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Sovereign Bond

Категорія — Державні облігації
By Konstantin Vasilev Member of the Board of Directors of Cbonds, Ph.D. in Economics
Updated October 06, 2023

What is a sovereign bond?

Sovereign bonds are debt securities issued by national authorities to fund government spending initiatives, manage interest payments, or settle previous obligations. Like other bond types, sovereign bonds commit to providing the purchaser with regular interest payments and the full principal amount upon maturity. The credit rating of these bonds is linked to the government’s financial reliability.

Sovereign bonds can be issued in the government’s domestic currency or in foreign currencies. Nevertheless, many developing nations opt for foreign currency-denominated sovereign bonds over those denominated in their local currency due to the elevated risks borne by bondholders, particularly in countries where the stability of domestic currencies is less pronounced.

Sovereign Bond

Understanding the role and purpose of sovereign bonds

Sovereign bonds hold a pivotal role within the global financial market, serving as a fundamental source of funding for governments while affording investors a relatively secure and dependable investment avenue.

Furthermore, these bonds contribute to upholding financial market liquidity and can establish benchmarks for other debt instruments, such as corporate bonds.

Analogous to all bonds, ownership of sovereign debt grants individuals the right to receive regular interest payments from the issuing entity—typically the national government—as well as the eventual reimbursement of the bond’s principal value upon its maturity.

Much like other bond categories, the interest rate, often referred to as the yield, is contingent upon the risk assessment of the issuer. In the case of sovereign bonds, countries perceived as having a greater likelihood of defaulting will offer higher yields. Investors evaluate factors, including a nation’s economic standing, exchange rate dynamics, and political landscape, to gauge the potential of default on sovereign debt commitments.

Credit rating agencies like Standard & Poor’s, Moody’s, and Fitch Ratings furnish sovereign credit ratings, aiding investors in comprehending the associated risks when considering investment in a specific country. These agencies also extend their credit assessment services to corporations and corporate debt instruments.

Types of sovereign bonds

Fixed-rate sovereign bonds

The prevalent form of sovereign bonds is fixed-rate bonds, which furnish a steady interest rate, also termed the coupon rate, throughout the bond’s duration.

Interest disbursements are typically made semi-annually or annually, offering investors a consistent and foreseeable income stream.

Fixed-rate bonds are influenced by alterations in interest rates, potentially leading to fluctuations in their market value.

Inflation-linked sovereign bonds

Inflation-linked sovereign bonds, also referred to as inflation-indexed bonds or real return bonds, are tailored to shield investors against the adverse impacts of inflation.

These bonds’ principal sum and interest payments are modified according to an inflation index, like the Consumer Price Index (CPI).

This arrangement preserves the purchasing power of income generated by inflation-linked bonds over time, acting as a hedge against inflation for investors.

Instances of inflation-linked sovereign bonds encompass the U.S. Treasury Inflation-Protected Securities (TIPS) and the U.K. Index-Linked Gilts.

Zero-coupon sovereign bonds

Diverging from conventional fixed-rate or inflation-linked bonds, zero-coupon sovereign bonds abstain from periodic interest disbursements.

Instead, these bonds are introduced at a discount to their face value, with investors receiving the full face value upon maturity.

The discrepancy between the acquisition cost and the face value constitutes the interest garnered by the investor.

Zero-coupon bonds are notably appealing to investors desiring a prolonged investment without the necessity for recurring income.

Foreign currency-denominated sovereign bonds

Despite most sovereign bonds being designated in the currency of the issuing nation, certain governments offer bonds in foreign currencies.

This variant of sovereign bond facilitates international investor funding and broadens the spectrum of funding sources for a government.

Yet, foreign currency-denominated bonds expose both issuer and investor to currency risk, stemming from fluctuations in exchange rates.

Illustrations of foreign currency-denominated sovereign bonds comprise Eurobonds, Samurai bonds, and Yankee bonds.

Floating-Rate Sovereign Bonds

Floating-rate sovereign bonds boast fluctuating interest rates that adapt periodically, grounded in a benchmark rate like the London Interbank Offered Rate (LIBOR) or a central bank’s policy rate.

Interest remunerations on floating-rate bonds ascend or descend in tandem with shifts in the benchmark rate, imparting a degree of safeguarding against interest rate risk to investors.

Sovereign Bond Issuance Procedure The typical procedure for issuing sovereign bonds encompasses the ensuing stages:

  1. Strategizing: The government delineates the quantity, currency, maturity, and additional conditions pertinent to the bond issuance.

  2. Underwriting: Investment banks or other financial entities collaborate with the government to organize the bond issuance and promote it among prospective investors.

  3. Auction or Transaction: The government dispenses the bonds via an auction or a direct transaction with investors.

  4. Completion: The government secures the funds from the bond transaction, and investors acquire the bonds within their investment portfolios.

Sovereign bond issuance procedure

The typical procedure for issuing sovereign bonds encompasses the ensuing stages:

  1. Strategizing. The government delineates the quantity, currency, maturity, and additional conditions pertinent to the bond issuance.

  2. Underwriting. Investment banks or other financial entities collaborate with the government to organize and promote bond issuance among prospective investors.

  3. Auction or Transaction. The government dispenses the bonds via an auction or a direct transaction with investors.

  4. Completion. The government secures the funds from the bond transaction, and investors acquire the bonds within their investment portfolios.

Benefits and risks associated with sovereign bonds


  1. Security and Consistency. Sovereign bonds are commonly perceived as investments with minimal risk due to the complete assurance of the issuing government’s financial backing.

  2. Portfolio Diversification. Incorporating sovereign bonds into an investment portfolio can effectively spread risk and amplify overall returns.

  3. Income Yield. Sovereign bonds usually yield periodic interest payments, ensuring a stable income source for investors.


  1. Currency Risk. Currency risk emerges when the bondholder’s base currency surpasses the denomination currency of the sovereign bond due to currency devaluation. The primary source of currency risk is fluctuations in exchange rates. Sovereign bonds offered in foreign currencies marked by historical volatility might not present an attractive proposition for investors, even in instances where the debt instrument offers a substantial interest rate.

  2. Credit Risk. Credit risk materializes if a government elects to default on sovereign bonds denominated in its own currency. A government bond issued in the domestic currency is commonly regarded as risk-free because the government holds the option to generate additional currency as needed.

  3. Interest Rate Risk. Similar to other debt vehicles, sovereign bonds are exposed to interest rate risk. The trajectory of interest rates and bond prices operates in an inverse relationship—when interest rates decrease, bond prices tend to rise, and vice versa.

  4. Inflation Risk. Inflation risk arises from the gradual erosion of value associated with a sovereign bond. While investors usually anticipate a certain level of inflation, the emergence of higher-than-expected inflation introduces inflation risk.

Sovereign bond markets

The primary markets for sovereign bonds encompass the United States, the European Union, Japan, and China.

These markets are marked by substantial trading volumes and robust liquidity, rendering them appealing to investors in search of security and steadiness.

Following their initial issuance, sovereign bonds are subject to trading in secondary markets. These platforms enable investors to purchase and vend bonds before they mature, granting adaptability and liquidity. The liquidity of a sovereign bond market pertains to the ease with which investors can buy and sell bonds. Higher liquidity is generally linked to reduced transaction expenses and more stable prices.

Popular trading platforms

  • Over-the-counter (OTC) Trading. Most sovereign bonds are exchanged through OTC trading, where transactions occur directly between buyers and sellers, often facilitated by brokers or dealers.

  • Electronic Trading Platforms. A subset of sovereign bonds is traded on electronic platforms, enhancing transparency and efficiency in the process.

Market indicators supply insights into the sovereign bond market’s performance and health. Several common indicators are as follows:

  • Yield Curves. Yield curves depict the interest rates of bonds with varying maturities, offering a snapshot of the market’s anticipations for future interest rates and economic expansion.

  • Bond Spreads. Bond spreads quantify the yield disparity between two bonds, often comparing a sovereign bond to a benchmark bond. Broader spreads signify an augmented perceived risk for the concerned bond.

  • Credit Default Swaps. Credit default swaps (CDS) are financial instruments that extend insurance against the prospect of bond default. Elevated CDS prices indicate an escalated perceived default risk.

Investing in sovereign bonds

Engaging in U.S. sovereign bond investments is relatively straightforward and can be executed through TreasuryDirect.gov. However, acquiring foreign bonds introduces a bit more complexity, typically involving a broker and a specialized foreign trading account. Typically, the broker procures the bond at the ongoing market rate. This approach might have limitations based on bond availability, and transaction expenses could be notable.

A more streamlined option is to invest in U.S. mutual funds or exchange-traded funds (ETFs) that encompass foreign sovereign bonds. These funds offer a dual benefit of simplicity and diversification, presenting exposure to an array of foreign bond offerings that can help mitigate investment risks.

Prominent foreign sovereign bond ETFs encompass:

  • iShares International Treasury Bond ETF (IGOV)

  • SPDR Bloomberg International Treasury Bond ETF (BWX)

  • SPDR Bloomberg Capital Short Term International Treasury Bond ETF (BWZ)

  • Franklin Liberty International Aggregate Bond ETF (FLIA)

Sovereign bond ratings

Standard & Poor’s, Moody’s, and Fitch stand as the three most renowned evaluators of sovereign bond ratings. While various boutique agencies exist, the influence of these "big three" rating agencies predominates among worldwide investors. The upgrades and downgrades endorsed by these agencies can trigger substantial fluctuations in sovereign bond yields over extended periods.

Sovereign bond ratings are determined by multiple considerations, including:

  1. Per Capita Income

  2. Gross Domestic Product Growth

  3. Inflation Trends

  4. External Debt Levels

  5. Historical Record of Defaults

  6. Economic Advancement

Sovereign bond defaults

While not frequent, instances of sovereign bond defaults have occurred multiple times in history. One notable recent case transpired in 2001, involving Argentina, which faced an inability to honor its debt obligations following a recession in the late 1990s. Due to the Argentine peso being pegged to the U.S. dollar, the government lacked the option to mitigate its challenges through inflation, culminating in a default.

Two additional well-known instances took place in Russia and North Korea. Russia experienced a sovereign bond default in 1998, which startled the global community that had presumed major world powers would evade such defaults. Similarly, in 1987, North Korea defaulted on its debt obligations due to mismanaging its industrial sector and overspending on military expansion.

Global institutions like the International Monetary Fund (IMF) and the World Bank frequently assume a pivotal role in managing sovereign debt crises by extending financial aid, offering policy recommendations, and furnishing technical assistance.

Resolving sovereign debt crises can entail strategies like debt restructuring, financial rescues, and the execution of economic overhauls.

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