Singapore Bond Duration Risk

Singapore Bond Duration Risk — see definition below. This article is for informational purposes only and does not constitute financial advice.

Table of Contents
  1. How Duration Measures Interest Rate Sensitivity
  2. Duration Risk in Singapore Savings Bonds (SSBs)
  3. Managing Duration Risk in a Singapore Bond Portfolio
  4. Duration Risk for Corporate Bond Investors in Singapore

How Duration Measures Interest Rate Sensitivity

Duration is expressed in years and measures how long you wait to receive a bond cash flows (coupons and principal). The longer the duration, the more sensitive the bond price is to interest rate changes. Modified duration: if a bond has modified duration of 6, a 1% rise in yields causes its price to fall approximately 6%. In 2022-2023, when the US Federal Reserve raised rates aggressively, long-duration bond ETFs such as LSBU (iShares Core SGD Government Bond ETF) saw significant mark-to-market losses even though the bonds carried no credit risk.

Duration Risk in Singapore Savings Bonds (SSBs)

SSBs have a unique feature: they can be redeemed early (following month) at face value with no penalty and no loss of principal. This makes SSBs effectively zero duration risk for investors who may need to exit before maturity. The step-up interest structure rewards long-term holders. As at mid-2026, SSB interest rates remain attractive versus bank fixed deposits for risk-averse investors, though off the 2023 peaks of ~3.47% p.a. (10-year average).

Managing Duration Risk in a Singapore Bond Portfolio

Key strategies: Bond laddering — buy bonds with staggered maturities (1, 3, 5, 7, 10 years) so some bonds mature every few years. Short-duration tilt — in a rising rate environment, tilt towards T-bills and 1-3 year SGS; extend duration when rates fall to lock in higher yields. Floating-rate instruments — SORA-linked bonds have near-zero duration risk as coupons reset with market rates. SSBs as a duration-free anchor — for retail investors, SSBs eliminate duration risk while offering competitive yields.

Duration Risk for Corporate Bond Investors in Singapore

SGD corporate bonds are typically sold in minimum denominations of S$250,000 to institutional investors, though some are available in smaller lots on DBS Bond Exchange or Phillip Bond Exchange. For retail investors, corporate bond exposure is best accessed via bond ETFs (e.g. A35) or unit trusts on FSMOne. Corporate bonds carry both duration risk (interest rate sensitivity) and credit risk (default risk), requiring more due diligence than SGS bonds.

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Frequently Asked Questions: Singapore Bond Duration Risk

What is bond duration risk in simple terms?
Duration risk is the risk that a bond price will fall when interest rates rise. A bond with 5-year duration loses roughly 5% of its value for every 1% increase in market interest rates. Longer-duration bonds are more sensitive to rate changes.
Do Singapore Savings Bonds (SSBs) have duration risk?
No. SSBs can be redeemed early at face value (no capital loss), making them effectively zero duration risk. This is one of their key advantages over SGS bonds or corporate bonds.
How does duration risk affect Singapore REITs?
REITs are not bonds, but they are compared to bonds for yield. Rising interest rates increase REIT borrowing costs and make bond yields more competitive relative to REIT distributions, typically putting downward pressure on REIT unit prices.
What is a good way to reduce duration risk in my bond portfolio?
Bond laddering, tilting towards shorter-duration instruments (T-bills, 1-3 year SGS), and using SSBs as a duration-free anchor are the most practical strategies for Singapore retail investors.
How do I find the duration of a Singapore bond ETF?
Check the ETF factsheet. Providers (iShares, Nikko AM, Lion Global) publish the fund weighted average duration. A35 (ABF Singapore Bond Index Fund) typically has a duration of around 5-7 years.