Key Takeaways
- Floating-rate borrowing can transmit interest-rate increases into company expenses faster than fixed-rate debt.
- Debt agreements may impose financial conditions that become harder to satisfy as earnings weaken or interest costs rise.
- Companies approaching large debt maturities can face refinancing pressure even if their existing loans remain current.
How Higher Interest Rates Put Leveraged Companies Under Pressure
A company can report healthy revenue and positive operating profit while becoming increasingly vulnerable to its lenders. This happens when borrowing costs rise faster than its ability to generate earnings.
The interest coverage ratio (ICR) measures how comfortably a business can pay interest from operating earnings. This article uses the EBIT-based formula:
Interest Coverage Ratio = EBIT ÷ Interest Expense
A higher result generally indicates greater interest-paying capacity, while a declining figure signals reduced financial headroom.
How to Calculate the Interest Coverage Ratio
Consider a hypothetical company generating $120 million in EBIT and paying $30 million in annual interest. Its ICR is 4 times. Now assume $300 million of its debt carries a floating interest rate that increases from 5% to 8%. Annual interest on that borrowing rises from $15 million to $24 million.
If total interest expense consequently increases from $30 million to $39 million, while EBIT remains unchanged, coverage falls to approximately 3.08 times. The company remains profitable, but its ability to absorb further financial pressure has weakened.
Why Refinancing Creates a Delayed Risk
Fixed-rate bonds generally retain their contractual interest costs until maturity. Floating-rate loans, however, can become more expensive when their reference rates reset. The pressure can therefore arrive gradually. When older, lower-cost debt matures, a heavily indebted business may need to refinance at less favourable rates.
Research from the Federal Reserve Bank of Boston found that the pass-through of policy rate increases into corporate interest expenses has historically been incomplete and delayed, with peak responses occurring around a year after a policy rate increase.
When Falling Coverage Becomes a Warning
A weaker ratio can reduce a company's financial flexibility. Lenders may demand stronger protections, higher borrowing costs or additional collateral when refinancing becomes necessary.
Some debt agreements also contain financial covenants. Falling below a specified contractual threshold can trigger negotiations or other consequences, depending on the agreement.
There is no universal safe ICR threshold. Industry conditions, earnings stability and debt structure all influence how much coverage a business needs.
TwikUp's Perspective: Look Beyond the Ratio
Investors should write down why a stock is cheap, what could improve the business and which measurable developments would confirm that thesis. They should also consider how individual holdings fit into their overall portfolio because owning several companies does not automatically eliminate concentration risk.
As explained in TwikUp's article on index fund concentration risk and why owning hundreds of stocks may not protect investors, investments can remain exposed to overlapping companies and sectors. If the expected improvements fail to materialize, investors should reconsider the original valuation argument.
Disclaimer
This article is for educational and informational purposes only. It does not constitute investment, financial or trading advice. Interest coverage ratios and debt risks vary across industries and companies. Investors should review financial statements, debt agreements and refinancing obligations before making investment decisions.