Johns Hopkins University · FACULTY OF ACCOUNTING

EN.662.611 Chap.8 DuPont Analysis and Financial Statement Analysis

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Chapter 8 of 12 · EN.662.611

DuPont Analysis and Financial Statement Analysis

The purpose of the DuPont system

DuPont analysis organizes the drivers of return on equity. In the course it supplies the headline of a financial statement analysis and shows where to look for the story behind it.

Return on equity is split into three levers: profitability, measured by net profit margin and driven by cost control on the income statement; efficiency, measured by total asset turnover and driven by asset management on the balance sheet; and leverage, measured by average total assets over average total equity and driven by how far debt is used to magnify returns.

Reward and risk

Profitability times efficiency gives return on assets, which the lecture treats as the reward from performance.

Leverage multiplies that reward into return on equity, but it does so by adding risk. A rise in return on equity driven only by leverage is therefore not the same as a rise driven by better margins or faster asset use.

The pyramid of supporting ratios

The course's return on equity pyramid places the supporting ratios under each lever.

Under profitability sit the common-sized income statement, earnings per share, gross profit and operating profit percentages, the dividend payout ratio and cash flow yield. Under efficiency sit receivables, inventory and payables turnover, their day counts, fixed asset turnover and the cash conversion cycle.

Under leverage sit the current and quick ratios, the debt and debt-to-equity ratios and times interest earned.

From headline to explanation

A written analysis opens with one sentence: the size and direction of the change in return on equity, the levers that drove it and the lever that offset it. Each lever is then explained with the ratios beneath it.

For profitability the key test is whether operating margin moved with net margin, because a gain carried by a one-time non-operating item is not likely to recur.

Writing the analysis the course asks for

The course's objectives include integrating qualitative and quantitative information and communicating recommendations clearly.

In practice that means pairing the ratio story with the business story: a strategic review of strengths, weaknesses, opportunities and threats explains why a margin fell or an asset base grew, and the ratios show how much. A strong analysis ends with a view on what happens next, not only a summary of what happened.

In this chapter

What this chapter covers

  • 01

    Return on equity and its three levers

  • 02

    Net profit margin and cost control

  • 03

    Total asset turnover and asset management

  • 04

    Financial leverage, risk and return on assets

  • 05

    The return on equity pyramid

  • 06

    Writing a DuPont headline

  • 07

    Recurring versus one-time drivers

Worked example · free

Decompose return on equity

Q [5 marks]. AskSia-authored practice. A company earns net income of $90,000 on net sales of $1,500,000, with average total assets of $1,200,000 and average total equity of $500,000. Compute the three DuPont ratios, return on assets and return on equity. The marks shown are an AskSia study allocation, not an official University marking scheme.
Figure 8.1.Figure 8.1. The ratio families the course's return on equity pyramid places under each lever, grouped and abbreviated. Earlier chapters supplied most of them.Return on equityProfitabilitynet profit margingross profit %operating profit %earnings per sharepayout ratioEfficiencytotal asset turnoverDSO, DII, APPturnover ratiosfixed asset turnovercash cycleLeveragefinancial leveragecurrent, quickdebt ratiodebt to equityinterest cover
Figure 8.1. The ratio families the course's return on equity pyramid places under each lever, grouped and abbreviated. Earlier chapters supplied most of them.
  • 1Net profit margin: $90,000 divided by $1,500,000 is 6.0%.
  • 1Total asset turnover: $1,500,000 divided by $1,200,000 is 1.25.
  • 1Financial leverage: $1,200,000 divided by $500,000 is 2.4.
  • 1Return on assets: 6.0% times 1.25 is 7.5%.
  • 1Return on equity: 7.5% times 2.4 is 18.0%, which equals $90,000 divided by $500,000.
Each dollar of sales keeps six cents of profit, each dollar of assets generates $1.25 of sales, and each dollar of equity supports $2.40 of assets. Together they give an 18% return on equity, and the direct calculation confirms the product.
Sia tip — Check the decomposition against net income divided by average equity; if the two differ, an average was taken from the wrong year.
Glossary

Key terms

DuPont Analysis
A decomposition of return on equity into net profit margin, total asset turnover and financial leverage.
Net Profit Margin
Net income divided by net sales, the profitability lever of return on equity.
Total Asset Turnover
Net sales divided by average total assets, the efficiency lever of return on equity.
Financial Leverage
Average total assets divided by average total equity, the risk lever of return on equity.
Return on Assets
Net income divided by average total assets, equal to net profit margin times asset turnover.
Common-Sized Statement
An income statement with every line shown as a percentage of net sales.
FAQ

DuPont Analysis and Financial Statement Analysis FAQ

Why is leverage called risk rather than performance?

Leverage raises return on equity by financing more assets with debt, not by earning more on those assets. The same debt that lifts returns in a good year deepens losses in a bad one.

What should follow the DuPont headline in a written analysis?

An explanation of each lever using the ratios beneath it in the pyramid, ending with a judgment on whether the change is likely to last and what a reader should watch next.

How do I tell whether a margin gain will last?

Compare operating profit percentage with net profit margin. If only net margin rose, the gain probably came from non-operating items such as a one-time settlement, which will not repeat next year.

Study strategy

Exam move

Choose one company's two most recent years, compute the three levers and their percentage changes, and write the one-sentence headline. Then add one supporting ratio under each lever and one sentence on whether the change will last.

Working through DuPont Analysis and Financial Statement Analysis in EN.662.611? Sia is AskSia’s AI Accounting tutor — ask any EN.662.611 DuPont Analysis and Financial Statement Analysis question and get a clear, step-by-step explanation grounded in how EN.662.611 is taught and assessed. Read this chapter free, then take your hardest questions to Sia.

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