How to Analyze Debt: Debt-to-Equity and Interest Coverage

Short answer

Debt-to-equity is total debt divided by shareholders' equity, and interest coverage is operating income (EBIT) divided by interest expense. As a rough guide, coverage below 1.5x signals real strain and above 5x is comfortable, but the right level depends heavily on the industry.

Live numbers from Cluenex data

Utilities debt to EBITDA
5.5xas of Oct 14, 2026
Real Estate debt to EBITDA
5.1xas of Oct 14, 2026
Communication Services debt to EBITDA
2.4xas of Oct 14, 2026
Industrials debt to EBITDA
1.5xas of Oct 14, 2026
Healthcare debt to EBITDA
1.1xas of Oct 14, 2026

Key takeaways

  • Debt-to-equity = total debt ÷ shareholders' equity. It shows how much of the business is funded by borrowing, but it breaks when equity is negative or tiny.
  • Interest coverage = EBIT ÷ interest expense. Below 1.0x means operating profit does not cover interest; below 1.5x is a common warning zone; above 5x is comfortable.
  • Net debt to EBITDA (total debt minus cash, divided by EBITDA) estimates how many years of earnings it would take to repay debt. Compare it with the company's own industry, which is [[stat:sector-benchmarks.debt_ebitda.all|the all-sector median debt to EBITDA]] across large US stocks.
  • Direction matters as much as level: debt rising faster than earnings, or a big maturity wall, is a warning even when today's ratios look fine.
  • Thresholds are rules of thumb, not laws. Utilities and real estate carry far more debt than technology companies and can still be healthy.

What does it mean to analyze a company's debt?

Analyzing debt means checking two things: how much a company owes compared with what it earns or owns, and whether it can comfortably pay the interest. Debt is not bad by itself. Borrowing at 5% to fund a project that earns 15% helps shareholders. Borrowing so much that a weak year threatens the interest payment hurts them.

The numbers come from the balance sheet and income statement in a company's 10-K and 10-Q filings with the SEC. For a refresher on the statements themselves, see how to read a balance sheet.

What is the debt-to-equity ratio?

Debt-to-equity (D/E) is total debt divided by shareholders' equity. It shows how many dollars of borrowing the company uses for each dollar owners have put in or left in the business.

D/E = Total Debt ÷ Shareholders' Equity

Total debt here means interest-bearing obligations: short-term borrowings, the current portion of long-term debt, long-term debt and finance lease obligations. Accounts payable is usually left out. Some analysts use total liabilities instead, so always check which version a data site uses before comparing numbers.

Worked example: a company has $400M of debt and $800M of equity. D/E = 400 ÷ 800 = 0.5. A second company with $900M of debt and $300M of equity has D/E = 3.0, so it relies much more on lenders.

A common reading is that below 1.0 is conservative, 1.0 to 2.0 is moderate and above 2.0 to 3.0 is heavy. These are only starting points. The right level depends on the industry.

Why can debt-to-equity be misleading?

D/E gets distorted when equity is very small or negative. Equity falls when a company buys back lots of stock or books large losses, so a financially strong company can show a negative or meaningless D/E.

That is why a negative D/E does not automatically mean distress. It means the ratio cannot be used, and you should switch to interest coverage and net debt to EBITDA. Accounting choices, such as old assets carried at low book values, also change equity. For more on buybacks, see what a stock buyback is.

What is the interest coverage ratio?

Interest coverage is EBIT (earnings before interest and taxes, roughly operating income) divided by interest expense. It tells you how many times over the company's operating profit could pay its yearly interest bill.

Interest Coverage = EBIT ÷ Interest Expense

Worked example: EBIT of $300M and interest expense of $60M gives 300 ÷ 60 = 5.0x. If EBIT drops 40% to $180M, coverage falls to 3.0x. If it drops 80% to $60M, coverage is 1.0x and every dollar of operating profit goes to lenders.

Interest coverage Common reading
Above 5x Comfortable cushion
3x to 5x Adequate, worth monitoring
1.5x to 3x Thin margin for a bad year
Below 1.5x Warning zone
Below 1.0x Operating profit does not cover interest

These bands are widely used rules of thumb, not official standards. Cyclical businesses, whose profits swing with the economy, need a bigger cushion than steady ones, because EBIT can fall quickly.

What is net debt to EBITDA?

Net debt to EBITDA divides debt minus cash by EBITDA (earnings before interest, taxes, depreciation and amortization). It roughly says how many years of current earnings it would take to repay the debt. See what EBITDA is for how that earnings figure is built and where it falls short.

Net Debt = Total Debt - Cash and Equivalents
Net Debt / EBITDA = Net Debt ÷ EBITDA

Worked example: $1,000M of debt and $500M of cash gives net debt of $500M. With EBITDA of $200M, the ratio is 500 ÷ 200 = 2.5x.

Lenders and credit analysts often treat figures below about 2x to 3x as comfortable and above 4x to 5x as heavy, but again the industry matters. Because the ratio uses cash, it avoids overstating the risk of a cash-rich company. Cash can be trapped overseas or needed to run the business, so do not assume all of it is free to repay debt.

How much debt is normal for each sector?

Normal debt varies a lot by industry. Businesses with steady, contract-like cash flows can carry more debt than businesses whose profits swing. The table shows the current median debt to EBITDA for large US stocks by sector.

Sector Median debt to EBITDA
Utilities 5.5x
Real Estate 5.1x
Communication Services 2.4x
Industrials 1.5x
Healthcare 1.1x

Utilities and real estate sit at the top because regulated rates and long leases make cash flow predictable. Technology often shows a ratio near zero or below because many such companies hold more cash than debt. Compare a company with its own industry, not with the whole market.

What are the warning signs in a company's debt?

The main warning signs are floating-rate debt, debt coming due all at once, and debt growing faster than earnings. Each can turn a fine-looking ratio into a problem.

  • Floating-rate debt. Interest on variable-rate loans rises when market rates rise. A 2 percentage point increase on $5B of floating debt adds $100M a year in interest. If EBIT is $1B and interest was $250M (4.0x coverage), interest becomes $350M and coverage falls to about 2.9x.
  • Maturity concentration. Debt due in one year must be repaid or refinanced. The debt maturity table is in the notes of the 10-K. Evenly spread maturities are safer than one big wall.
  • Debt outgrowing earnings. If debt grows 20% a year and EBITDA grows 5%, leverage climbs every year. Watch the trend over several quarters, not one reading.

Also check the cost of debt: the interest rate the company pays compared with what its investments earn. For a related view of whether payouts are affordable, see dividend sustainability.

When do these debt rules not work?

The ratios fail whenever the inputs are unreliable or the business model is different. Banks and insurers, for example, are built on borrowing, so D/E and EBITDA-based measures do not apply to them in the usual way.

Other limits:

  • Negative or tiny equity makes D/E meaningless.
  • One bad year of EBIT can make coverage look alarming for a healthy cyclical company, and one great year can flatter a weak one.
  • Off-balance-sheet items, such as operating leases and pension obligations, can add real commitments that simple ratios miss. Read the footnotes.
  • Thresholds are generic. A 4x ratio can be fine for a utility and dangerous for a retailer.
  • Cheap stocks with heavy debt can be traps rather than bargains. See value trap vs bargain.

What this means for you

You do not need a spreadsheet model. A short, repeatable check on each company you own or consider is enough.

  1. Pull three numbers from the latest 10-K or 10-Q: total debt, cash and EBIT (operating income). Add EBITDA if shown.
  2. Compute interest coverage, net debt to EBITDA and, if equity is healthy, D/E.
  3. Compare each with the company's own industry and with its own readings from the last four to eight quarters.
  4. Open the debt note in the 10-K and look at when the debt matures and how much is floating-rate.
  5. Ask a stress question: if operating profit fell by a third, would coverage still stay above 1.5x?

If you use a research tool, Cluenex scores financial health as one of four business quality checks, from 0 to 10 against the company's own industry, and each stock has a free public page at cluenex.com/stocks/ with its business quality and main risk. Whatever tool you use, check the numbers against the filing. Debt ratios are a risk check, not a prediction, and they say nothing alone about whether a stock is a good buy.

Questions people ask

What is a good debt-to-equity ratio?

Below 1.0 is generally seen as conservative and 1.0 to 2.0 as moderate, but a good level depends on the industry. Utilities and real estate companies routinely run higher without being unhealthy, while a technology company with a high ratio deserves a closer look.

What interest coverage ratio is considered safe?

Many analysts treat 3x as adequate and above 5x as comfortable, with below 1.5x as a warning zone and below 1.0x meaning operating profit does not cover interest. Cyclical companies need a larger cushion because their earnings can drop quickly.

What is the difference between gross debt and net debt?

Gross debt is all interest-bearing borrowing. Net debt is gross debt minus cash and equivalents, so a company with $2B of debt and $1.5B of cash has net debt of $500M. Net debt gives a fairer picture for cash-rich companies, though some cash may not be freely available.

Why can a company have negative equity and still be healthy?

Large buybacks or past losses can push book equity below zero even when a company earns strong profits and covers its interest easily. In that case D/E is not useful, so check interest coverage and net debt to EBITDA instead.

How do rising interest rates affect companies with debt?

Floating-rate debt costs more immediately when rates rise, while fixed-rate debt costs more only when it matures and is refinanced at higher rates. Companies with mostly fixed, long-dated debt are more insulated in the short term.

Sources

  1. Investor.gov: Financial Ratios (Glossary), U.S. Securities and Exchange Commission
  2. EDGAR: Search Filings (10-K and 10-Q), U.S. Securities and Exchange Commission
What changed on this page
  • : Rewritten and fact-checked: clearer short answer, primary sources added, outdated details removed.
  • : Imported from learn.cluenex.com
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