Fixed vs Floating Rate Debt Explained
After choosing between organic and inorganic growth, the next finance trade-off is often how to fund that growth: should debt be fixed or floating? In India, this matters because most corporate lending is floating rate linked to MCLR or Repo Rate, while fixed rate is available in bond markets. Interviewers test whether you can frame the answer as a treasury decision, not just a lowest-rate comparison.
- In India, most corporate lending is floating rate linked to MCLR, which means Marginal Cost of Funds-based Lending Rate, or Repo Rate.
- Fixed rate is available in bond markets.
- The choice depends on interest rate outlook and duration of borrowing.
- Fixed rate gives rate certainty because it is locked in, while floating rate resets quarterly or annually.
- Current India rates are Bond: 7.5-8.5% and MCLR: 8.8-9.3%, so fixed is cheaper today.
- If rates fall, fixed rate creates opportunity cost, while floating rate gives the benefit as rates fall.
- Typical users are long-term infra and housing for fixed rate, and working capital and short-term borrowing for floating rate.
Big Picture: The Treasury Trade-off
Fixed versus floating debt is a treasury trade-off between rate certainty, expected RBI rate movement, borrowing duration, and matching tenor to asset life. Fixed rate works when rate certainty is valuable and rates are expected to rise; floating rate works when RBI is expected to cut and the borrower can accept resets.
MCLR means Marginal Cost of Funds-based Lending Rate. IRS means interest rate swap, which is used to convert floating-rate bank loans to fixed-rate obligations and eliminates interest rate risk.
What Fixed Rate Debt Means
Fixed rate debt gives rate certainty because the rate is locked in. In India, fixed rate is available in bond markets, and typical users include long-term infra and housing.
The key benefit is certainty. If rates are expected to rise, fixed rate is attractive because the borrower avoids future reset risk. The key cost appears if rates fall: fixed rate creates opportunity cost because the borrower does not benefit from lower rates.
What Floating Rate Debt Means
Floating rate debt does not give rate certainty because it resets quarterly or annually. In India, most corporate lending is floating rate linked to MCLR or Repo Rate.
Floating rate is useful when RBI is expected to cut because rates fall and the borrower benefits. Typical users include working capital and short-term borrowing, where the tenor is shorter and the borrower may be more willing to accept rate resets.
RBI MCLR and Repo Linkage in India
RBI means Reserve Bank of India. RBI MCLR linkage: After 2016, all new floating loans linked to MCLR. From 2019, external benchmark Repo linkage mandatory for retail loans. Corporate loans: MCLR or T-bill + spread.
T-bill means Treasury Bill. Current repo rate: 6.5% (May 2024).
RBI Repo Rate Mechanism: The repo rate is the rate at which RBI lends to banks short-term. It anchors short-term interest rates. Transmission: RBI ↑ Repo → Banks' cost of funds ↑ → MCLR ↑ → Loan rates ↑ → Borrowing ↓ → Inflation ↓.
Note: All figures are illustrative/approximate and for educational purposes only. Sources: Company annual reports, SEBI filings, RBI data, and publicly available information.
Hedging and Asset-Liability Matching
For hedging, fixed rate works as a natural hedge. Floating rate requires IRS, or interest rate swap.
In an interest rate swap, there is no exchange of principal - only net interest payments are exchanged. It is used by Indian corporates to convert floating-rate bank loans to fixed-rate obligations, eliminate interest rate risk, speculate on interest rate direction, and support asset-liability management by banks.
ALM means Asset-Liability Management: matching asset and liability maturities to control interest rate and liquidity risk. For fixed versus floating debt, the practical rule is to match tenor to asset life.
Worked Example: Floating Loan Converted to Fixed Cost
Tata Motors has a ₹500 Cr floating-rate loan at MIBOR + 150 bps, currently 8%. CFO expects RBI to hike rates. Tata Motors enters an IRS: pays fixed 9% to swap counterparty, receives MIBOR + 150 bps.
Now Tata Motors' effective cost = 9% fixed regardless of rate changes. If MIBOR rises to 8%, Tata Motors saves; if MIBOR falls, it costs more - but certainty is gained.
The learning is the same as the treasury trade-off: fixed rate or a swap can reduce uncertainty, but if rates fall, the borrower gives up the benefit of lower floating rates.
Structuring a Fixed vs Floating Rate Debt Explained Interview Answer
"In India, should a corporate borrower choose fixed rate or floating rate debt when most corporate lending is linked to MCLR or Repo Rate?"
Do not say fixed rate is always safer or floating rate is always cheaper. Frame the answer around interest rate outlook, duration of borrowing, rate certainty, hedging, and matching tenor to asset life.
The most frequent error is choosing purely on today's rate. That misses the treasury trade-off: fixed may be cheaper today, but it creates opportunity cost if rates fall, while floating benefits from rate cuts but exposes the borrower to reset risk.
Conclusion
Fixed versus floating rate debt is not a one-line answer about which rate is lower. In India, the right choice depends on MCLR or Repo linkage, RBI rate outlook, borrowing duration, hedging needs, and whether the debt tenor matches the asset life.