Debt To Capital Calculator

Background.

Every company pays for its assets with some mix of borrowed money and owners' money. The debt-to-capital ratio says what share of that funding is borrowed: interest-bearing debt divided by debt plus shareholders' equity. A result of 40% means that of every dollar of capital, 40 cents came from lenders who must be paid interest on schedule and repaid in full, and 60 cents came from shareholders, who are paid only from what is left.

That split is why lenders and credit analysts watch the number. Interest is a fixed charge. A business funded mostly by borrowing has less room to absorb a bad year before its payments become a strain, while one funded mostly by equity can cut its dividend and carry on. Loan agreements and bond terms sometimes cap the ratio for that reason, and breaching the cap can hand the lender the right to demand early repayment.

What counts as high depends on the industry. Utilities and property companies, with steady cash flows and assets that lenders are comfortable lending against, routinely run far more debt relative to equity than software firms, whose value sits in people and code. Compare a company with its peers and with its own history rather than with a universal line.

The top of the fraction is debt that bears interest — bank loans, bonds, notes and the current portion of long-term borrowing — not every liability. Supplier invoices and accrued wages are obligations, but they come from running the business rather than financing it. Whether to add lease liabilities, pension deficits or minority interest, and whether to use book or market equity, depends on the definition you are matching; the page simply takes the figures you enter.

What is debt to capital calculator?

The debt-to-capital ratio, also called debt to total capitalization, expresses interest-bearing debt as a percentage of total capital, where capital means debt plus shareholders' equity. It runs from 0% for a company with no borrowing towards 100% as equity shrinks; because equity must be above zero here, the result always stays below 100%. It carries the same information as the debt-to-equity ratio on a bounded scale: debt-to-equity of 1.0 is 50% debt to capital.

How to use this calculator.

1. 01Enter Total interest-bearing debt from the balance sheet: short-term borrowings, the current portion of long-term debt and long-term debt. Leave out accounts payable, accrued expenses and deferred revenue.
2. 02Enter Total equity — shareholders' equity from the same balance-sheet date. It must be above zero, so a company whose book equity has turned negative cannot be measured on this scale.
3. 03Enter Total assets from the same statement. It serves only as a consistency check: the page refuses a debt figure larger than total assets, but assets do not change the ratio.
4. 04If you are testing a loan covenant, follow the agreement's definitions exactly, adding leases or other items to the debt figure if it tells you to.

The formula.

Debt-to-capital = D ÷ (D + E) × 100, where D is total interest-bearing debt and E is total shareholders' equity. D + E is the company's capital: the money provided by lenders and owners together. The ratio rises with debt but not in a straight line, because each extra dollar borrowed also enlarges the denominator. It converts directly from debt-to-equity: D/C = (D/E) ÷ (1 + D/E), so a debt-to-equity of 0.667 gives 40%. Total assets do not appear in the equation; they are used only to reject debt larger than total assets. The input that most often swings the result is equity, since share buybacks and accumulated losses can shrink book equity sharply while debt stays put.

A worked example.

Frequently asked questions.

References& sources.

1. [1]OpenStax, Rice University. Principles of Finance, 2022. Chapters 6–10. Retrieved 2026-08-06.
2. [2]U.S. Internal Revenue Service. Tax guidance current 2026. Official forms, instructions and tax topics. Retrieved 2026-08-06.
3. [3]U.S. Securities and Exchange Commission. Investor.gov current 2026. Investment products and risk. Retrieved 2026-08-06.