The DuPont formula decomposes ROE into profit margin, asset turnover, and financial leverage to identify the source of shareholder return.
The DuPont formula, also called DuPont analysis or the DuPont identity, decomposes return on equity (ROE) into profit margin, asset turnover, and financial leverage. Instead of treating ROE as one performance score, it shows whether the result came from earnings on sales, efficient use of assets, or a smaller equity base supporting those assets.
The three components are:
When all terms use the same scope and period, revenue and average assets cancel:
For common-shareholder ROE, use net income available to common shareholders and average common equity. If preferred claims are material, combining total net income with common equity breaks the relationship.
Assume a company reports:
Multiplying the components gives ROE:
The direct calculation confirms the result:
The example does not establish that 24% is good, sustainable, or low risk. It identifies the combination of margin, asset use, and leverage that produced the accounting return.
The first two components produce return on assets:
In the example:
Multiplying ROA by the equity multiplier produces ROE when the definitions align:
This bridge shows how leverage can make ROE exceed ROA. It does not mean liabilities automatically create value, because interest cost, credit risk, liquidity, and loss sensitivity also matter.
A five-step version separates operating margin into tax burden, interest burden, and EBIT margin:
| Component | Calculation | Analytical question |
|---|---|---|
| Tax burden | Net income / earnings before tax | How much pretax income remains after tax? |
| Interest burden | Earnings before tax / EBIT | How much operating profit remains after net financing costs and related items? |
| EBIT margin | EBIT / revenue | How profitable are operations before interest and tax? |
| Asset turnover | Revenue / average assets | How productively does the business use recorded assets? |
| Equity multiplier | Average assets / average equity | How much of the asset base is supported by each equity dollar? |
The labels are shorthand, not pure causal measures. Tax burden can reflect discrete tax items, and interest burden can include nonoperating gains or losses depending on the income statement. When EBIT or pretax income is negative or close to zero, the intermediate ratios can reverse signs or become unstable.
| ROE driver | Possible favorable explanation | Important countercheck |
|---|---|---|
| Higher net margin | Better pricing, mix, productivity, or cost control | One-time gains, underinvestment, or excluded recurring costs |
| Higher asset turnover | Better capacity use or working-capital management | Old assets, stockouts, outsourcing, or insufficient capacity |
| Higher equity multiplier | Efficient use of a supportable capital structure | More leverage, weaker loss absorption, or repurchase-driven equity reduction |
| Lower tax burden ratio | Sustainable credits or geographic mix | Temporary tax benefits or valuation-allowance changes |
| Higher interest burden ratio | Lower borrowing cost or debt reduction | Capitalized interest, refinancing risk, or unusual nonoperating income |
An analyst should connect each ratio movement to financial-statement lines, notes, and business events rather than infer a cause from the arithmetic alone.
Income and revenue accumulate over a period, while assets and equity are measured at dates. Beginning-and-ending averages are common, but quarterly or monthly averages may be better after an acquisition, divestiture, recapitalization, major repurchase, or rapid growth.
Company-defined adjusted earnings can be used only if every component remains consistent. For example, excluding an acquired intangible amortization expense from net income while retaining the related acquired assets may improve margin without an equivalent denominator adjustment. A reported adjusted ROE should be reconciled rather than mixed with unadjusted components.
Build the decomposition from the income statement, balance sheet, statement of shareholders’ equity, and notes. The SEC investor bulletin on reading a Form 10-K describes where these statements and management explanations appear. If a public company presents adjusted return measures subject to non-GAAP requirements, review the reconciliation and calculation policy; the SEC’s non-GAAP financial measures guidance addresses clear labeling, consistency, and potentially misleading adjustments.
This page is educational and does not provide accounting, investment, securities, or valuation advice.