Last reviewed: July 2026.
The interest coverage ratio measures how many times operating earnings cover finance costs. It is a key indicator of financial risk because debt interest must be paid even when profits decline.
Under IFRS 18 terminology, profit before financing and income taxes is often the most appropriate numerator for periods applying IFRS 18.
Interest cover formula
Profit before financing and income taxes ÷ Finance costs
Older analysis may use EBIT or operating profit. State the numerator clearly because operating profit and profit before financing and income taxes can differ.
Worked example
A company reports profit before financing and income taxes of 360,000 CU and finance costs of 90,000 CU.
Interest cover = 360,000 ÷ 90,000 = 4 times
Operating earnings cover finance costs four times.
Interpreting a high ratio
A higher ratio normally indicates greater ability to absorb profit declines or interest-rate increases. However, very high cover can also reflect underuse of debt or an unusually strong temporary profit.
Interpreting a low ratio
Low or falling cover can indicate refinancing risk, covenant pressure, volatile earnings, rising rates or excessive debt. A ratio below one means the selected earnings measure does not cover finance costs.
No universal safe level
Acceptable cover depends on industry, cash-flow stability, asset security, debt maturity and lender requirements. Utilities and subscription businesses can often support different leverage from cyclical or early-stage businesses.
Profit before financing and income taxes
IFRS 18 introduces the subtotal profit before financing and income taxes. This can be more compatible with finance costs than an operating-profit numerator when investing income is presented outside operating profit.
Review the IFRS 18 performance reporting guide.
Which finance costs to include
Include interest and other financing expenses consistent with the chosen numerator and analytical purpose. Consider lease interest, bank interest, debenture interest and relevant foreign-exchange or unwinding effects.
Document exclusions rather than using a convenient figure.
Capitalised borrowing costs
Interest capitalised into qualifying assets may not appear immediately in profit or loss, but it still represents financing cost and future depreciation. Analysts may adjust ratios when capitalisation is material.
Cash interest cover
A cash-based version compares operating cash flow or cash available for debt service with cash interest paid. It can reveal weakness hidden by non-cash profit but is affected by working-capital timing.
Fixed versus floating rates
Floating-rate debt can reduce future cover when benchmark rates rise. Stress testing should model rate resets, hedge terms and debt maturities.
Worked stress test
Current profit before financing and income taxes is 360,000 CU and finance costs are 90,000 CU, giving 4 times cover. If profit falls 20% and finance costs rise to 110,000 CU:
Revised cover = 288,000 ÷ 110,000 = 2.62 times
The downside effect is much larger than the current ratio alone suggests.
Interest cover and gearing
Gearing measures balance-sheet leverage, while interest cover measures earnings capacity. Analyse both because a company can have high debt but strong cover, or moderate debt with weak profit.
See the debt and gearing guide.
Interest cover and liquidity
Accounting profit does not pay interest directly. Review cash forecasts, working capital, facilities and debt-service dates.
Use the short-term solvency guide.
Interest cover and cash flow
Compare earnings cover with operating cash flow and free cash flow. Repeated profit cover with weak cash conversion can indicate receivable growth, inventory accumulation or non-cash gains.
Review the cash-flow linkage guide.
Covenant calculations
Loan agreements often define EBITDA, finance costs, debt and permitted adjustments differently from published accounting ratios. Calculate contractual covenant cover separately and reconcile it to financial statements.
One-off items
Disposal gains, impairment reversals, restructuring costs and litigation can distort cover. Present both reported and carefully justified adjusted analysis without hiding recurring costs.
Negative or near-zero earnings
When the numerator is negative or very small, the ratio can be meaningless. Explain the loss, cash position, funding support and debt obligations rather than reporting an unstable multiple.
Trend and benchmark analysis
Compare several periods and genuinely similar entities. Review whether changes arise from profit, rates, refinancing, acquisitions, lease obligations or accounting classifications.
Debt maturity profile
A company can report adequate current interest cover but face major refinancing risk when principal matures soon. Analyse maturity dates, bullet repayments and access to replacement finance.
Currency exposure
Foreign-currency debt can increase interest and principal burden when exchange rates move against the borrower. Compare debt currency with operating cash inflows and hedging arrangements.
Lease liabilities
Lease interest is part of financing cost under IFRS 16. Including or excluding it can materially affect comparisons between companies that lease assets and those that own them.
Credit rating and lender perspective
Lenders assess interest cover with leverage, security, liquidity, business risk and covenant headroom. A single strong year does not eliminate concern about volatile future earnings.
Improving interest cover
- improve sustainable operating profit;
- reduce unnecessary debt;
- refinance expensive short-term borrowing;
- manage rate and currency exposure;
- dispose of genuinely non-productive assets;
- improve working-capital cash conversion;
- avoid cosmetic adjustments that do not improve cash capacity.
Analysis checklist
- define the numerator and denominator;
- reconcile to published statements;
- include relevant financing costs;
- review cash and covenant cover;
- stress test profit and interest rates;
- compare trends and industry context;
- document adjustments and limitations.
Common mistakes
- using profit after interest as the numerator;
- mixing operating profit and IFRS 18 subtotals without explanation;
- excluding lease or debenture interest inconsistently;
- assuming four times cover is safe for every business;
- ignoring capitalised interest;
- using accounting cover without cash-flow analysis;
- confusing published ratios with covenant definitions.
Key takeaway
Interest cover measures earnings capacity relative to finance costs. Use a compatible numerator, analyse cash and covenants, and stress test the ratio before judging debt risk.
Official learning references: ACCA ratio analysis, ACCA financing alternatives analysis, and ACCA IFRS 18 guide.