What Is ROE (Return on Equity)?

ROE, short for return on equity, is a company's net profit divided by its shareholders' equity, expressed as a percentage. It answers one question: for every dollar shareholders have tied up in the business, how much profit did the company generate over the period.

How it's calculated#

ROE = Net income / Shareholders' equity

Say a company earns $20 million in a year on $100 million of shareholders' equity. Its ROE is 20%, meaning shareholders earned a fifth of their equity stake back as profit that year. Equity itself is what is left on the balance sheet after every liability is subtracted from every asset, so a business that finances more of itself with debt rather than equity has a smaller denominator here, one reason ROE cannot be read in isolation from how a company is financed.

Some investors use average equity, the mean of the beginning and ending balance for the period, instead of the year-end figure, on the reasoning that profit was earned across the whole year against a base that was itself moving. Both versions are common; what matters is checking which one a source is quoting before comparing it against another company's number.

A useful way to see what drives ROE is to split it into three pieces, a method often called the DuPont breakdown: net profit margin (profit per dollar of sales), asset turnover (sales per dollar of assets) and financial leverage (assets per dollar of equity). Two companies can arrive at the identical ROE through very different routes, one earning it through fat margins on modest sales, the other through thin margins on a heavily leveraged balance sheet, and the breakdown is what shows which route a given number actually took.

A real example#

Apple's fiscal-2025 net income was $112.01 billion, reported against stockholders' equity of $73.73 billion at year-end, for an ROE of roughly 152%. That is an extraordinary figure by any ordinary standard, and it says less about the business getting more profitable than about the denominator shrinking: a year earlier, fiscal-2024 net income of $93.74 billion sat against just $56.95 billion of equity, an even higher ROE of about 165%.

Both years' equity is small relative to the size of the business specifically because Apple has spent tens of billions of dollars a year buying back its own shares, retiring stock and reducing the equity base rather than reinvesting all of its profit or building up cash. None of that changes how much profit the company actually earned; it changes only what that profit is being divided by.

What this means for a shareholder#

A rising ROE driven by buybacks is not the same story as a rising ROE driven by the business earning more on the same equity base, and the two are worth telling apart before treating either as evidence of improving quality. Return on invested capital answers a closely related question while controlling for exactly this effect, because it measures profit against both debt and equity together rather than against equity alone.

ROE also says nothing about valuation on its own: a company can post a very high ROE and still trade at a share price that already reflects it, which is where the P/E ratio and the balance sheet it is built on come back into the picture.

A company with negative or near-zero shareholders' equity, the extreme end of what heavy, sustained buybacks can produce, also has very little cushion left if profits ever turn down. Equity is what absorbs a bad year before debt covenants or solvency become a concern, so a consistently high ROE built mainly on a shrinking equity base is worth reading alongside how much of that equity has actually been given back to shareholders, not just how fast the ratio has climbed.

Related terms#

Return on invested capital (ROIC) measures a similar idea while including debt in the base, which keeps a debt-funded buyback from inflating it the way it inflates ROE. A stock buyback is the single most common reason a mature, profitable company's ROE climbs over time without its underlying profitability actually improving, and the same buyback also raises EPS through a different mechanism entirely.