What Is Return on Equity (ROE)?
Return on equity (ROE) is a company's net income divided by its shareholders' equity, shown as a percentage. It measures how efficiently a company turns the money shareholders have invested into profit — a favorite gauge of management quality and profitability.
How ROE Is Calculated
The formula is simple: ROE = net income ÷ shareholders' equity. Take the profit a company earned over a period and divide it by the equity that belongs to its shareholders, then express the answer as a percentage.
Imagine a company earns $10 million in net income and has $50 million of shareholders' equity. Its ROE is $10,000,000 ÷ $50,000,000 = 20%. That means the business generated 20 cents of profit for every dollar of equity. Shareholders' equity is simply a company's assets minus its liabilities, and you will find it on the balance sheet in any 10-K annual report, right alongside net income on the income statement.
What ROE Tells You
ROE answers a pointed question: for every dollar shareholders have put into the business, how many cents of profit does it produce? A higher figure means capital is working harder. Just as important, a consistently high ROE — one that holds up year after year rather than spiking once — can signal a durable, well-run business with a real competitive edge, the kind that can fend off rivals and keep earning strong returns on the money it retains. That is why long-term investors treat ROE as a shorthand for management skill and business quality.
What Counts as a Good ROE
Very roughly, an ROE of 15% to 20% or higher is often considered strong. But that benchmark is only a starting point, because ROE varies a lot by industry — asset-light software companies can post far higher figures than capital-heavy utilities or airlines. The fairest way to judge a number is to compare a company against others in the same sector rather than against the market as a whole. And a single year's ROE can be a fluke; the trend over several years — whether it is steady, climbing, or slipping — matters far more than any one figure.
How Debt Can Distort ROE
ROE has one blind spot worth knowing. Because shareholders' equity sits in the denominator, anything that shrinks equity will push the ratio up — and heavy borrowing does exactly that. A company can load up on debt, use it to buy back shares or fund operations, and watch its ROE rise even though the underlying business is no more profitable and is now carrying more risk. A sky-high ROE built on leverage can look impressive while masking a fragile balance sheet. To avoid being fooled, pair ROE with a company's debt levels and read it alongside EPS and other valuation metrics rather than trusting it on its own.
Practice Comparing Companies Risk-Free
The best way to make ROE click is to look it up for a few companies you know, compare them within the same industry, and watch how the number moves over time. You can do exactly that while paper trading with CustomStocks, a free simulator that lets you research and trade real companies at real market prices using virtual money — so you can connect ROE to real businesses without risking a cent.
Frequently Asked Questions
Return on equity is calculated by dividing a company's net income by its shareholders' equity, then expressing the result as a percentage. For example, a company that earns $10 million in net income on $50 million of shareholders' equity has an ROE of 20%. Both figures come from the company's financial statements.
As a rough guide, an ROE of around 15% to 20% or higher is often viewed as strong, but it varies widely by industry, so it is best to compare a company against its peers. A steady or rising ROE over several years is more meaningful than a single year's number.
Yes. Because shareholders' equity is the denominator, a company that takes on a lot of debt can shrink its equity and boost its ROE without actually becoming more profitable. A very high ROE driven by heavy borrowing can mask real risk, so ROE should always be read alongside a company's debt levels.
EPS (earnings per share) measures total profit divided by the number of shares, showing profit per share. ROE measures profit relative to the equity shareholders have invested, showing how efficiently that capital is used. EPS is about scale per share; ROE is about efficiency. They answer different questions and are best used together.
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