In this blog post, we’ll explore what government bond CDS premiums signify and why they are used as a key indicator of a country’s economic stability.
The CDS premium on bonds issued by national governments in foreign markets is one of the economic indicators we frequently encounter in the media. To understand this indicator, it is necessary to examine the concepts of a bond’s “credit risk” and “credit default swaps (CDS).”
Bonds are issued by governments or corporations to raise funds, and their prices are determined in the bond market where they are traded. The issuer of a bond promises to pay a fixed amount of interest and the principal to investors on a specified date. Investors who purchase bonds earn returns by reselling them or receiving interest payments. However, bond investment carries credit risk—the possibility that interest and principal may not be paid due to the issuer’s inability to pay or other reasons. Accordingly, countries have introduced credit rating systems to assess the credit risk of bonds and disclose it as credit ratings, thereby protecting investors.
For example, under South Korea’s credit rating system, bonds denominated in Korean won that promise payment of interest and principal are assigned the highest credit rating, AAA, if the issuer’s ability to pay is top-tier. Bonds that have defaulted—failing to pay principal or interest—are assigned the lowest credit rating, D. Other bonds are evaluated within progressively lower rating categories—such as AA, A, BBB, and BB—in order of increasing credit risk. Within each of these rating categories, the categories may be further subdivided into three credit rating levels based on the relative magnitude of credit risk, often indicated by adding a “–” or “+” to the rating. A bond’s credit rating may be adjusted in response to changes in credit risk. If credit risk increases while other conditions remain constant, the price of that bond falls in the bond market.
Trading in the bond market is not solely aimed at generating interest income. Investors utilize bonds as part of their asset allocation strategies to enhance the stability of their portfolios. Bond price fluctuations are influenced by various factors, including market interest rates, economic indicators, and changes in credit ratings. In particular, when a bond’s credit rating declines, its yield tends to rise while its price falls. This is because investors demand higher returns since they must assume greater risk.
A CDS is a derivative financial instrument used by bond investors to hedge against credit risk. CDS transactions take place between a “protection buyer” and a “protection seller.” Here, “protection” refers to safeguarding against credit risk. The credit protection seller is responsible for compensating the credit protection buyer for any losses incurred if the bonds held by the buyer default. Through a CDS transaction, the credit risk associated with the bonds is transferred from the credit protection buyer to the credit protection seller. The asset for which credit risk is transferred in a CDS transaction is referred to as the “underlying asset.” For example, Bank A may purchase bonds issued by Company B and enter into a CDS contract with Insurance Company C to hedge against the credit risk of those bonds. In this case, the underlying asset is the bond issued by Company B.
The credit default seller receives a type of premium from the credit default buyer as compensation for assuming the credit risk of the underlying asset; the rate of this premium is the CDS premium. The CDS premium is influenced by various factors, such as the credit risk of the underlying asset and the creditworthiness of the protection seller. All other factors being equal, a higher credit risk of the underlying asset results in a higher CDS premium. Meanwhile, the higher the creditworthiness of the protection seller, the more confident the protection buyer is that losses will be covered in the event of a default, and thus the protection buyer tends to be willing to pay a higher CDS premium. If the protection seller has issued bonds, its credit rating can be used to assess its ability to pay. Accordingly, all other factors being equal, the higher the credit rating of the bonds issued by the protection seller, the higher the CDS premium.
The CDS premium on government bonds is an important indicator reflecting the credit risk of the economy as a whole, allowing investors to assess the economic stability of the country in question.
A rise in the CDS premium indicates an increase in the country’s credit risk, while a decline suggests a decrease in credit risk. For this reason, the CDS premium serves as an important reference indicator for financial market participants.
Finally, the bond market and the CDS market are interrelated, so fluctuations in one market can affect the other. For example, if a country’s economic conditions deteriorate and bond prices fall, the country’s CDS premium may rise. This is because investors purchase more CDS contracts to hedge against the credit risk associated with the bonds. Conversely, if economic conditions improve, bond prices may rise and the CDS premium may fall. This interaction plays a crucial role in helping investors comprehensively analyze market conditions and make investment decisions.
