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DuPont Analysis: Breaking ROE Into Margin, Turnover, and Leverage

For educational purposes only; not investment advice.

Direct answer

Section titled “Direct answer”

DuPont analysis breaks return on equity, or ROE, into the drivers behind the headline number:

ROE = net margin × asset turnover × equity multiplier

This helps investors see whether high ROE comes from strong profitability, efficient asset use, or financial leverage.

How it works

Section titled “How it works”

Net margin measures how much profit a company keeps from each dollar of revenue. Asset turnover measures how efficiently assets generate revenue. The equity multiplier measures leverage by comparing assets with shareholders’ equity.

Two companies can both report 20% ROE but have very different quality. One may have high margins and moderate leverage; another may have thin margins and high leverage.

DuPont analysis works best when accounting periods, one-time items, asset bases, and business models are comparable. Retailers, banks, software companies, and utilities can have very different normal margins, turnover, and leverage.

Example

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Company A:

20% ROE = 10% net margin × 1.0 asset turnover × 2.0 equity multiplier

Company B:

20% ROE = 4% net margin × 1.25 asset turnover × 4.0 equity multiplier

Both show 20% ROE. Company A relies more on profitability, while Company B relies more on leverage. If sales fall or borrowing costs rise, Company B may be more fragile.

Risks

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  • Leverage masking: High ROE can come from high debt or low equity, not superior operations.
  • Accounting distortion: Buybacks, impairments, and accumulated losses can shrink equity.
  • Business-model mismatch: Different industries naturally have different margin and turnover profiles.
  • One-time item risk: Gains, charges, or tax effects can distort net income.
  • Cash-flow gap: ROE can look strong even when profit is not converting into cash.

Common misconceptions

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High ROE is not automatically high quality. The source of ROE matters.

Low asset turnover is not always bad. Some asset-heavy businesses are designed that way.

DuPont analysis is not a valuation model. It explains profitability drivers and should be combined with price, cash flow, and risk analysis.

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Sources

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  • SEC: financial-statement and 10-K reading guidance.
  • Corporate Finance Review: discussion of ROE limitations.