Floating Rate Bond Singapore: How Your Coupon Resets With SORA Instead of Staying Fixed
A floating rate bond is a bond whose coupon (interest payment) is not fixed for the life of the bond, but instead resets periodically — typically every three or six months — based on a reference benchmark rate, most commonly the Singapore Overnight Rate Average (SORA) in the local market, plus a fixed spread.
Not financial advice. All figures for educational reference only. Data as at July 2026. Last updated: July 2026.
Key Takeaways
- In Singapore, floating rate bonds and capital securities are typically pegged to compounded 3-month or 5-year SORA plus a fixed spread, replacing the older SOR/SIBOR benchmarks fully phased out by end-2024.
- Because the coupon resets periodically, a floating rate bond’s price is generally less sensitive to interest rate changes than a fixed-rate bond of the same maturity — its duration is much shorter, often close to the reset period rather than the full maturity.
- 3-month compounded SORA fell from above 3% at end-2024 to around 1.07–1.18% through the first half of 2026, meaning floating rate bond coupons issued or reset during this period have declined materially.
- Many Singapore bank capital securities (like Additional Tier 1 notes) use a floating structure only after the first call date — paying a fixed rate initially, then switching to a SORA-linked floating rate if not called.
- Floating rate bonds protect holders from losses if interest rates rise (since the coupon rises too), but also mean falling rates directly reduce your income, unlike a fixed-rate bond that locks in today’s higher rate.
What Is Floating Rate Bond Singapore?
Most bonds most Singapore investors encounter — Singapore Savings Bonds, T-bills, and most SGS bonds — pay either a fixed coupon or no coupon at all (T-bills are sold at a discount instead). A floating rate bond is structurally different: instead of locking in a rate at issuance, the coupon is recalculated at each reset date using a published benchmark rate plus a fixed spread agreed at issuance.
This structure matters to Singapore investors because it shifts interest rate risk in a specific way — if you buy a fixed-rate bond and interest rates then rise, the market value of your bond falls, since new bonds are issued paying more. A floating rate bond largely sidesteps this problem because its own coupon rises along with rates at the next reset date, keeping its price much closer to par value throughout its life.
Since Singapore’s transition away from SOR and SIBOR (completed by end-2024) toward SORA as the sole reference rate, virtually all new floating rate instruments issued locally — bank capital securities, corporate floating rate notes, and some structured deposits — now reference compounded SORA.
How Does Floating Rate Bond Singapore Work in Singapore?
A typical Singapore-market floating rate bond or capital security works like this:
- Reference rate: compounded 3-month SORA (for shorter reset periods) or the 5-year SORA-Overnight Indexed Swap (OIS) rate (commonly used for perpetual bank capital securities resetting every 5 years).
- Fixed spread: a margin set at issuance based on the issuer’s credit quality — for example, a bank’s Additional Tier 1 (AT1) capital security might reset at 5-year SORA-OIS plus a spread of roughly 1.8–2.4 percentage points, based on real Singapore bank issuances.
- Reset mechanics: at each reset date, the new coupon is calculated as (current reference rate) + (fixed spread), and that new rate applies until the next reset.
As of mid-2026, 3-month compounded SORA sits around 1.07–1.18% p.a., down sharply from above 3% at end-2024, reflecting MAS’s monetary easing over that period — meaning any floating rate bond that reset recently would be paying a noticeably lower coupon than it did in 2024.
Floating Rate Bond Singapore Example
A Singapore bank issued a perpetual Additional Tier 1 (AT1) capital security with an initial fixed coupon of 5.25% p.a. for the first 5 years, callable at the 5-year mark. If not called in 2026, the coupon resets to the prevailing 5-year SORA-OIS rate plus a spread of 2.393 percentage points (based on a real UOB issuance structure).
- If 5-year SORA-OIS is trading around 2.0% at the reset date, the new floating coupon would be approximately 4.39% p.a. (2.0% + 2.393%) — lower than the original 5.25% fixed coupon.
- This new rate would then apply for the next 5-year period, after which it resets again based on wherever 5-year SORA-OIS stands at that time.
- A Singapore investor holding this note through the reset would see their income step down in this scenario, illustrating the core trade-off of floating rate instruments: protection against rate increases, but reduced income if rates instead fall.
Advantages of Floating Rate Bond Singapore
- Shorter effective duration than a fixed-rate bond of the same maturity, meaning the bond’s market price is less sensitive to overall interest rate movements.
- Income rises automatically if rates rise, protecting purchasing power during periods of rising interest rates or inflation, unlike a fixed coupon that stays locked at the original rate.
- Price stability near par — because the coupon periodically resets to reflect current market rates, floating rate bonds tend to trade closer to their face value than long-dated fixed-rate bonds.
- Useful portfolio diversifier against fixed-rate bond holdings, since the two respond to interest rate changes in different ways.
Risks and Limitations
- Income falls when reference rates fall — as seen with SORA’s decline from above 3% in 2024 to roughly 1.1% in 2026, floating rate bond holders directly experience lower coupon payments in a falling-rate environment.
- Subordinated structures (like AT1 capital securities) carry loss-absorption features — some can be written down or converted to equity if the issuing bank’s capital ratios breach a trigger, a risk explicitly separate from the floating rate mechanism itself.
- Complexity of the reset formula can make it harder for retail investors to project future income compared to a simple fixed-rate bond, especially for structures with irregular reset periods.
- Perpetual or long-dated floating rate securities may not be called at the first opportunity, extending your exposure to the issuer’s credit risk longer than initially expected.
Floating Rate Bond vs Fixed Rate Bond
| Aspect | Floating Rate Bond | Fixed Rate Bond |
|---|---|---|
| Coupon | Resets periodically (e.g. every 3 months or 5 years) based on SORA + spread | Fixed for the entire life of the bond |
| Interest rate sensitivity | Low — price stays close to par near each reset | Higher — price falls if rates rise, rises if rates fall |
| Best environment | Rising or uncertain interest rate periods | Falling or stable interest rate periods (locks in today’s rate) |
| Income predictability | Varies at each reset date | Fully predictable from issuance to maturity |
The Bottom Line
For Singapore fixed income investors, a floating rate bond trades away the certainty of a fixed coupon for protection against rising rates and generally more stable pricing — but as SORA’s fall from above 3% in 2024 to around 1.1% by 2026 shows, that same mechanism means your income drops right along with the benchmark when rates ease.
Frequently Asked Questions
What is a floating rate bond?
It’s a bond whose coupon isn’t fixed for the bond’s life but instead resets periodically — commonly every 3 months or 5 years in Singapore — based on a reference rate like SORA plus a fixed spread agreed at issuance.
What benchmark rate do Singapore floating rate bonds use?
Since the phase-out of SOR and SIBOR by end-2024, virtually all new floating rate bonds and capital securities in Singapore reference compounded SORA (Singapore Overnight Rate Average), either the 3-month compounded rate or the 5-year SORA-OIS rate.
Are floating rate bonds safer than fixed rate bonds?
They carry lower interest rate risk (their price is less sensitive to rate changes), but this doesn’t mean they’re safer overall — credit risk, subordination features, and reinvestment risk on lower future coupons still apply and can matter more than interest rate risk.
Why did floating rate bond coupons fall in 2025-2026?
Because their coupons are tied to SORA, and 3-month compounded SORA declined from above 3% at end-2024 to around 1.07-1.18% through the first half of 2026 as MAS eased monetary policy, floating rate coupons resetting during this period stepped down accordingly.
What's the difference between a floating rate bond and a Singapore Savings Bond?
Singapore Savings Bonds pay a step-up fixed coupon schedule set at issuance and known in advance for all 10 years, while a floating rate bond’s coupon is unknown in advance beyond the current period, since it’s recalculated at each reset date based on prevailing market rates.
Can a floating rate bond's coupon go to zero?
In theory, if the reference rate were to fall enough to offset the fixed spread and go negative, but in practice most floating rate structures include a minimum floor, and SORA has stayed comfortably positive through 2026.