Imagine you are reviewing the annual report of a capital-intensive manufacturing firm in India. You notice that 60% of their long-term debt is linked to the MCLR (Marginal Cost of Funds-based Lending Rate) or external benchmarks like the repo rate. As an analyst, you realize that your DCF model’s terminal value and interest coverage ratios are hypersensitive to central bank policy shifts. If the RBI raises rates to combat inflation, the firm’s debt servicing costs will climb immediately, potentially eroding free cash flow for shareholders.
Floating-rate debt, or variable-rate debt, transfers the burden of interest rate volatility from the lender to the borrower. While this is advantageous during a falling interest rate cycle, it introduces significant cash flow uncertainty. For a research analyst, the primary task is to conduct sensitivity analysis on these debt obligations. You must stress-test the company’s ability to maintain its Debt Service Coverage Ratio (DSCR) under varying scenarios of benchmark rate hikes.
If the interest coverage ratio dips below a safe threshold—typically 1.5x to 2x depending on the industry—the firm’s credit rating and equity valuation could suffer.
Consider a case where a infrastructure developer uses floating-rate loans to fund long-gestation projects. While the initial lower interest rate might look attractive for internal rate of return (IRR) calculations, the project becomes vulnerable to ‘basis risk’ if revenue streams are not linked to the same inflation or interest rate indices. A prudent analyst should check for the presence of interest rate swaps or hedging instruments within the company’s treasury notes.
Companies that actively manage this exposure through derivatives are better positioned to protect margins, even when benchmark rates trend upward unexpectedly.
Ultimately, your recommendation on the stock should account for the firm’s ‘interest rate beta.’ A company with high floating-rate debt and little operational flexibility to pass on price increases is a high-risk proposition in a hawkish monetary policy environment. Your valuation model must reflect this by adjusting the discount rate or lowering the projected earnings growth to compensate for the higher probability of financial distress under rate-hiking cycles.1 2
Nuance
Check Your Understanding
A firm has 70% of its debt tied to the external repo rate. Which scenario most directly threatens the firm’s equity valuation from a risk management perspective?
Why might a research analyst examine a company’s use of interest rate swaps when evaluating a portfolio of floating-rate loans?
This is a companion read for Section 4.7 — Terms related to loans from PASS Investment Adviser (Level 1) by Akhilesh Gururani, available on Amazon Kindle.
Copyright © 2026 HABSG Consulting
-
The DSCR measures a company’s available cash flow to pay current debt obligations, calculated as Net Operating Income divided by Total Debt Service. ↩︎
-
Basis risk is the financial risk that the offset between a hedging instrument and the underlying asset will not be perfect, leading to incomplete protection. ↩︎