DuPont Analysis

DuPont analysis breaks down return on equity into three constituent parts: how much profit the company makes on each sale, how efficiently it uses assets, and how much leverage it employs. By separating these drivers, you can see exactly where operational improvements or declines are coming from.

The three-factor decomposition

ROE = Net profit margin × Asset turnover × Equity multiplier

Let’s say a company reports a 10% ROE. DuPont analysis says this is the product of:

• 5% net profit margin (profit on sales)
• 2.0× asset turnover (sales generated per dollar of assets)
• 1.0× equity multiplier (assets relative to equity, a measure of leverage)

These multiply: 5% × 2.0 × 1.0 = 10% ROE.

Now imagine the company increases ROE to 12%. Which driver changed? Is it now earning 6% on each sale? Using assets more efficiently? Taking on more debt? The DuPont breakdown shows exactly which lever moved.

Net profit margin: pricing power and cost control

The first factor, net profit margin, measures how much profit ends up in the bottom line. A rising net margin suggests the company is improving pricing (raising prices relative to competitors) or controlling costs better than rivals. A falling margin suggests the opposite: pricing pressure or cost inflation.

Compare the company’s margin trend to its industry peers. If the company’s margin is expanding while rivals’ margins are contracting, it has a competitive advantage. If the company’s margin is contracting while rivals maintain theirs, the company is losing competitive position.

Asset turnover: efficiency on the balance sheet

The second factor, asset turnover, is sales divided by total assets. It measures how many dollars of revenue the company generates per dollar of assets on the balance sheet.

A company improving asset turnover is either generating more sales from the same assets (improved efficiency, better inventory management) or shedding underutilized assets. A company with declining asset turnover is either losing sales or accumulating excess assets (a warning sign).

Asset turnover varies wildly by industry. A grocery retailer might have an asset turnover of 3.0 (turns inventory 3 times per year across all assets). A capital-intensive utility might have an asset turnover of 0.5. Compare only within industries.

Equity multiplier: the leverage story

The third factor, the equity multiplier, is total assets divided by shareholders’ equity. It measures how many dollars of assets the company has per dollar of shareholder capital.

An equity multiplier of 1.0 means the company is financed entirely with equity (assets = equity). An equity multiplier of 2.0 means the company has $2 in assets for every $1 of equity — half the assets are financed with debt. An equity multiplier of 5.0 means the company is borrowing $4 for every $1 of equity it has invested.

A rising equity multiplier means the company is taking on more debt — leverage is increasing. This amplifies ROE if the company can invest borrowed money at a return above the cost of debt. But it also increases financial risk.

The five-factor extension

Some analysts extend DuPont to five factors by splitting net profit margin into operating margin and a tax burden ratio:

ROE = Operating margin × Asset turnover × Equity multiplier × (1 − Tax rate)

This further isolates operating performance from tax efficiency. If a company’s ROE is rising because its tax rate is falling (say, due to a one-time tax benefit), this extension makes that clear.

Diagnosing performance changes

Imagine a company’s ROE rose from 12% to 15% over a year. Three scenarios:

Scenario 1: Net profit margin 5%→6%, asset turnover 2.0→2.0, equity multiplier 1.2→1.25. The company improved profitability while modestly increasing leverage. The gain is operationally healthy.

Scenario 2: Net profit margin 5%→5%, asset turnover 2.0→2.4, equity multiplier 1.2→1.25. The company is more efficient with assets, turning inventory faster or collecting receivables quicker. Operationally healthy.

Scenario 3: Net profit margin 5%→5%, asset turnover 2.0→2.0, equity multiplier 1.2→1.5. The company hasn’t improved operations but has tripled its debt. ROE is inflated by leverage, masking stagnation.

Only DuPont analysis reveals which story is true.

The competitive moat reveal

Companies with sustainable competitive advantages often show stable or improving net profit margins and asset turnover while maintaining modest leverage. Companies with eroding moats show rising asset turnover (desperate growth) and rising leverage (desperate financing), even as margins compress.