Floating-Rate Bonds: How They Work and When to Buy Them
How the Coupon Resets
Every floating-rate bond has two components in its coupon formula:
The reference rate is a short-term benchmark that moves with the broader rate environment. Since the LIBOR transition, most new US floaters reference SOFR (Secured Overnight Financing Rate). The fixed spread (also called the quoted margin) is locked at issuance and compensates you for credit risk — the riskier the issuer, the wider the spread.
Resets happen on a set schedule — monthly, quarterly, or semi-annually. On each reset date, the coupon recalculates using the current reference rate. This means the bond’s price stays close to par because the income stream adjusts to market conditions.
Floating-Rate Bonds vs. Fixed-Rate Bonds
| Feature | Floating-Rate Bonds | Fixed-Rate Bonds |
|---|---|---|
| Coupon | Resets periodically (benchmark + spread) | Locked at issuance |
| Interest Rate Risk | Low — price stays near par | High — prices fall when rates rise |
| Duration | Very short (near zero) | Can be 5–30+ years |
| Income Predictability | Variable — cash flows change each period | Predictable — same payment every period |
| Best Environment | Rising or high interest rates | Falling or stable interest rates |
| Price Volatility | Minimal | Significant for long maturities |
Types of Floating-Rate Bonds
| Type | Issuer | Typical Benchmark | Risk Level |
|---|---|---|---|
| Treasury FRN | US Treasury | 13-week T-bill rate | Virtually risk-free |
| Investment-Grade Corporate Floater | Large corporations | SOFR + 50–150 bps | Low to moderate |
| Bank Loan (Leveraged Loan) | Below-IG companies | SOFR + 200–500 bps | Moderate to high |
| Municipal Floater | State/local governments | SIFMA index | Low (often tax-exempt) |
| Agency Floater | GSEs (Fannie Mae, Freddie Mac) | SOFR + 10–50 bps | Very low |
When Floating-Rate Bonds Make Sense
Floaters shine in specific market conditions. If you expect the Federal Reserve to keep hiking or holding rates high, floaters give you rising income without the price hit that hammers long-duration fixed-rate bonds. They also make sense as a defensive allocation inside a broader asset allocation when yield curve uncertainty is elevated.
On the flip side, when rates are falling, floaters underperform because your coupon resets lower while fixed-rate bondholders lock in the higher rate. In a rate-cutting cycle, long-duration Treasuries and corporate bonds will typically outperform.
Risks to Watch
Credit risk is the main concern — especially with leveraged loans and lower-rated corporate floaters. A wider credit spread at issuance doesn’t protect you if the issuer’s credit deteriorates. Always check credit ratings and fundamentals before buying.
Liquidity risk is another factor. Some floaters (particularly bank loans) trade over-the-counter with limited secondary market activity. You may face wider bid-ask spreads or delays when trying to sell.
Floor and cap provisions can limit your upside. Some floaters have a cap on how high the coupon can go, which defeats the purpose if rates spike aggressively. Read the bond indenture carefully.
How to Invest in Floating-Rate Bonds
You can buy individual Treasury FRNs directly from TreasuryDirect.gov or through a brokerage. For broader exposure, bond ETFs focused on floaters are the simplest route — look for funds tracking floating-rate investment-grade or bank loan indices. If you want to compare options, start with how to pick an ETF and pay close attention to the expense ratio.
Key Takeaways
- Floating-rate bonds adjust their coupon periodically based on a reference rate plus a fixed spread, keeping price near par.
- They carry very low duration risk, making them ideal when interest rates are rising.
- Types range from virtually risk-free Treasury FRNs to higher-yielding bank loans with more credit risk.
- In a falling-rate environment, floaters underperform fixed-rate alternatives — timing matters.
- Use bond ETFs for diversified exposure, or buy Treasury FRNs directly for near-zero credit risk.
Frequently Asked Questions
What is a floating-rate bond?
A floating-rate bond is a debt security whose coupon payment adjusts periodically based on a benchmark interest rate (like SOFR) plus a fixed credit spread. This means your income rises when rates go up and falls when rates decline.
Are floating-rate bonds safe?
It depends on the issuer. Treasury FRNs carry virtually no credit risk. Corporate and bank loan floaters carry more risk depending on the issuer’s credit rating. The floating coupon reduces interest rate risk but doesn’t eliminate credit risk.
How do floating-rate bonds perform when interest rates rise?
They perform well because the coupon resets higher, keeping the bond’s price near par value. This is the opposite of fixed-rate bonds, which lose value as rates climb.
What is the difference between LIBOR and SOFR for floaters?
LIBOR was the legacy benchmark used for floating-rate products until its phase-out in 2023. SOFR (Secured Overnight Financing Rate) is the replacement benchmark for US dollar-denominated floaters. New issuances now reference SOFR.
Can I buy floating-rate bonds in an ETF?
Yes. Several bond ETFs focus specifically on floating-rate securities — from investment-grade floaters to leveraged bank loans. ETFs offer instant diversification and daily liquidity.