DuPont Analysis
DuPont Analysis is a framework that decomposes Return on Equity (ROE) into three or five component ratios — net profit margin, asset turnover, and financial leverage — to identify the specific operational and financial drivers of a company's equity returns.
DuPont Analysis originated at E.I. du Pont de Nemours and Company in the early twentieth century as a tool for comparing divisional performance and has since become a cornerstone of equity analysis worldwide. Its core insight was that identical ROE figures across two companies could arise from entirely different operational configurations, and understanding those differences was essential for assessing the quality and sustainability of returns.
The three-factor DuPont decomposition expressed ROE as: ROE = Net Profit Margin × Asset Turnover × Equity Multiplier. Net Profit Margin (Net Profit ÷ Revenue) captured profitability per rupee of sales. Asset Turnover (Revenue ÷ Total Assets) measured how efficiently the company deployed its assets to generate sales. The Equity Multiplier (Total Assets ÷ Shareholders' Equity) reflected financial leverage — how much of the asset base was funded by debt.
Consider two Indian companies, both with ROE of 18 percent. Company A — a high-margin pharmaceutical brand — achieved this through a 22 percent net margin with modest leverage and moderate asset turnover. Company B — a commodity steel trader — achieved the same ROE through a 2 percent net margin but extremely high asset turnover and substantial leverage. An investor comparing only ROE would see equivalent attractiveness, while DuPont analysis immediately revealed that Company A's returns were driven by durable pricing power whereas Company B's relied on margin-thin high turnover and balance sheet risk.
The extended five-factor DuPont broke the net profit margin further into EBIT margin and the tax burden and interest burden components: ROE = (Net Income ÷ EBT) × (EBT ÷ EBIT) × (EBIT ÷ Revenue) × (Revenue ÷ Assets) × (Assets ÷ Equity). This granularity allowed analysts to separately examine how much of the ROE was attributable to operating efficiency, financial cost management, and tax optimisation — useful for identifying which lever management had pulled to improve or sustain returns.
In Indian banking analysis, DuPont became Return on Equity = (Net Interest Margin + Non-Interest Income − Credit Cost − Operating Cost) × Leverage, with the components often examined as percentage of average assets. This banking-specific DuPont framework showed whether a bank's ROE improvement came from genuine NIm expansion, cost efficiency, lower provisioning (credit quality), or simply more leverage — the last of which was riskier and potentially unsustainable.