Calculate ROE using net income and shareholders' equity. Includes DuPont analysis, industry benchmarks, and sustainable growth rate | Calculator4U
Calculate ROE to measure profitability relative to shareholders' equity.
A return on equity calculator measures how efficiently a company converts shareholders' equity into net profit — answering the fundamental investor question: for every dollar of equity capital invested, how much profit does management generate? ROE = (Net Income ÷ Shareholders' Equity) × 100. A 20% ROE means the company earns $0.20 of profit for every $1.00 of equity — the single most widely used metric by US equity analysts and institutional investors to screen for quality businesses.
Warren Buffett's minimum ROE threshold is 15% sustained over 10 years without excessive debt — a standard that eliminates roughly 85% of US public companies from his investable universe. S&P 500 companies averaged 17–20% ROE historically, with wide dispersion by sector: technology and software companies routinely achieve 25–40%, consumer goods companies with strong brands (Coca-Cola, Procter and Gamble) often exceed 30%, while capital-intensive utilities average only 8–12% due to regulatory rate caps. Always benchmark ROE within the same industry — a 12% ROE is exceptional for a utility but a red flag for a software company.
The critical caveat: high ROE is not automatically good. Apple's 2024 ROE exceeded 100% — not because of extraordinary operational efficiency, but because $93.7 billion in share buybacks has reduced shareholders' equity to near zero. The DuPont decomposition is the essential check: if the Equity Multiplier (Total Assets ÷ Equity) above 3.0 is the primary driver of ROE, the returns are leverage-dependent and fragile to interest rate or earnings changes. ROE driven by high Profit Margin and Asset Turnover with modest leverage is the Buffett ideal — durable, compounding, and low-risk.
Return on Equity (ROE) is a financial ratio that measures how effectively a company generates profits from shareholders' equity—the money invested by owners. ROE is crucial because it shows the efficiency of capital deployment: a company with 20% ROE generates $0.20 of profit for every $1 of equity. Investors use ROE to compare management effectiveness across companies, identify quality businesses with sustainable competitive advantages, and assess whether reinvesting earnings creates value. Warren Buffett famously favors companies with consistent ROE above 15%, viewing it as a hallmark of durable business quality.
Step 1: Find Net Income on the income statement (profit after all expenses, taxes, and interest). Step 2: Find Shareholders' Equity on the balance sheet (Total Assets minus Total Liabilities, or Common Stock + Retained Earnings). Step 3: Divide Net Income by Shareholders' Equity. Step 4: Multiply by 100 to express as a percentage. Example: Net Income of $500,000 ÷ Equity of $2,000,000 = 0.25 × 100 = 25% ROE. For more accurate analysis, use average equity: (Beginning Equity + Ending Equity) ÷ 2.
ROE benchmarks vary significantly by industry due to capital intensity and business models. Technology: 20-35% (asset-light, high margins). Banking/Financial Services: 10-15% (highly regulated, leveraged). Retail: 15-25% (inventory-heavy). Healthcare: 15-20% (R&D intensive). Utilities: 8-12% (capital-intensive, regulated). Consumer Goods: 20-30% (brand power). Real Estate: 5-15% (asset-heavy). An ROE above 15% is generally considered good, but always compare within the same industry. ROE above 25% warrants investigation—it may signal exceptional business quality or excessive leverage risk.
Negative shareholders' equity produces a meaningless ROE figure and should never be compared to companies with positive equity. Negative equity occurs in two scenarios: (1) Accumulated losses — the company has lost more money over its history than it has earned, a sign of serious financial distress. (2) Aggressive share buybacks — a financially healthy company buys back so many shares that equity turns negative (McDonald's, Home Depot, and Boeing all have negative equity for this reason). In scenario 2, ROE becomes mathematically undefined but the company may be highly profitable. Always check whether negative equity reflects losses or buybacks before drawing conclusions.
ROE measures profit relative to shareholders' equity — the return on equity owners' capital specifically. ROA measures profit relative to total assets — the return on all capital deployed, including debt. ROE = Net Income ÷ Equity. ROA = Net Income ÷ Total Assets. The relationship: ROE = ROA × Equity Multiplier (Total Assets ÷ Equity). A company with ROA of 8% and Equity Multiplier of 2.5 has ROE of 20%. For comparing companies with different capital structures, ROA is more revealing — it shows operational efficiency independent of financing decisions. For equity investors, ROE is more directly relevant as it measures return on their specific capital stake.
Sustainable Growth Rate = ROE × Retention Ratio, where Retention Ratio = 1 − Dividend Payout Ratio. This formula shows the maximum rate a company can grow sales and earnings without issuing new equity or increasing financial leverage. Example: a company with 20% ROE that pays 30% of earnings as dividends has a retention ratio of 70% and a sustainable growth rate of 14%. This means it can grow 14% annually using only retained earnings and existing debt capacity. Companies growing faster than their sustainable growth rate must either issue new shares, increase debt, or cut dividends. It is one of the most useful links between profitability ratios and growth strategy.
Five reliable free sources for US company ROE data: (1) Macrotrends (macrotrends.net) — historical ROE going back 10–20 years for most S&P 500 companies, updated quarterly after earnings. (2) SEC EDGAR (sec.gov/edgar) — primary source; calculate ROE directly from 10-K annual report financials for maximum accuracy. (3) Damodaran Online (pages.stern.nyu.edu/~adamodar) — free annual industry average ROE by US sector, updated every January — essential for benchmarking. (4) Yahoo Finance — displays current and trailing 12-month ROE under the Statistics tab for any US ticker. (5) Simply Wall St and GuruFocus — provide 5–10 year ROE trends with quality scoring, free with registration. For Buffett-style screening, filter for companies with 5-year average ROE above 15% and debt-to-equity below 1.0 — a short list of genuinely quality US businesses.