What Is Debt-to-Equity Ratio?

The debt-to-equity ratio is one of the most widely used measures of financial leverage. It answers the question: for every pound of equity, how much debt does the company carry? A ratio of 1.0 means equal parts debt and equity; above 1.0 means more debt than equity.

The formula is: Debt-to-Equity = Total Liabilities / Shareholders' Equity. Some analysts use a more focused version that only includes interest-bearing debt (net of cash) rather than total liabilities.

Appropriate leverage levels vary significantly by industry. Capital-intensive businesses like utilities and real estate typically operate with higher debt-to-equity ratios (1.5-3.0) because their stable cash flows can support regular debt servicing. Technology companies and professional services firms tend to have lower ratios (0.3-1.0) as their assets are primarily intangible.

FP&A teams monitor debt-to-equity for several reasons. Bank loan covenants often include maximum leverage ratios, and breaching these triggers default events. Investors assess leverage when valuing the company — higher leverage amplifies both returns and risks. Capital structure decisions about whether to fund growth through debt or equity depend on current leverage levels.

For UK businesses, the interest deduction restriction rules (corporate interest restriction) limit the tax deductibility of interest expenses to 30% of UK EBITDA for groups with net interest exceeding £2M. This makes the cost of high leverage even more significant from a tax planning perspective.