Return on Equity (ROE)
Key Takeaways
- ROE = Net Income / Shareholders' Equity
- Measures how efficiently a company generates profit from shareholders' investment
- Higher ROE indicates more efficient use of equity capital
- Can be decomposed using DuPont analysis into margin, turnover, and leverage
Definition
Return on equity (ROE) is a measure of financial performance that calculates how much net income a company generates relative to its shareholders' equity. It shows how effectively management is using the money invested by shareholders to generate profits. ROE is expressed as a percentage and is one of the most important profitability ratios for stock investors.
ROE is calculated as: ROE = Net Income / Average Shareholders' Equity. An ROE of 20% means the company generates $0.20 of profit for every $1.00 of shareholder equity. High ROE can result from strong profitability, efficient asset use, or high financial leverage.
Warren Buffett has cited ROE as one of his favorite metrics for evaluating companies. He looks for businesses with consistently high ROE — typically 15% or above — as evidence of durable competitive advantages and superior management.
How It Works
ROE can be decomposed using DuPont analysis into three components: ROE = Net Profit Margin × Asset Turnover × Equity Multiplier. Net Margin (Net Income/Revenue) measures profitability. Asset Turnover (Revenue/Total Assets) measures efficiency. Equity Multiplier (Total Assets/Equity) measures leverage. This decomposition reveals whether high ROE comes from margins, efficiency, or debt.
A company with 10% net margin, 1.5x asset turnover, and 2.0x equity multiplier has ROE = 10% × 1.5 × 2.0 = 30%. If the ROE is primarily driven by the equity multiplier (leverage), it is less impressive than ROE driven by high margins or asset efficiency, because leverage adds risk.
ROE is most meaningful when compared to peers in the same industry and when tracked over time. Industries have different typical ROE ranges: technology companies often achieve 20-40%, banks 10-15%, and utilities 8-12%. Consistency of ROE over 5-10 years is more important than any single year's figure.
Example
Apple (AAPL) reported net income of $97 billion and average shareholders' equity of $65 billion, giving an ROE of approximately 149%. This extraordinarily high ROE is partly because Apple has reduced its equity through massive share buybacks, inflating the ratio. Using DuPont: net margin of 25% × asset turnover of 1.1 × equity multiplier of 5.4 = 149%. The high equity multiplier shows that leverage (from buybacks reducing equity) is a significant driver. By contrast, Johnson & Johnson (JNJ) has a more moderate ROE of 24% with less leverage, which may be more sustainable.
Why It Matters
ROE is one of the most important metrics for equity investors because it directly measures how well a company converts shareholder investment into profit. Companies with consistently high ROE tend to compound shareholder value over time, as they can reinvest earnings at high rates of return.
ROE also helps identify competitive advantages. Companies that sustain ROE above 15-20% for many years typically possess moats — brand power, network effects, switching costs, or cost advantages — that protect profitability from competitive erosion. The stock screener can be used to filter for companies with strong ROE.
Advantages
- Directly measures profitability from the shareholder's perspective
- DuPont decomposition reveals the sources of return
- Enables comparison across companies and industries
- High sustained ROE signals competitive advantages
Limitations
- High leverage can inflate ROE without genuine operational excellence
- Negative equity makes ROE meaningless or misleading
- Share buybacks reduce equity and can artificially boost ROE
- Does not account for risk — high-leverage high-ROE may be fragile
Frequently Asked Questions
Related Terms
Browse more definitions in the financial terms glossary.