Divide net income by equity to see how efficiently the business turns owners' capital into profit — plus return on assets for context.
ROE = net income ÷ shareholder equity. It measures how much profit each dollar of owners' capital generates. Very high ROE can come from strong performance OR heavy debt (which shrinks equity), so read it alongside debt-to-equity. General information only.
Return on equity tells owners and investors how hard their invested capital is working: 15% ROE means the business earns 15 cents of profit a year for every dollar of equity. It's a headline profitability metric — but a high ROE driven by heavy borrowing carries more risk than one driven by strong margins.
ROE = net income ÷ shareholder equity
Return on equity asks how much profit a business produces for each dollar the owners have left in it. It is a genuinely useful efficiency measure and also the single easiest headline ratio to flatter, because owners control the denominator. Any action that shrinks equity — taking a distribution, buying back stock, borrowing instead of contributing capital — raises ROE without the business earning a penny more. That is why ROE should never be read on its own.
The defaults are $40,000 of net income, $200,000 of shareholder equity and $350,000 of total assets. ROE is 40,000 ÷ 200,000 = 20%, which the tool rates Excellent. Return on assets is 40,000 ÷ 350,000 = 11.4%.
Those two figures disagree, and the disagreement is the analysis. If assets are $350,000 and equity is $200,000, the business carries 350,000 − 200,000 = $150,000 of debt — a debt-to-equity ratio of 0.75 and an equity multiplier of 350,000 ÷ 200,000 = 1.75×. Multiply the operating return by that multiplier: 11.4% × 1.75 = 20%, exactly the ROE. This is the DuPont identity in its simplest form, and it decomposes the headline cleanly: the business genuinely earns 11.4% on the capital it deploys, and leverage carries that to 20%. Roughly 43% of the ROE is borrowed rather than earned.
Hold profit and assets fixed and have the owner take $100,000 out, so equity falls to $100,000 and borrowing rises to fill the gap. ROE becomes 40,000 ÷ 100,000 = 40%. The business earns exactly the same $40,000 on exactly the same $350,000 of assets — ROA is still 11.4% — but the headline ratio has doubled and debt-to-equity has gone from 0.75 to 2.50. A reader looking only at ROE would conclude the business became twice as good. It became twice as fragile. Run the reverse test on any company whose ROE looks remarkable: check whether equity is unusually small before you conclude the operations are unusually good.
The widely repeated benchmark is that 15% or better is good, and the calculator's own note says so. Treat it as a rule of thumb with a very wide spread: asset-heavy businesses such as manufacturing and utilities structurally sit lower, and asset-light service and software businesses structurally sit higher, so a 12% ROE in one industry can be stronger than a 25% in another. Two comparisons beat any absolute number — the business against its direct peers, and the business against its own three to five year history. And one sanity check is worth more than any benchmark: how much of the ROE survives when you look at ROA instead.
The first is celebrating an ROE that is high because equity is nearly zero; as equity approaches zero the ratio approaches infinity and stops carrying information. The second is that negative equity makes ROE meaningless rather than spectacular — this tool refuses to compute it for exactly that reason. The third is using a year-end equity figure when equity moved a lot during the year; average beginning and ending equity instead, or a mid-year capital injection will make the return look worse than it was. The fourth is comparing a sole proprietorship's ROE to a corporation's without adjusting for the owner's unpaid salary: if you have not paid yourself a market wage, the profit figure is overstated and so is the return.
ROE is a single-period ratio, and its meaning is almost entirely in the trend and the decomposition. To use it seriously you need net income, equity and total assets for several consecutive periods side by side, so you can watch whether an improving ROE came from margin, from asset turnover or from borrowing more. That is a small table, but it has to be maintained. If your books already produce a profit figure each month, extend them with a simple balance-sheet summary so the ratio falls out of numbers you are keeping anyway — the Google Sheets bookkeeping setup gives you the income half, and the assets and liabilities half is two more columns.
Often cited as 15%+, but it varies by industry. Compare a company to its peers and its own history rather than a universal number.
Return on assets ignores how the business is financed, so comparing ROE and ROA shows how much of the return comes from leverage versus operations.
Related: debt-to-equity calculator · profit margin calculator · ROI calculator · all free calculators.
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Last reviewed: September 2026. Free to use, no signup — Return on Equity Calculator by ToolWise Digital.
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