Yield to call is the annualised return an investor would earn on a callable bond if the issuer redeems it on its first available call date rather than holding it to final maturity, and it is often lower than the bond’s yield to maturity when the bond trades above par.
Not financial advice. All figures for educational reference only. Data as at July 2026.
Last updated: July 2026.
Key Takeaways
- Yield to call should be calculated whenever a bond is callable and trading at a premium, because the issuer is economically incentivised to call the bond early in that scenario.
- Singapore bank capital instruments such as Additional Tier 1 and subordinated bonds are commonly structured as callable, typically with a call option available after five years from issuance.
- If a bond is not called at the first opportunity, its coupon usually resets to a new rate based on a reference rate such as SORA plus a fixed spread, rather than continuing at the original coupon.
- Investors should compare both yield to call and yield to maturity and focus on the lower, more conservative figure, often called the “yield to worst,” when assessing a callable bond.
- Whether an issuer actually calls a bond depends on prevailing interest rates and refinancing costs at the time, not any guarantee made to the investor upfront.
What Is Yield to Call?
Many bonds, particularly bank capital instruments, are issued with an embedded call option that lets the issuer redeem the bond early, usually at par or a small premium, starting from a specified call date. Yield to call answers the question: what annualised return would I earn if I bought this bond today and the issuer exercised that call at the first opportunity? This differs from yield to maturity, which assumes the bond is held all the way to its final, longer-dated maturity. For a bond trading above par, being called early at par means giving up some of the capital appreciation an investor might otherwise expect, which typically makes yield to call the lower of the two figures.
How Does Yield to Call Work in Singapore?
Singapore bank capital bonds, including Additional Tier 1 (AT1) and subordinated bonds, are a common place retail-adjacent investors encounter callable structures. A representative example is UOB’s NC5 AT1 bond, which carries an initial rate of 5.25%, is callable after 5 years, and resets to the prevailing 5-year SORA-OIS rate plus a 2.393% spread if not called at that point.
| Feature | Illustrative UOB NC5 AT1 Example |
|---|---|
| Initial coupon | 5.25% |
| First call date | 5 years from issuance |
| Reset if not called | Prevailing 5-year SORA-OIS + 2.393% spread |
| Loss absorption feature | Write-down features typical of AT1 instruments |
Source: FSMOne, POEMS and UOB investor relations disclosures on Singapore bank AT1 bond structures, referenced 2026.
Yield to Call Example
Suppose an investor buys a bond at S$103, a 3% premium over its S$100 par value, with a 5% annual coupon and a call date in 2 years. If the issuer calls the bond at par in 2 years, the investor receives S$100 back per bond, losing the S$3 premium paid, which pulls the effective annualised return, the yield to call, below the 5% coupon rate the bond appears to advertise. An investor who only looked at the stated coupon rate, without factoring in the premium paid and the early call, would overestimate their actual likely return.
Advantages of Understanding Yield to Call
- Avoids overpaying based on headline yield. Knowing the yield to call prevents assuming the full stated coupon will be earned over a long holding period.
- Clarifies reinvestment timing. Understanding when a bond might realistically be called helps with planning when capital may need to be reinvested.
- Useful comparison tool. Comparing yield to call across similar callable bank capital bonds helps identify which offers better compensation for the call risk taken on.
Risks and Limitations
- Call risk truncates upside. Bonds bought at a premium can return less than expected if called early.
- Uncertainty over timing. There is no guarantee an issuer will call on the first available date; the decision depends on the issuer’s refinancing economics at that time.
- Extension risk. If a bond is not called, and the reset coupon becomes unattractive relative to market rates, an investor can be left holding a lower-yielding instrument for longer than expected.
- Added complexity. Calculating and interpreting yield to call correctly requires more bond math than a simple coupon-rate comparison.
Yield to Call vs Yield to Maturity
| Aspect | Yield to Call | Yield to Maturity |
|---|---|---|
| Assumes bond held until | First call date | Final maturity date |
| Most relevant when | Bond trades at a premium and is callable | Bond is non-callable, or trading at/below par |
| Typically higher or lower | Often lower for premium-priced callable bonds | Often higher in that same scenario |
The Bottom Line
For any callable bond, especially the Additional Tier 1 and subordinated bonds common in Singapore’s bank capital market, the advertised coupon is not the whole story. Calculating yield to call, and comparing it against yield to maturity, gives Singapore investors a more realistic picture of what return they are likely to actually earn.
Frequently Asked Questions
What is yield to call?
Yield to call is the annualised return an investor would earn on a callable bond if the issuer redeems it on its first available call date rather than holding it to final maturity.
Why is yield to call usually lower than yield to maturity?
When a callable bond trades above par, being called early at par returns less capital gain to the investor than holding to maturity would, which typically pulls the yield to call below the yield to maturity in that scenario.
What happens if a callable bond is not called?
The bond’s coupon typically resets to a new rate based on a reference rate, such as SORA, plus a fixed spread, rather than continuing at the original coupon rate.
Are Singapore Savings Bonds callable?
No. Singapore Savings Bonds are redeemable by the holder on a monthly basis at the holder’s discretion, which is a different mechanic from an issuer exercising a call option.
What is yield to worst?
Yield to worst is the lower, more conservative figure between a callable bond’s yield to call and its yield to maturity, and it is generally the more prudent figure for an investor to focus on.
Why are Singapore bank capital bonds usually callable after 5 years?
Regulatory capital treatment for instruments such as Additional Tier 1 bonds, along with refinancing flexibility for the issuing bank, commonly leads to a call option becoming available around the five-year mark.