What Is the Debt-to-Equity Ratio? Formula, Benchmarks, and How to Use It

Debt is a tool — used well, it amplifies returns on equity; used excessively, it becomes the primary cause of business failure. The debt-to-equity ratio is the most direct measure of how far a company has leaned into that tradeoff.

How to Calculate the Debt-to-Equity Ratio

The formula is: D/E Ratio = Total Debt ÷ Shareholders’ Equity. Both figures come from the balance sheet. Total debt typically includes short-term borrowings, current portion of long-term debt, and long-term debt obligations. Some analysts use only interest-bearing debt in the numerator; others include all liabilities — lease obligations, accounts payable, deferred revenue. The definition used should be consistent when comparing companies. Shareholders’ equity equals total assets minus total liabilities — it represents what belongs to shareholders after all obligations are settled. Net income that is retained rather than paid out as dividends builds shareholders’ equity over time, gradually lowering the D/E ratio without requiring debt repayment. Example: A company has $4 million in total debt and $10 million in shareholders’ equity. D/E ratio = $4M ÷ $10M = 0.4 (or 40%). For every dollar of equity, the company has 40 cents of debt. A D/E ratio of 1.0 means equal parts debt and equity. Above 1.0, the company is more debt-financed than equity-financed. Below 1.0, equity dominates the capital structure.

What Is a Good Debt-to-Equity Ratio?

There is no universally “good” D/E ratio — the right level depends heavily on the industry. Capital-intensive businesses that generate predictable cash flows can sustain higher leverage than asset-light or cyclical businesses. A D/E ratio of 2.0 that’s alarming for a software company may be entirely normal for a utility. Comparing within the same industry — and against the company’s own history — produces more useful judgments than any fixed threshold.

How Lenders and Investors Use the D/E Ratio

Business lenders evaluate D/E as part of credit underwriting to assess default risk. A highly leveraged company has more fixed debt obligations that must be met regardless of revenue — which increases the probability of default in a downturn. Most commercial lenders have internal D/E thresholds that vary by industry; a business seeking a business loan with a D/E above its industry average will typically face higher interest rates or reduced borrowing capacity. Equity investors use D/E alongside return on equity to distinguish genuine operational efficiency from leverage-inflated returns. In the DuPont analysis framework, the equity multiplier component (Total Assets ÷ Equity) directly captures the D/E dynamic — a high ROE driven by a high equity multiplier signals that leverage is doing the work, not the business itself. Credit rating agencies — Moody’s, S&P, and Fitch — incorporate D/E into their assessments. Upgrades or downgrades driven by changing leverage ratios can affect a company’s borrowing costs across all its debt, not just new issuances.

How Debt Amplifies Returns — and Losses

The relationship between debt and equity returns is not neutral. Debt amplifies both outcomes. When leverage helps: A company that borrows $5 million at 6% interest to fund a project returning 15% earns the spread — 9 percentage points — on borrowed capital it didn’t have to raise through equity. Shareholders benefit without dilution. When leverage hurts: If that same project returns only 4% — below the 6% cost of debt — the company loses money on the borrowed capital and must make up the difference from other sources. In a severe downturn, fixed debt payments can consume cash that would otherwise fund operations, triggering default. This amplification dynamic is why EBITDA-to-debt coverage ratios are used alongside D/E — D/E shows the stock of leverage, while coverage ratios show whether current earnings can service it.

Limitations of the Debt-to-Equity Ratio

D/E is a static snapshot from the balance sheet date — it doesn’t reflect whether debt levels are rising or falling, or whether the company can comfortably service what it owes. A company could have a reasonable D/E but be consuming cash rapidly, making the leverage unsustainable within a year. Negative equity makes the ratio mathematically meaningless. Companies that have bought back shares aggressively — or carried accumulated losses — can show negative shareholders’ equity, producing a negative D/E that defies straightforward interpretation. Industry differences require constant adjustment. Comparing a bank’s D/E of 8.0 to a technology company’s D/E of 0.3 produces no useful signal — the structural reasons for each figure are completely different. Industry-relative benchmarking is the only valid approach. Pairing D/E with return on assets helps confirm whether a company’s leverage is generating proportional operational returns or simply inflating equity metrics.

D/E Ratio vs. Other Leverage Metrics

The debt-to-EBITDA ratio — which shows how many years of EBITDA would be needed to retire all debt — is often more actionable than D/E for credit analysis because it ties leverage to actual cash-generating ability rather than an accounting balance. Most lenders consider a debt-to-EBITDA above 4–5x to be elevated for non-financial companies. The debt-to-income ratio is the personal finance equivalent of D/E — used by mortgage and consumer lenders to evaluate individual borrower risk rather than corporate financial structure.

Frequently Asked Questions

What is a good debt-to-equity ratio for a small business?

For most small businesses, a D/E ratio below 1.5 is considered manageable by commercial lenders. Many SBA lenders and banks prefer to see a D/E at or below 2.0 for loan approval. The right threshold depends on industry, cash flow stability, and the type of financing being sought — asset-backed loans allow more leverage than unsecured credit lines.

Is a lower debt-to-equity ratio always better?

Not necessarily. A very low D/E ratio can mean a company is under-leveraged — leaving potential returns on the table by refusing to use cheap debt to fund growth. The optimal D/E balances the tax advantages of debt (interest is deductible) against the financial risk of over-leverage. A D/E of zero might signal financial conservatism or missed growth opportunities, depending on context.

How does the debt-to-equity ratio relate to return on equity?

They are directly connected through DuPont analysis. The equity multiplier in the DuPont formula — Total Assets ÷ Shareholders’ Equity — captures leverage, and it rises when the D/E ratio rises. A company can improve its ROE by increasing profitability, improving asset efficiency, or by taking on more debt to reduce the equity base. The D/E ratio tells you how much of a company’s ROE comes from that third lever.

What’s the difference between the debt-to-equity ratio and the debt ratio?

The debt ratio (Total Debt ÷ Total Assets) measures what proportion of assets are financed by debt — it uses total assets as the denominator rather than equity. Both ratios measure leverage, but from different angles. A debt ratio of 0.5 means half the assets are debt-financed, which implies a D/E ratio of 1.0 (equal debt and equity). They’re complementary rather than interchangeable.

How do share buybacks affect the debt-to-equity ratio?

Share buybacks reduce shareholders’ equity on the balance sheet, which raises the D/E ratio even if no new debt is added. When buybacks are funded by debt — borrowing to repurchase shares — D/E rises from both sides simultaneously: debt increases and equity decreases. This is why some high-profile companies show very high or even negative equity despite being profitable businesses.