What is Sovereign Debt?
In the United States, sovereign debt is issued by the Department of Treasury and the bonds are referred to as Treasuries -- Treasury notes, Treasury bonds, Treasury bills, etc., depending on the length of their issuance.
How Does Sovereign Debt Work?
When the United States needs more money, it has two primary options -- raise taxes or issue debt. Because tax hikes are generally unpopular and require a lengthy ratification process, the Department of Treasury will often choose to issue debt, in the form of selling U.S. Treasury securities.
A Treasury bond is one common example of a Treasury security. When you purchase a Treasury bond, you are essentially offering the government a loan. And like a loan, you get to collect interest -- in this case, every six months -- until the bond matures and the government pays you back the original amount.
Why Does Sovereign Debt Matter?
Government debt can also be used to accelerate or decelerate an economy. In an expansive monetary policy, the central bank hopes to boost spending and lending by injecting more money into the economy. To achieve this, the central will take back debt in exchange for cash. In a contractive policy, the bank hopes to slow economic growth by selling Treasury securities, which takes cash out of circulation.
The perception throughout the world is that debt issued by the U.S. Treasury is virtually free of credit risk, meaning that the world assumes that the U.S. will never default on its debt. That makes U.S. sovereign debt the benchmark against which risky assets are measured.
If a country can issues too much debt and cannot afford to repurchase securities, it has "defaulted." Because nations cannot file bankruptcy when they default, they must present an offer of exchange to debt holders -- it is often not accepted. At that point, officials will generally devalue the national currency to lessen their debt load. This reduces the currency’s purchasing power and often inspires greater exportation, which can help boost GDP. However, currency devaluation means that domestic money is instantly worth less; therefore, citizens cannot afford to buy as much, and both domestic and international confidence in the economy will drop. This was the case with Peru in 1996 Argentina in 2001.
To see our list of nations with the world's highest sovereign debt ratios, read The 11 Nations With Higher Sovereign Debt Ratios Than Greece
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