Return on Equity & Assets

Profit by itself does not tell you whether a company uses its resources well. A billion dollars of profit is impressive from a small capital base and unimpressive from a huge one. Return ratios fix this by measuring profit against the capital used to produce it, which shows how efficiently a business turns resources into earnings. They combine the net income you know from the income statement with the equity and assets you know from the balance sheet.

Return on equity (ROE)

ROE equals net income divided by shareholders equity. It measures how much profit a company earns for every dollar the owners have invested, which makes it one of the most watched gauges of quality. A consistently high ROE often signals a strong, well-run business with durable advantages. But as you will see in a moment, borrowing can flatter it, so a high number is not automatically a good sign.

Return on assets (ROA)

ROA equals net income divided by total assets. It measures how efficiently a company uses all of its assets, whether those assets were funded by debt or by equity, to generate profit. Because it looks at the whole asset base, ROA is a cleaner read on operational efficiency, unaffected by how the company chose to finance itself.

Why ROE usually exceeds ROA

Here is a connection worth internalizing. ROE is almost always higher than ROA, and the gap comes from leverage, meaning the use of debt. Debt lets a company control more assets than its equity alone could fund, which amplifies the return on that equity. So a large gap between ROE and ROA signals heavy borrowing, which boosts returns in good times but magnifies losses in bad ones. This is the same double-edged nature of debt you will study more in the next lesson.

A sky-high ROE can mean a wonderful business, or just a heavily indebted one. The DuPont breakdown tells you which.

The DuPont decomposition

The DuPont framework splits ROE into three drivers so you can see exactly where the returns come from. ROE equals net profit margin, which is profitability, times asset turnover, which is how efficiently assets generate sales, times the equity multiplier, which is leverage. This reveals whether a high ROE rests on fat margins, efficient asset use, or simply piling on debt. That distinction matters enormously for judging quality and risk. Professionals also watch return on invested capital, or ROIC, which compares operating profit to all the capital invested, stripping out financing effects even more cleanly.

Return ratios show how well a company uses its capital, and they hinted that debt can flatter the picture. Next we measure that debt directly, with the debt-to-equity ratio.