South Korea's Financial Supervisory Service issued an investor advisory warning that government bonds and other low-risk-rated bonds can incur losses if sold before maturity, urging caution with long-term bond investments. The regulator highlighted that 30-year maturity bonds could face approximately 17% valuation losses if market interest rates rise by 1 percentage point. The advisory follows steady complaints from investors who experienced losses after purchasing low-risk bonds based on sales staff recommendations.
FSS Warns 30-Year Bonds Face 17% Loss Risk on 1%p Rate Rise
The FSS stated that government bonds and other low-risk-rated bonds are classified as safe investment products, but investors can incur losses due to price declines. While government bonds are typically classified as low-risk products in financial investment risk rating systems due to low credit risk from issuer bankruptcy, prices can fall if sold before maturity when market interest rates rise. Long-term bonds are particularly sensitive to interest rate changes. The regulator provided an example of a 30-year maturity bond with a face value of 10,000 won and face value/purchase rate of 3%, explaining that a 100bp rise in market rates could result in approximately 17% losses.
Elderly Investors Cautioned on Long-Term Bond Suitability
Elderly retirees and other investors for whom principal preservation is critical must exercise caution with long-term bond investments. The FSS cited a case where an investor in their 70s filed a complaint claiming that a sales staff member's recommendation to purchase 30-year government bonds was unsuitable given the investor's age. The regulator emphasized that bonds with long remaining maturities can result in unexpected losses if sold mid-term, and investors without sufficient fixed income or who may need urgent funds for medical or nursing care expenses must consider the possibility of mid-term sales.
Base Rate Cuts Do Not Guarantee Bond Price Gains
The FSS stressed that base rate cuts do not directly translate to bond price increases. Bond prices are determined by market interest rates rather than base rates, so bond prices can fall even when base rates decline if market rates rise. According to the regulator, South Korea's base rate fell from 2.75% at the end of the first quarter of 2025 to 2.50% at the end of the second quarter, but 30-year treasury bond yields rose to the 2.80-2.95% range in the third quarter and the 3.10-3.20% range in the fourth quarter.
OTC Bond Trading Requires Fair Value and Yield Spread Checks
When trading over-the-counter bonds, investors must verify the difference between fair value rates and actual trading yields. Securities firms may offer purchase rates lower than fair value rates when selling OTC bonds, factoring in personnel costs, IT expenses, and other costs. In such cases, investors purchase bonds at prices higher than fair value-based valuations, which can appear as initial valuation losses. The FSS stated that investors must consider the difference between fair value rates and trading yields when making OTC bond investment decisions, and must check whether bonds with identical or similar conditions are traded on exchanges. Exchange-traded bonds can be verified through financial firms' home trading systems, mobile trading systems, or the Korea Exchange KRX information data system, though exchange trading may be difficult if bid-ask formation is not smooth. The regulator plans to continue providing guidance on financial investment product dispute cases and investor precautions, and to strengthen investor protection through institutional improvements when necessary.
FAQ
Why can government bonds incur losses despite low risk ratings?
Government bonds are classified as low-risk due to minimal credit risk from issuer bankruptcy, but if sold before maturity, prices can decline when market interest rates rise, resulting in losses for investors.
How much can 30-year bond investors lose if market rates rise?
According to the FSS example, a 30-year maturity bond with a face value of 10,000 won and 3% face value/purchase rate could incur approximately 17% losses if market interest rates rise by 1 percentage point.
