The interest coverage ratio measures how many times a company's operating profit covers its interest payments. It is the cleanest pre-bankruptcy stress signal for a leveraged business.
Formula: Interest Coverage = EBIT / Interest Expense. Some analysts use EBITDA in the numerator for a more cash-flow-friendly version.
Read the ratio as a margin of safety: a coverage of 5x means operating profit can fall 80% before interest payments cannot be met. Coverage of 1x means a single bad quarter triggers default risk. Investment-grade corporates typically have coverage above 5x; sub-3x raises ratings concerns; below 1.5x is distress territory.
For Indian listed companies, RBI's stressed-asset frameworks and rating agency triggers have used 2x or 1.5x as the threshold below which an account is flagged "weak".
Example 1: A telecom company reports EBIT of Rs 4,000 cr and interest expense of Rs 3,500 cr. Coverage = 1.14x. A 15% drop in EBIT pushes coverage below 1 and triggers covenant breach risk. This is the pre-2018 Vodafone-Idea pattern.
Example 2: A FMCG major reports EBIT of Rs 8,000 cr and interest of Rs 200 cr. Coverage = 40x. The company is essentially debt-free in cash-flow terms; rating is AAA.
Adjacent metrics: Debt Service Coverage Ratio (DSCR) extends interest coverage by including principal repayments — used heavily in infrastructure finance. Fixed Charge Coverage includes lease payments. For non-financial corporates, interest coverage is the standard headline.
Always test coverage at through-cycle EBIT, not peak EBIT. The 2008 and 2020 crises showed peak-cycle EBIT can collapse 50%+ in a year for industrials.
Disclaimer: Educational content from MintByte (ARN-314872, MFD). Examples are illustrative. SEBI Investment Adviser registration is in process; we do not recommend specific stocks.