FIXED INCOME · Singapore Investing Glossary

Yield to Maturity Singapore

Yield to Maturity (YTM) is the total annualised return an investor earns if they hold a bond until it matures, assuming all coupon payments are reinvested at the same rate. In Singapore, YTM is widely used to compare SGS bonds, T-bills, and corporate bonds on an equal footing — regardless of their coupon rates or prices.

This article is for informational purposes only and does not constitute financial advice. Always consult a licensed financial adviser before making investment decisions.

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What Is Yield to Maturity (YTM)?

Yield to Maturity (YTM) is the most comprehensive measure of a bond’s return. Unlike the simple coupon rate, which only shows the annual interest payment relative to face value, YTM accounts for three components: coupon payments received, any capital gain or loss (if the bond was bought above or below par), and the time value of money.

Think of YTM as the bond’s internal rate of return (IRR). If you buy a 10-year Singapore Government Securities (SGS) bond at a 3% coupon and it is trading at a discount, your actual annualised return — the YTM — will be higher than 3%. Conversely, if you pay a premium, the YTM will be lower.

In Singapore, MAS publishes daily indicative SGS yields on its website, which reflect market consensus YTMs for different maturities — from 3-month T-bills to 30-year SGS bonds.

How YTM Is Calculated

YTM is the discount rate (r) that makes the present value of all future cash flows (coupons + face value at maturity) equal to the bond’s current market price. The formula is:

Price = Σ [Coupon / (1+r)^t] + [Face Value / (1+r)^n]

Because YTM cannot be solved algebraically, it is computed iteratively (trial and error or financial calculators). Most Singapore brokerages — including DBS Vickers and OCBC Securities — display the YTM alongside each bond’s price in their bond screeners.

Example (as at Q1 2026): A 5-year SGS bond with a 3.5% coupon is trading at S$98 (below par of S$100). The YTM would be slightly above 3.5% because you also gain S$2 in capital appreciation by maturity. A quick approximation: YTM ≈ (35 + (100–98)/5) / ((98+100)/2) ≈ 3.9%.

YTM vs Coupon Rate vs Current Yield

These three measures often cause confusion for new bond investors in Singapore:

For Singapore retail investors comparing T-bills, SGS bonds, and Singapore Savings Bonds (SSBs), YTM is the gold standard — it lets you compare apples to apples across different maturities and coupon structures.

YTM and Singapore Bond Types

Different Singapore fixed income instruments express yield differently:

• SGS Bonds: Semi-annual coupons. YTM is quoted as a bond-equivalent yield (BEY) — annualised on a semi-annual compounding basis. MAS publishes daily SGS yield curves.
• T-bills (6-month and 1-year): Zero-coupon instruments sold at discount. Yield is quoted as an annualised discount yield or money-market yield. For Q1 2026, 6-month T-bill cut-off yields hovered around 3.3–3.5%.
• Singapore Savings Bonds (SSB): Step-up interest structure. MAS publishes the 10-year average return, which approximates the YTM if held to full 10 years.
• Corporate Bonds (SGX-listed): YTMs vary by credit rating. Investment-grade SGD corporate bonds typically offered YTMs of 3.5–5.5% in Q1 2026, depending on issuer and maturity.

Why YTM Matters for Singapore Retail Investors

YTM gives you a meaningful benchmark to answer: “Is this bond worth buying at this price?” In a rising interest rate environment (as Singapore experienced from 2022–2024 when MAS tightened monetary policy), bond prices fell and YTMs rose — making bonds more attractive for new buyers. When rates stabilised in 2025, YTMs compressed as prices recovered.

For CPF investors using CPFIS-OA to buy SGS bonds, the YTM determines whether the bond beats the CPF OA’s 2.5% floor rate. If the SGS YTM is 3.5%, it exceeds CPF OA — creating a case for deployment.

See our Bond Duration Singapore guide for understanding interest rate risk alongside YTM, and our Bond Yield Singapore overview for broader context.

Key Limitations of YTM

YTM is a powerful tool but has real limitations Singapore investors should understand:

• Reinvestment risk: YTM assumes all coupons are reinvested at the same YTM rate. In practice, rates change — so realised returns may differ.
• Call risk: For callable bonds, the YTM may overstate returns if the issuer redeems early. Use Yield to Call (YTC) instead.
• Credit risk not captured: A higher YTM on a corporate bond often reflects higher default risk — not a free lunch. Always check the credit rating.
• Liquidity premium: Some SGX-listed bonds have thin trading volumes. The quoted YTM may not reflect the actual price you can transact at.

Frequently Asked Questions

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