📊 Return on Equity (ROE) Calculator
By ToolNimba Finance Team · Reviewed by ToolNimba Editorial Review, investing and accounting content · Updated 2026-06-19
This calculator is for general education and quick estimates only, not investment, accounting or financial advice. ROE is one ratio among many and can be distorted by debt, share buybacks, one-off gains and accounting choices. Always read the full financial statements and consult a qualified professional before making any investment or business decision.
Enter net income and shareholders equity to see ROE, the percentage profit a company earns on its owners' invested capital.
Return on equity (ROE) tells you how much profit a company generates for every dollar of shareholders equity. It is one of the most widely used measures of how efficiently a business turns its owners capital into earnings. Enter the annual net income and the shareholders equity, and this calculator returns the ROE as a percentage along with a quick interpretation of whether the figure looks weak, healthy or strong.
What is the ROE Calculator?
Return on equity measures the profit a company earns relative to the money shareholders have invested in it. The formula is ROE = net income divided by shareholders equity, expressed as a percentage. If a company earns 50,000 in net income on 250,000 of equity, its ROE is 20%, meaning it produced 20 cents of profit for every dollar of owner capital. Because it links the bottom line of the income statement to the equity section of the balance sheet, ROE is a favourite of investors comparing how well different companies use the capital entrusted to them.
What counts as a good ROE depends heavily on the industry. Capital-light businesses such as software or consultancy can post very high figures because they need little equity to generate profit, while capital-heavy sectors like utilities or manufacturing typically run lower. As a rough rule of thumb many investors treat an ROE in the 15% to 20% range as healthy for an established company, but the only fair comparison is against direct competitors and the company own history over several years.
A crucial caveat is that a high ROE is not always good news. Because equity sits in the denominator, anything that shrinks equity will lift ROE even if profit has not improved. Heavy borrowing (financial leverage) and large share buybacks both reduce equity and can flatter the ratio, while masking rising risk. This is why analysts often break ROE down using the DuPont method into profit margin, asset turnover and leverage, so they can see whether a strong number comes from genuine operating efficiency or simply from taking on more debt.
When to use it
- Comparing how efficiently two companies in the same industry convert shareholder capital into profit.
- Tracking one company ROE across several years to spot an improving or deteriorating trend.
- Screening stocks for consistently high returns on equity as part of a quality-focused strategy.
- Assessing your own small business or partnership to see what return the owners equity is earning.
How to use the ROE Calculator
- Enter the company net income for the period, usually the full-year figure from the income statement.
- Enter the shareholders equity, taken from the balance sheet (total assets minus total liabilities).
- Read off the ROE percentage and the short interpretation of the result.
- For a sharper view, repeat the calculation using average equity (start plus end of year, divided by two).
Formula & method
Worked examples
A company reports net income of $50,000 and shareholders equity of $250,000.
- ROE = net income ÷ shareholders equity
- ROE = 50,000 ÷ 250,000 = 0.20
- Convert to a percentage: 0.20 × 100 = 20%
Result: ROE = 20%, a strong return on the owners capital
A small business earns $12,000 in profit on shareholders equity of $200,000.
- ROE = net income ÷ shareholders equity
- ROE = 12,000 ÷ 200,000 = 0.06
- Convert to a percentage: 0.06 × 100 = 6%
Result: ROE = 6%, a below-average return that is worth comparing to industry peers
A rough guide to interpreting ROE (compare against industry peers, not in isolation)
| ROE range | General read |
|---|---|
| Below 0% | Loss-making, equity is being eroded |
| 0% to 10% | Below average, dig into why |
| 10% to 20% | Healthy for most established firms |
| Above 20% | Strong, but check for high leverage |
How equity affects ROE for a fixed $40,000 net income
| Net income | Shareholders equity | ROE |
|---|---|---|
| $40,000 | $100,000 | 40% |
| $40,000 | $200,000 | 20% |
| $40,000 | $400,000 | 10% |
| $40,000 | $800,000 | 5% |
Common mistakes to avoid
- Assuming a higher ROE is always better. Because equity is the denominator, heavy debt or large share buybacks can shrink equity and inflate ROE without any real improvement in profitability. A sky-high ROE on a thin equity base can signal risk, not strength.
- Comparing ROE across unrelated industries. Capital-light businesses naturally post higher ROE than capital-intensive ones. Comparing a software firm to a utility on ROE alone is misleading, only compare companies in the same sector.
- Using a single year of data. A one-off gain, asset sale or write-down can distort net income for a single year. Look at ROE over three to five years to judge whether the return is consistent and sustainable.
- Mixing up period-end and average equity. Equity changes over the year. Dividing annual income by year-end equity is common, but using average equity (start plus end, divided by two) gives a fairer picture when equity has moved a lot.
Glossary
- Return on equity (ROE)
- Net income divided by shareholders equity, expressed as a percentage, showing profit earned per dollar of owner capital.
- Net income
- A company profit after all expenses, interest and tax for a period, the bottom line of the income statement.
- Shareholders equity
- The owners stake in a company, equal to total assets minus total liabilities on the balance sheet.
- Financial leverage
- The use of borrowed money to fund a business. It can boost ROE but also raises risk.
- DuPont analysis
- A method that breaks ROE into profit margin, asset turnover and leverage to reveal what is driving the return.
Frequently asked questions
What is the ROE formula?
Return on equity is calculated as net income divided by shareholders equity, then multiplied by 100 to express it as a percentage. Net income comes from the income statement and shareholders equity (total assets minus total liabilities) comes from the balance sheet.
What is a good return on equity?
There is no universal number, but many investors treat an ROE in the 15% to 20% range as healthy for an established company. What matters most is how the figure compares to direct competitors in the same industry and to the company own ROE over previous years.
Can ROE be too high?
Yes. A very high ROE can be a warning sign rather than a good thing if it is driven by heavy debt or large share buybacks that shrink equity. Always check whether a strong ROE comes from genuine operating efficiency or simply from financial leverage.
What does a negative ROE mean?
A negative ROE means the company posted a net loss for the period, so it was destroying shareholder value rather than creating it. If equity itself is negative the ratio becomes meaningless, which is why this calculator flags that case instead of returning a misleading number.
Should I use net income before or after tax?
Use net income after tax, the bottom-line profit. ROE is meant to reflect the actual return left for shareholders once all expenses, interest and taxes have been paid, so the pre-tax figure would overstate the return.
What is the difference between ROE and ROI?
ROE measures profit relative to shareholders equity and is used to judge a company efficiency, while ROI (return on investment) measures the gain on a specific investment relative to its cost. ROE is a company-level ratio, ROI is usually applied to an individual project or holding.
Sources
- Return on Equity (ROE) , Investopedia
- How to Read a Balance Sheet , U.S. Securities and Exchange Commission