Government bond Information
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A government bond or sovereign bond is a bond issued by a national government, generally with a promise to pay periodic interest payments called coupon payments and to repay the face value on the maturity date. The aim of a government bond is to support government spending. Government bonds are usually denominated in the country's own currency, in which case the government cannot be forced to default, although it may choose to do so. If a government is close to default on its debt the media often refer to this as a sovereign debt crisis.   
The terms on which a government can sell bonds depend on how creditworthy the market considers it to be. International credit rating agencies will provide ratings for the bonds, but market participants will make up their own minds about this.
For example, a bondholder invests $20,000 (called face value) into a 10-year government bond with a 10% annual coupon; the government would pay the bondholder 10% of the $20,000 each year. At the maturity date the government would give back the original $20,000.
The first general government bonds were issued in the Netherlands in 1517. Because the Netherlands did not exist at that time, the bonds issued by the city of Amsterdam are considered their predecessor which later merged into Netherlands government bonds. The average interest rate at that time fluctuated around 20%.
The first official government bond issued by a national government was issued by the Bank of England in 1694 to raise money to fund a war against France. The form of these bonds was both lottery and annuity. The Bank of England and government bonds were introduced in England by William III of England (also called William of Orange), who financed England's war efforts by copying the approach of issuing bonds and raising government debt from the Seven Dutch Provinces, where he ruled as a Stadtholder.
Later, governments in Europe started following the trend and issuing perpetual bonds (bonds with no maturity date) to fund wars and other government spending. The use of perpetual bonds ceased in the 20th century, and currently governments issue bonds of limited term to maturity.
During the American Revolution, the U.S. government started to issue bonds in order to raise money, these bonds were called loan certificates. The total amount generated by bonds was $27 million and helped finance the war. 
A government bond in a country's own currency is strictly speaking a risk-free bond, because the government can if necessary create additional currency in order to redeem the bond at maturity. There have however been instances where a government has chosen to default on its domestic currency debt rather than create additional currency, such as Russia in 1998 (the "ruble crisis") (see national bankruptcy). Investors may used rating agencies to assess credit risk. The Securities and Exchange Commission (SEC) has designated 10 rating agencies as Nationally recognized statistical rating organization.
Currency risk is the risk that the value of the currency a bond pays out will decline compared to the holder's reference currency. For example, a German investor would consider United States bonds to have more currency risk than German bonds (since the dollar may go down relative to the euro); similarly, a United States investor would consider German bonds to have more currency risk than United States bonds (since the euro may go down relative to the dollar). A bond paying in a currency that does not have a history of keeping its value may not be a good deal even if a high interest rate is offered.  The currency risk is determinated by the fluctuation of exchange rates.
Inflation risk is the risk that the value of the currency a bond pays out will decline over time. Investors expect some amount of inflation, so the risk is that the inflation rate will be higher than expected. Many governments issue inflation-indexed bonds, which protect investors against inflation risk by linking both interest payments and maturity payments to a consumer price index. In the UK these bonds are called Index-linked bonds.
Also referred to as market risk, all bonds are subject to interest rate risk. Interest rate changes can affect the value of a bond. If the interest rates fall, then the bond prices rise and if the interest rates rise, bond prices fall. When interest rates rise, bonds are more attractive because investors can earn higher coupon rate, thereby holding period risk may occur. Interest rate and bond price have negative correlation. Lower fixed-rate bond coupon rates meaning higher interest rate risk and higher fixed-rate bond coupon rates meaning lower interest rate risk. Maturity of a bond also has an impact on the interest rate risk. Indeed, longer maturity meaning higher interest rate risk and shorter maturity meaning lower interest rate risk.
If a central bank purchases a government security, such as a bond or treasury bill, it increases the money supply because a Central Bank injects liquidity into the economy. On the contrary, when a Central Bank is fighting against inflation then a Central Bank decreases the money supply. By injecting cash into the economy, a Central Bank lowers government bonds yield. These actions of increasing or decreasing the amount of money in the banking system are called monetary policy.
In the UK, government bonds are called gilts. Older issues have names such as "Treasury Stock" and newer issues are called "Treasury Gilt".   Inflation-indexed gilts are called Index-linked gilts.,  which means the value of the gilt rises with inflation. They are fixed-interest securities issued by the British government in order to raise money.
UK gilts have maturities stretching much further into the future than other European government bonds, which has influenced the development of pension and life insurance markets in the respective countries.
A conventional UK gilt might look like this – "Treasury stock 3% 2020".  On the 27 of April 2019 the United Kingdom 10Y Government Bond had a 1.145% yield. Central Bank Rate is 0.75% and the United Kingdom rating is AA, according to Standard & Poor's. 
The U.S.Treasury offered severals types of bonds with various maturities. Certain bonds may pay interest, others not. These bonds could be: 
- Savings Bonds : they are considered one of the safest investments.
- Treasury Note (T-Notes) : maturity of these bonds is two, three, five or 10 years, they provided fixed coupon payments every six months and have face value of $1,000.
- Treasury Bonds (T-Bonds or long bond) : are the treasury bonds with the longest maturity, from twenty years to thirty years. They also have a coupon payment every six months.
- Treasury Inflation-Protected Securities (TIPS) : are the inflation-indexed bond issued by the U.S. Treasury. Which means that the principal of the bond is adjusted to the consumer price index. In other words, the principal increases with inflation and decreases with deflation.
The principal argument for investors to holding U.S. Government Bonds is that the bonds are exempt from state and local taxes.
The bonds are sold through an auction system by the government. The bonds are buying and selling on the secondary market, the financial market in which financial instruments such as stock, bond, option and futures are traded. The secondary market may be separate into two market categories over-the-counter market and exchange market.
The Treasury Direct is the official website where investors can purchase treasury securities directly from the U.S. government. This online system allow investors to save money on commissions and fees taken with traditional channels. Investors can use banks or brokers to hold a bond.
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- List of government bonds
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- Bond market
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- Secondary market
- "Sovereign Bond Definition". investopedia.com. 2011. Retrieved 15 December 2011.
- "What is Sovereign Debt".
- "Portugal sovereign debt crisis".
- "Brief history of bond investing".
- "Analysis: Counting the cost of currency risk in emerging bond markets". 22 November 2013 – via Reuters.
- "UK Debt Management Office".
- "Gilt Market: About gilts". UK Debt Management Office. Archived from the original on 2016-11-10. Retrieved 2011-06-13.
- "Gilt Market: Index-linked gilts". UK Debt Management Office. Retrieved 2011-06-13.
- "Gilts and corporate bonds explained".
- "World government bonds UK".
- "Example of U.S.Government Bonds".