Floating Rate Note (FRN): How SORA-Linked Bonds Work in Singapore

A floating rate note (FRN) is a bond whose coupon payment resets periodically based on a reference interest rate, typically the Singapore Overnight Rate Average (SORA) plus a fixed spread, rather than paying the same fixed coupon for the life of the bond.

Not financial advice. All figures for educational reference only. Data as at July 2026.

Last updated: July 2026

Key Takeaways

• A floating rate note pays a coupon that resets periodically, commonly every one, three or six months, based on a reference rate plus a fixed spread.
• In Singapore, most FRNs today are linked to compounded SORA, the successor benchmark to the retired SIBOR rate, which fully replaced SIBOR after 31 December 2024.
• MAS itself issues 6-month Singapore Government Securities (Infrastructure) FRNs, alongside various bank and corporate SORA-linked FRN issuances in the SGD bond market.
• Because the coupon resets with the reference rate, an FRN\u2019s price is generally far less sensitive to interest rate changes than a fixed-rate bond of similar maturity.
• An FRN differs from a Singapore Savings Bond (SSB), which pays a pre-set, step-up fixed coupon schedule known in full at the time of purchase, rather than a rate that floats with the market.

What Is a Floating Rate Note?

A floating rate note is a type of bond designed to reduce interest rate risk for the holder. Instead of locking in a fixed coupon for the entire life of the bond, as a conventional fixed-rate bond does, an FRN\u2019s coupon is reset at regular intervals to track a reference benchmark rate, plus a fixed spread that reflects the issuer\u2019s credit risk. In Singapore, the relevant benchmark today is the Singapore Overnight Rate Average (SORA), typically used in its compounded form over the relevant coupon period.

The core idea is straightforward: if market interest rates rise, an FRN\u2019s coupon rises along with them at the next reset date, keeping the bond\u2019s price relatively stable near par value. A fixed-rate bond, by contrast, keeps paying its original coupon even as market rates move, causing its market price to fall when rates rise, since new bonds are being issued at more attractive yields. This makes FRNs attractive to investors who are uncertain about the direction of interest rates or specifically want to avoid the price volatility that fixed-rate bonds experience during rate-hiking or rate-cutting cycles.

How Do Floating Rate Notes Work in Singapore?

A typical SGD-denominated FRN coupon is structured as a reference rate plus a spread, for example, “3-Month Compounded SORA + 1.50%”. At each coupon reset date, the applicable SORA rate over the preceding period is used to calculate the next coupon payment, so the amount an investor receives can change from one payment date to the next, unlike a fixed-rate bond.

Source: MAS SORA benchmark data and general SGD bond market conventions, as at July 2026. SORA levels fluctuate with monetary policy and market conditions, so the exact coupon on any FRN will vary over its life.

Floating Rate Note Example

Suppose a Singapore corporation issues a 5-year FRN with a coupon of 3-Month Compounded SORA plus 1.50%, resetting every quarter. If 3-month compounded SORA is 1.10% at the first reset, the coupon for that quarter would be approximately 2.60% annualised. If SORA later rises to 2.00% due to tighter monetary conditions, the coupon for the following quarter would reset upward to approximately 3.50% annualised, without the investor needing to do anything. A holder of a comparable fixed-rate bond issued at the same initial 2.60% coupon would continue receiving only 2.60% even as market rates rose, and would likely see the market price of their bond fall as a result.

Advantages of Floating Rate Notes

• Lower interest rate risk. Because the coupon resets periodically, an FRN\u2019s price tends to stay closer to par value even as market interest rates move, unlike a fixed-rate bond.
• Coupon rises if rates rise. Holders benefit automatically from a rising rate environment, without needing to sell and reinvest into a new bond.
• Useful for short-duration, defensive fixed income allocations. FRNs can complement a bond portfolio for investors who want fixed income exposure without significant price sensitivity to rate changes.
• Transparent, rules-based reset mechanism. Because SORA is a published, transaction-based benchmark administered by MAS, the coupon reset calculation is transparent and verifiable.

Risks and Limitations

• Income falls if rates fall. Just as the coupon rises with SORA, it also falls if SORA declines, meaning income from an FRN is inherently less predictable than a fixed-rate bond.
• Credit risk remains. An FRN still carries the credit risk of its issuer; a floating coupon does not protect against the issuer defaulting or being downgraded.
• Less familiar to retail investors. Compared to Singapore Savings Bonds or T-bills, FRNs are less commonly marketed to individual retail investors and may require a brokerage account with bond market access.
• Reinvestment uncertainty. While price volatility is lower, the actual income an investor will receive over the life of the bond is uncertain and depends entirely on where SORA moves in the future.

Floating Rate Note vs Fixed-Rate Bond vs Singapore Savings Bond

The Bottom Line

A floating rate note offers a way to hold fixed income exposure while sidestepping much of the price volatility that comes with rising or falling interest rates, at the cost of less predictable income than a fixed-rate bond or Singapore Savings Bond. It suits investors who prioritise price stability and are comfortable with coupon income that moves with SORA over the life of the note.

Frequently Asked Questions

Related Terms

• SORA Rate
• Bond Coupon Rate
• T-Bill June 2026 Results
• T-Bill, SSB & Fixed Deposit Comparison Calculator