What Is Return on Equity (ROE)?

Return on equity (ROE) measures how efficiently a company turns shareholders’ money into profit. It’s calculated as net income divided by shareholder equity, expressed as a percentage: a company with $10 million in net income and $50 million in equity has an ROE of 20%, meaning it generated 20 cents of profit for every dollar shareholders have invested in the business.

The formula

ROE is calculated as:

Net income ÷ shareholder equity

Both inputs come straight from the three financial statements: net income from the income statement, shareholder equity from the balance sheet. Because equity is a balance-sheet snapshot that changes over the year (buybacks, dividends, and retained earnings all move it), a more precise version uses average equity — the mean of the beginning and ending balance for the period — rather than a single point-in-time figure, especially for companies with large or lumpy stock buybacks.

What a “good” ROE looks like

There’s no universal threshold, because capital intensity varies enormously by industry. A software company with few physical assets can run ROE well above 20% on a lean equity base, while a utility or a bank — businesses that require large amounts of capital to operate at all — often sees healthy ROE in the low double digits. The useful comparison is almost always within an industry: ROE against direct competitors, and ROE for the same company across several years, rather than against some fixed cutoff.

A rising ROE over time is generally a good sign, but where the improvement comes from matters — see below.

Why ROE can be misleading on its own

ROE has one significant weakness: it can be inflated by debt without any real improvement in operating performance. Shareholder equity sits in the denominator, and equity shrinks when a company borrows money to fund a buyback instead of using retained earnings. A company that takes on debt to repurchase its own shares reduces its equity base, which mechanically raises ROE even if net income hasn’t moved at all.

This is why ROE is almost always read alongside leverage, not in isolation. A useful decomposition, known as the DuPont analysis, splits ROE into three components multiplied together:

Net margin (net income ÷ revenue) × asset turnover (revenue ÷ assets) × leverage (assets ÷ equity)

Two companies can post the same 25% ROE for very different reasons: one might have thin margins but sweat its assets hard through high turnover, while the other has fat margins but got there mostly by piling on leverage. The DuPont breakdown separates operating quality (margin, turnover) from financial engineering (leverage), which is the piece a headline ROE number hides.

ROE vs related ratios

Metric	What it measures	Denominator
Return on equity (ROE)	Profit per dollar of shareholder equity	Shareholder equity
Return on assets (ROA)	Profit per dollar of total assets	Total assets
Gross, operating, and net margin	Profit as a share of revenue at each stage	Revenue
P/E ratio	Price paid per dollar of earnings	Share price

Return on assets (ROA) is the metric that strips out the leverage effect ROE is prone to, since it divides by total assets rather than equity — a company that borrows heavily sees its ROA stay flat even as debt inflates its ROE. Comparing the two side by side is a quick way to spot how much of a company’s ROE is coming from debt.

How investors use it

ROE is one of the standard inputs into judging whether a company has a durable competitive advantage — what’s often called an economic moat. A company that sustains a high ROE for years, without a corresponding rise in leverage, is typically converting some structural advantage (pricing power, brand, network effects, low-cost production) into consistently efficient use of capital. A single strong quarter tells you much less; investors generally want to see ROE held up across a full business cycle before treating it as a sign of quality rather than a temporary favorable mix of margin and leverage.

It’s also a common building block for other valuation shortcuts — for example, comparing ROE to the P/E ratio an investor is being asked to pay can help sanity-check whether a premium valuation is backed by genuinely efficient capital use or just market enthusiasm.

The takeaway

Return on equity tells you how much profit a company squeezes out of every dollar shareholders have put in, but the number alone doesn’t say whether that efficiency comes from strong operations or from leverage doing the work. Pair it with return on assets or a full DuPont breakdown before treating a high ROE as evidence of quality, and always compare it against industry peers and the company’s own multi-year trend rather than a fixed benchmark.