The interest coverage ratio measures how easily a company can pay interest on its outstanding debt from its operating earnings. It divides EBIT (earnings before interest and taxes) by interest expense. A higher ratio means the company generates more operating profit relative to its interest obligations, indicating lower financial risk.
An interest coverage ratio of 5.0 means the company's operating earnings are five times its interest expense — it could absorb an 80% decline in operating earnings and still cover its interest payments. A ratio below 1.5 is generally considered risky, and a ratio below 1.0 means the company is not generating enough operating income to cover its interest expense, which is a significant warning sign.
This metric is especially important during periods of rising interest rates, when companies with floating-rate debt see their interest expense increase while their earnings may be flat or declining. The interest coverage ratio is a standard input to credit ratings and debt covenants.