Return on Equity (ROE)
ROE answers 'for every dollar shareholders have invested, how much profit does the company generate?' Higher ROE means more efficient use of equity capital.
Definition
Return on Equity (ROE) measures the profitability of a company relative to shareholders' equity. It tells you how many dollars of profit a company generates for each dollar of equity invested. ROE is a key metric for comparing profitability across companies and is especially important in banking and PE interviews. It connects directly to earnings per share and equity value.
Formula
ROE = Net Income / Shareholders' Equity
Net Income
Bottom-line profit for the period (from income statement)
Shareholders' Equity
Total assets minus total liabilities (from balance sheet) — use average equity for accuracy
Return on Equity
How efficiently a company uses shareholder capital
Net Income
$100M
Shareholders' Equity
$500M
ROE
20%
For every $1 of equity, the company generates $0.20 of profit.
DuPont Decomposition
Tap each component to see what drives it
Return on Equity
20%
10% × 0.8x × 2.5x = 20%
ROE by Industry
Not all ROEs are created equal
Higher ROE isn't always better. Tech has high ROE partly due to low asset intensity, while utilities have low ROE because they require massive capital investment. Always compare within the same industry.
DuPont Decomposition
The DuPont framework breaks ROE into three drivers: ROE = Net Margin × Asset Turnover × Equity Multiplier = (Net Income/Revenue) × (Revenue/Assets) × (Assets/Equity). This reveals whether high ROE comes from profitability (margins), efficiency (asset turnover), or leverage (equity multiplier). A company with 20% ROE driven by leverage is riskier than one driven by high margins.
What Is a Good ROE?
A good ROE depends on the industry. The S&P 500 average is roughly 15–18%. Capital-light businesses (software, consulting) often exceed 25%. Capital-intensive industries (utilities, manufacturing) may be 8–12%. Banks are judged heavily on ROE — top-tier banks target 15%+. Always compare ROE to peers within the same industry.
Limitations of ROE
ROE can be artificially inflated by high leverage — if a company takes on massive debt, equity shrinks and ROE rises even if net income doesn't improve. Stock buybacks also reduce equity and inflate ROE. Negative equity (from accumulated losses or aggressive buybacks) makes ROE meaningless. Always examine ROE alongside ROA and leverage ratios.
Worked Example — With Real Numbers
Company A has net income of $50M and shareholders' equity of $250M. ROE = $50M / $250M = 20%. DuPont: Net margin = 10% ($50M / $500M revenue), Asset turnover = 1.0x ($500M / $500M assets), Equity multiplier = 2.0x ($500M / $250M equity). ROE = 10% × 1.0 × 2.0 = 20%. The 2.0x multiplier tells you half the assets are financed by debt.
Key Takeaways
ROE measures profitability relative to shareholders' equity — higher is generally better
Use DuPont decomposition to understand what drives ROE: margins, efficiency, or leverage
High ROE from leverage is riskier than high ROE from margins
Compare ROE within the same industry — absolute levels vary widely by sector
Stock buybacks and negative equity can distort ROE
Common Mistakes in Interviews
Not using average equity (beginning + ending / 2) when income is earned over a period
Ignoring that high leverage inflates ROE — always check the equity multiplier
Comparing ROE across industries with very different capital structures
How Interviewers Test This
Know the DuPont breakdown cold. If asked 'how can a company increase ROE?', walk through all three levers: improve margins, increase asset efficiency, or take on more leverage — and note the risk trade-off with leverage. Practice with the IB Quiz.
Related Concepts
Directly referenced in this topic
Return on Assets (ROA)
Return on Assets (ROA) measures how efficiently a company generates profit from ...
Net Working Capital (NWC)
Net working capital (NWC) measures the difference between a company's operating ...
Balance Sheet
The balance sheet is a financial statement that reports a company's assets, liab...
Debt-to-Equity Ratio
The debt-to-equity (D/E) ratio measures a company's financial leverage by compar...
More Accounting Concepts
55 more concepts in this category
Related Articles
Topic Guides
Firms That Test This
Related Articles
Practice Return on Equity (ROE) questions
400+ interview questions with AI feedback. Free to start.
Start PracticingMaster Return on Equity (ROE) and 100+ More Concepts
Get the full IB Flash experience and walk into your interview with confidence.
AI Interview Coach
Real-time feedback on your answers
1,000+ Practice Questions
Across IB, PE, HF, VC & more
Financial Modeling Tests
Excel-based skill assessments
Or explore our free tools to get started