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Return on Equity (ROE) Calculator

Calculate a company's financial performance and efficiency generating profit from shareholder capital.

Calculator Parameters
Financial Statements
$
Total profit after taxes and expenses
$
Total Assets minus Total Liabilities
Summary
Return on Equity (ROE)
15.00%
1.5x
Equity Multiplier (Approx)
15.0%
Profit Margin Component
Allocation Split
The DuPont Analysis Breakdown
Net Profit Margin: Req. Revenue Data
Asset Turnover Ratio: Req. Asset Data
Equity Multiplier: Derived Implicitly
Education

The Mechanics of ROE

Why Warren Buffett considers ROE the ultimate test of management efficiency.

The Core Formula

ROE (Return on Equity) is arguably the most important metric for evaluating a company's management. It measures how effectively the leadership team is deploying the actual cash invested by shareholders to generate new profits.

The Formula: Net Income / Average Shareholder Equity

If a company has $100 Million in Shareholder Equity (the book value of the company), and it generates $15 Million in Net Income over a year, its ROE is 15%. This means for every $1 of shareholder money inside the business, management generated 15 cents of profit.

Average vs. Ending Equity

Because Net Income is generated dynamically over an entire 12-month period, but Shareholder Equity is just a static snapshot on a balance sheet at a specific date, analysts use "Average Shareholder Equity". This is simply the Equity at the start of the year plus the Equity at the end of the year, divided by two.

The DuPont Analysis (The 3 Levers)

While ROE is a single number, the brilliant DuPont Analysis breaks ROE down into three distinct operational levers, revealing exactly *how* a company achieved its return:

  1. Net Profit Margin: Are they pricing products highly and cutting operational costs? (Net Income / Revenue)
  2. Asset Turnover: Are they selling those products incredibly fast? (Revenue / Total Assets)
  3. Financial Leverage (Equity Multiplier): Are they aggressively borrowing money (debt) to juice their returns artificially? (Total Assets / Shareholder Equity)
Q&A

Frequently Asked Questions

Common questions regarding ROE manipulation.

What is a good ROE?
A strong ROE is generally between 15% and 20%, though it is completely dependent on the industry. A software company with almost zero physical assets might naturally have an ROE of 35%, while heavily regulated utility companies sit safely at 10%.
Why is too much debt dangerous for ROE?
Debt artificially shrinks 'Equity' relative to total assets. Because Equity is the denominator of the ROE formula, shrinking it mathematically balloons the final ROE percentage. A high ROE built entirely on extreme debt (leverage) will bankrupt the company during an economic downturn.
Does ROA differ from ROE?
Yes. Return on Assets (ROA) measures profit against the *entire* asset base of the company, including assets purchased with borrowed bank money. ROE strips out the debt, isolating purely what the *shareholders* own.
How do share buybacks affect ROE?
When a company buys back its own stock, it physically reduces the 'Shareholder Equity' on its balance sheet. This shrinks the denominator, causing ROE to spike instantly even if Net Income remained completely flat.