Return on Equity: The Investor's Profitability Lens
Return on Equity (ROE) is the metric investors watch most closely when evaluating a business's profitability. It answers the fundamental question: for every dollar of equity invested in this business, how much profit does it generate? A high ROE means the business is efficient at converting equity capital into earnings — the hallmark of a well-run, valuable company.
Warren Buffett has repeatedly cited sustained high ROE as one of the key indicators of a business with durable competitive advantage (a "moat"). Businesses like Apple and Coca-Cola consistently generate ROEs above 30–40% because of their pricing power, brand value, and efficient asset use.
Frequently Asked Questions
What is Return on Equity (ROE)?
ROE = Net Income / Shareholders' Equity × 100. It measures how efficiently a business generates profit from the equity invested in it. A 20% ROE means the business generates $0.20 in profit for every $1 of equity.
What is a good ROE?
A ROE above 15–20% is generally considered strong. The S&P 500 average ROE is around 14–15%. High-quality businesses often sustain ROE above 20% consistently. Compare ROE to your industry average and cost of equity capital.
What is the DuPont analysis?
DuPont analysis breaks ROE into three components: Net Profit Margin × Asset Turnover × Equity Multiplier. This reveals whether high ROE is driven by profitability (good), efficiency (good), or excessive leverage (risky).
Can ROE be misleading?
Yes. A company with very high debt can show high ROE because the equity base is small, but this is driven by leverage, not operational excellence. Always analyze ROE alongside the D/E ratio to understand whether high returns are earned or leveraged.
How is ROE different from ROI?
ROE measures returns on equity specifically — the owner's/shareholder's stake. ROI measures returns on total investment (debt + equity). ROE is more relevant for equity investors; ROIC (Return on Invested Capital) or ROA are useful for assessing overall business efficiency.