative view of a company's per-share earnings. It answers the question: what would EPS look like if every convertible instrument were exercised?
Diluted EPS is almost always lower than basic EPS because the same profit is spread across a larger number of shares. A large gap between a company's basic and diluted EPS can mean there are significant stock options or convertible instruments in play.
What affects a company's EPS
Because EPS depends on both profit and share count, changes to either side of the formula move the number. Here are the main factors that push EPS up or down.
- Share buybacks reduce the number of ordinary shares outstanding, which lifts EPS even if profit stays the same
- New share issuance increases the share count, which spreads profit more thinly and lowers EPS
- Stock splits raise the total number of shares in circulation, which reduces EPS per share without changing the value of the business
- Revenue and profit changes flow straight to the top of the formula, so rising profits lift EPS and falling profits reduce it
Understanding which lever moved the number helps you judge whether a change in EPS reflects genuine performance or a shift in the share count.
What is a good earnings per share?
There's no single number that qualifies as a "good" EPS, because it depends on the industry, the company's growth stage, and how it compares to similar businesses.
A positive and growing EPS generally signals that a company is becoming more profitable over time. A high EPS in one industry might be only average in another. For example, a property company and a technology company listed on the Hong Kong Stock Exchange can have very different EPS benchmarks.
Rather than looking at EPS in isolation, it's more useful to compare a company's EPS to its peers within the same sector and to its own historical performance. Consistent EPS growth over several reporting periods is often a stronger signal than a single high figure.
How EPS is used
EPS is a building block for several types of financial analysis. Here are the most common ways investors and analysts put it to work.
Comparing companies
EPS lets you compare the profitability of different companies on a per-share basis. This is especially useful when comparing companies of different sizes within the same industry, as it normalises profit relative to the number of shares. It sits alongside other profitability ratios that help you weigh performance from more than one angle.
Calculating the price-to-earnings (P/E) ratio
The price-to-earnings (P/E) ratio is one of the most widely used valuation metrics, and it relies directly on EPS. You calculate it by dividing the current share price by EPS. A lower P/E ratio may suggest a share is undervalued relative to its earnings, while a higher P/E ratio can indicate high growth expectations.
Tracking performance over time
Investors watch how a company's EPS changes from quarter to quarter and year to year. Consistent EPS growth can signal a well-managed business, while declining EPS may raise questions about profitability or rising costs.
Trailing EPS vs forward EPS
Trailing EPS is based on actual reported earnings from the past 12 months. Forward EPS uses analyst forecasts to estimate future earnings. Trailing EPS gives you a factual baseline, while forward EPS helps set expectations for where a company's profitability might be heading.
Limitations of EPS
EPS is a useful starting point, but it doesn't tell the full story of a company's financial health. Here are some important limitations to keep in mind.
- EPS doesn't reflect a company's capital structure. A business might show a high EPS simply because it has fewer shares outstanding, while carrying significant debt that increases financial risk
- Share buybacks can inflate EPS artificially. When a company buys back its own shares, the total number of shares decreases, which pushes EPS higher even if actual profits haven't changed
- Accounting choices can affect the number. Companies may use different policies for recognising revenue, depreciating assets, or handling one-off items, which makes EPS comparisons between companies less straightforward
- EPS ignores how efficiently a company uses its assets. Two companies might report the same EPS, but one could be generating its profits far more efficiently than the other
- One-off gains or losses can distort EPS. A large asset sale or restructuring charge can temporarily push EPS up or down in ways that don't reflect ongoing performance
For a more complete picture, use EPS alongside other financial metrics. Ratios like the P/E ratio, return on equity, and net profit margin help you assess a company's performance from multiple angles. You can learn more about tracking financial performance in our guide on how to measure profitability.
Track your business profitability with Xero
Understanding metrics like EPS can help you think like an investor when it comes to your own business. EPS applies to publicly listed companies, but the underlying principle carries across: knowing your profitability is key to making confident financial decisions.
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FAQs on earnings per share
Here are answers to frequently asked questions about earnings per share.
Does EPS tell you everything about a company's value?
No, EPS only reflects profitability on a per-share basis. You should also consider revenue trends, debt levels, cash flow, and valuation metrics like the P/E ratio for a complete assessment.
When should you look at diluted EPS instead of basic EPS?
Check diluted EPS when a company has issued stock options, convertible bonds, or warrants, as these could increase the share count and reduce per-share earnings. It gives you a more conservative view of what each share might actually earn.
Can EPS be negative?
Yes, EPS is negative when a company reports a net loss for the period. A negative EPS means the company lost money for each ordinary share outstanding.
How does EPS affect share price?
Rising EPS can boost investor confidence and increase demand for a company's shares, which may drive the share price higher. Falling EPS can have the opposite effect, leading to a decline in share price.
Where can you find a company's EPS?
You'll find EPS in a company's income statement, which is published as part of its annual and interim financial reports. Companies listed on the Stock Exchange of Hong Kong also make these reports available through HKEXnews.
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Disclaimer
This glossary is for small business owners. The definitions are written with their requirements in mind. More detailed definitions can be found in accounting textbooks or from an accounting professional. Xero does not provide accounting, tax, business or legal advice.