Interest Coverage and Fixed-Charge Ratios

Interest and fixed-charge coverage analysis compares a defined earnings or cash resource with a defined financing claim. The coverage ratio page maps the major ratio families; the narrower pages explain how a change in numerator or denominator changes the conclusion.

The EBITDA-to-interest coverage ratio adds depreciation and amortization back to EBIT before comparing earnings with interest. The cash interest coverage ratio narrows the denominator to contractually or analytically defined cash interest. Neither EBITDA nor cash interest has a universal adjusted definition.

A fixed charge is the recurring claim that remains when revenue weakens. The related fixed-charge-coverage ratio may include rent, principal, taxes, preferred distributions, or capital spending according to the governing definition.

Questions to Resolve Before Calculation

• Is the numerator EBIT, reported EBITDA, adjusted EBITDA, covenant EBITDA, or cash flow?
• Is interest gross, net, accrued, paid in cash, or adjusted for financing fees and hedges?
• Are rent, leases, scheduled principal, taxes, capex, or preferred dividends included?
• Does the calculation use a quarter, trailing four quarters, annualized period, or pro forma period?
• Which legal entities, currencies, acquisitions, dispositions, and guarantees are covered?
• Is the ratio analytical, disclosed by management, or required by a contract?

For contractual compliance, use the executed agreement and amendments. Reconcile every add-back and exclusion, calculate headroom, and preserve a source trail to the financial statements and covenant certificate.

Common Analytical Errors

• Calling EBITDA cash flow.
• Comparing adjusted ratios without matching adjustment policies.
• Treating noncash interest as economically irrelevant when it increases future claims.
• Ignoring maintenance capex, working capital, taxes, principal, and payment timing.
• Applying a universal “healthy” cutoff rather than the relevant contract and risk context.
• Treating covenant compliance as proof of liquidity, solvency, or investment quality.

Use this branch with leverage, maturity, liquidity, and downside analysis. Coverage ratios are educational tools, not accounting, covenant, credit, legal, tax, or investment advice.

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