The debt-to-equity ratio (D/E) is a company's total debt divided by its shareholders' equity, both taken from the balance sheet. It shows how many dollars of debt the company carries for each dollar that its owners have put in or left in the business. A ratio of 0.5 means 50 cents of debt per dollar of equity. A common variant, net debt to equity, subtracts the company's cash from the debt first. How much debt is normal depends heavily on the industry, so the figure is a question to look into, not a verdict. Definitions also differ: some sources divide total liabilities, not only borrowings, by equity, so check which one a source uses before comparing.
Worked example
Company A has $50 million of total debt and $100 million of shareholders' equity. Debt-to-equity ratio = $50 million ÷ $100 million = 0.5. Now say it also holds $10 million in cash. Net debt = $50 million minus $10 million = $40 million, so net debt to equity = $40 million ÷ $100 million = 0.4.
Why it matters
Debt has to be repaid with interest whether the year goes well or badly, so the ratio is a quick first look at how much pressure a company's financing puts on it. The main pitfall is reading it without context: utilities, banks and real-estate firms normally run far more debt than software or consumer brands, and a company with negative equity (after large losses or buybacks) produces a ratio that cannot be compared at all. Look at it next to interest coverage and the current ratio, and compare it with similar companies and with the company's own past years.
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Frequently asked questions
There is no single good level. It depends on the industry, on how stable the company's income is and on interest rates. Capital-heavy businesses such as utilities and banks usually run much higher ratios than software firms, so compare a company with its peers and its own history rather than with a fixed number.
Debt-to-equity uses total debt. Net debt to equity first subtracts the cash the company holds, because that cash could repay part of the debt. A company with a lot of debt and a lot of cash can look very different on the two measures.
Yes. If shareholders' equity is below zero, which can follow large losses or big share buybacks, the ratio turns negative and is not meaningful for comparison. It is a prompt to read the balance sheet more closely.
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