Close this search box.

Table of Contents

Price-to-Earnings Ratio (P/E Ratio)


The Price-to-Earnings (P/E) Ratio is a financial metric used to evaluate the valuation of a company. It is calculated by dividing the market value per share by the earnings per share(EPS). This ratio provides a measure of the price that investors are willing to pay for each dollar of a company’s earnings.


Price-to-Earnings Ratio: prahys-tuh-ur-nings rey-shee-ohP/E Ratio: pee-ee rey-shee-oh

Key Takeaways

1. Definition: The Price-to-Earnings (P/E) ratio is a valuation ratio which compares a company’s current market share price to its per-share earnings. It is calculated by dividing market value per share by earnings per share (EPS).

2. Interpretation: A high P/E ratio may indicate overvaluation or future growth expectations. On the other hand, a low P/E ratio could indicate either that the company is undervalued or that its earnings are expected to decline in the future. Thus, its use as a valuation measure is based on comparison to other companies in the same industry or market.

3. Usage: It is a popular tool for investors and analysts to compare different companies within the same industry as well as to compare the current market price of shares to the historical or forecasted earnings of the company. However, it does not account for factors like growth rate or dividend yield which also play a crucial part in a company’s valuation.


The Price-to-Earnings Ratio (P/E Ratio) is a critical financial metric in business used to evaluate the financial health and growth prospects of a company. This ratio, calculated by dividing the market value per share by the earnings per share (EPS), allows investors to understand how much they need to invest in a company to receive one dollar of that company’s earnings. Thus, P/E Ratio measures the relative cost of a company’s shares in relation to its profitability. A high P/E ratio could indicate that the stock’s price is high relative to earnings and possibly overvalued, whereas a low P/E might suggest the opposite. Therefore, this ratio is essential as it helps investors make informed decisions on whether a company’s stock is overpriced or underpriced, providing a snapshot of the market’s expectations about the company’s future earnings growth.


The Price-to-Earnings Ratio (P/E Ratio) serves a significant purpose in the field of finance and business. Primarily, it is used to determine the valuation of a company, giving investors an understanding of what the market is willing to pay for a company’s earnings. This critical ratio provides a method of comparing the relative value or worth of companies. Essentially, the P/E Ratio is a tool for investors to compare the prices of different stocks based on their earnings, which aids in deciding where to invest their money.Additionally, the use of the P/E Ratio varies further based on whether investors are considering the current P/E or the forward P/E. The current P/E reflects the market’s perception of a company’s current performance, while the forward P/E, which is based on projected future earnings, offers insight about the market’s expectations for a company’s future performance. Thus, by comparing a company’s current P/E with its forward P/E, investors can get a sense of whether the market expects the company’s earnings to increase or decrease in the future. Therefore, the P/E Ratio serves an insightful and important purpose in investment decision-making.


Example 1:Apple Inc.As of December 2021, Apple Inc has a P/E ratio of around 28. This means investors are willing to pay $28 for every $1 of earnings it makes in a year. If the P/E is high compared to other similar companies, either the company is expected to grow significantly in the future, or the stock may be overpriced.Example, Inc.As of the same period, Amazon has a P/E ratio of around 76. Despite its high P/E ratio, investors continue to hold or buy the shares due to the company’s continuous profit growth. The high P/E ratio could be justified if the company’s future earnings growth can be robust.Example 3:General Electric CompanyOn the contrary, General Electric, as of December 2021, has a P/E ratio of around 22. The relatively low P/E suggests investors are not expecting significant future growth or the stock may be undervalued. Please note that the P/E Ratio is often used in conjunction with other financial metrics to evaluate a company’s value and future performance. It can differ greatly between industries and does not provide a full picture of the company’s overall health or potential.

Frequently Asked Questions(FAQ)

What is the Price-to-Earnings Ratio (P/E Ratio)?

The Price-to-Earnings Ratio, or P/E ratio, is a financial metric that is broadly used in the valuation of companies. It’s calculated by dividing the current share price by its earnings per share (EPS). The P/E ratio is a simple way to evaluate a company’s financial performance and compare it with others in the industry.

How is the P/E Ratio calculated?

The P/E Ratio is calculated by dividing the market value per share by the earnings per share (EPS). For example, if a company’s share price is $24 and the EPS is $2, the P/E ratio would be 12 (24/2).

What does a high P/E ratio signify?

A high P/E ratio typically indicates that investors expect high earnings growth in the future compared to companies with a lower P/E. However, a high P/E can also suggest that a stock is overvalued and possibly set for a price correction.

What does a low P/E ratio signify?

A low P/E ratio can signify that a company may be currently undervalued, or on the contrary, it may reflect the market’s expectation that the company has poor future growth prospects.

Is the P/E Ratio applicable to all companies?

No, the P/E Ratio is not applicable to all firms. Companies that are not generating profits, and thus have no earnings per share, do not have a P/E ratio.

How can I use P/E Ratio to compare companies?

P/E Ratio is often used to compare the relative valuations of companies within the same sector or industry. A company with a lower P/E Ratio than another one in the same industry might be considered a better value, but it is essential also to compare growth rates, revenue, net income, and other factors.

Can P/E Ratio predict investment returns?

P/E Ratio is a valuation ratio, not a predictor of future returns. While a lower P/E may indicate the possibility of value, it doesn’t guarantee good future returns, much like a high P/E isn’t a definitive sign of a bad investment. It’s just one of many tools investors use when trying to assess potential investments.

How reliable is the P/E Ratio as an investment tool?

While the P/E Ratio is a useful tool, it should never be used in isolation. While it can provide valuable insight into how the market currently values a company, it doesn’t reveal the complete picture. Other factors such as the company’s debt levels, future prospects, and industry conditions should also be considered.

Related Finance Terms

  • Earnings Per Share (EPS): It is a company’s net profit divided by the number of common shares it has outstanding. EPS indicates how much money a company makes for each share of its stock and it’s a major component in P/E ratio calculation.
  • Market Value per Share: This is the price an investor is willing to pay for a single share of a company’s stock. It’s a reflection of what the market believes a company’s future earnings potential is, and it’s used to calculate the P/E ratio.
  • Growth Rate: This is a measure of the rate at which a company’s earnings are expected to grow. Companies with higher growth rates often have higher P/E ratios, as investors may be willing to pay a high price today because of growth expectations in the future.
  • Dividend Yield: This is a financial ratio that indicates how much a company pays out in dividends each year relative to its share price. While P/E ratio measures the relationship between a company’s stock price and its earnings, dividend yield measures the relationship between its dividends and its stock price.
  • Price-to-Book Ratio (P/B Ratio): This is a financial ratio used to compare a company’s market price to its book value. Like the P/E ratio, P/B ratio can provide a sense of whether a company’s stock is over or underpriced relative to its intrinsic value.

Sources for More Information

About Our Editorial Process

At Due, we are dedicated to providing simple money and retirement advice that can make a big impact in your life. Our team closely follows market shifts and deeply understands how to build REAL wealth. All of our articles undergo thorough editing and review by financial experts, ensuring you get reliable and credible money advice.

We partner with leading publications, such as Nasdaq, The Globe and Mail, Entrepreneur, and more, to provide insights on retirement, current markets, and more.

We also host a financial glossary of over 7000 money/investing terms to help you learn more about how to take control of your finances.

View our editorial process

About Our Journalists

Our journalists are not just trusted, certified financial advisers. They are experienced and leading influencers in the financial realm, trusted by millions to provide advice about money. We handpick the best of the best, so you get advice from real experts. Our goal is to educate and inform, NOT to be a ‘stock-picker’ or ‘market-caller.’ 

Why listen to what we have to say?

While Due does not know how to predict the market in the short-term, our team of experts DOES know how you can make smart financial decisions to plan for retirement in the long-term.

View our expert review board

About Due

Due makes it easier to retire on your terms. We give you a realistic view on exactly where you’re at financially so when you retire you know how much money you’ll get each month. Get started today.

Due Fact-Checking Standards and Processes

To ensure we’re putting out the highest content standards, we sought out the help of certified financial experts and accredited individuals to verify our advice. We also rely on them for the most up to date information and data to make sure our in-depth research has the facts right, for today… Not yesterday. Our financial expert review board allows our readers to not only trust the information they are reading but to act on it as well. Most of our authors are CFP (Certified Financial Planners) or CRPC (Chartered Retirement Planning Counselor) certified and all have college degrees. Learn more about annuities, retirement advice and take the correct steps towards financial freedom and knowing exactly where you stand today. Learn everything about our top-notch financial expert reviews below… Learn More