Sovereign Debt, Why It's Important, and Rankings

Why Sovereign Debt Is a Good Thing -- Up to a Point

Sovereign debt can create riots.
••• Photo by Milos Bicanski /Getty Images

Sovereign debt is how much a country's government owes.

It means the same thing as national debt, country debt, or government debt because the word "sovereign" also means national government. It often refers to how much the country owes to outside creditors. This is why it is frequently used interchangeably with public debt.

Sovereign debt is an accumulation of a government's annual deficits. Therefore, it shows how much more a government spends than it receives in revenue over time.

Governments usually finance their debt through bonds, such as U.S. Treasury notes. These bonds have terms from three months to 30 years. The government pays interest rates to give bond buyers a return on their investment. The more likely it is that the bond will be repaid, the lower the interest rate paid. In turn, this lowers the cost of the sovereign debt. Governments can also take on loans directly from banks, private businesses or individuals, or also other countries.

How It's Measured

When comparing sovereign debt between countries, you've got to be very careful what is actually included. That's because sovereign debt is measured differently according to who is doing the measuring and why. For example, Standard & Poor's is a debt rating agency for businesses and investors. Therefore, it only measures debt owed to commercial creditors. It doesn't measure what a government owes to other governments, the International Monetary Fund, or the World Bank. It also only measures national debt, not what is owed by states or municipalities within a country.

However, S&P does take into account the potential effects these obligations have on the country's ability to honor its sovereign debt.

The European Union has restrictions on how much total debt a country is allowed to have to stay in the euro zone. Therefore, its measurements are broader. It includes state and local government debt, as well as future obligations owed to social security.

The U.S. debt separates public debt from intragovernmental debt, which is debt owed by the Federal government to itself. It does not include debt incurred by municipalities, states, and other non-national government bodies. That's because most states and cities aren't allowed to incur deficits.

Why Expanding It Boosts Growth

Whether a government spends on social security, health care, or new fighter jets, it's pumping money into the economy. That boosts economic growth because businesses expand to meet the demand created by the spending. That usually results in new jobs, which has a multiplier effect in stimulating further demand and growth. Deficit spending is a powerful stimulant because the demand is being created now. The cost won't come due until sometime in the future.

As long as the sovereign debt remains within a reasonable level, creditors feel safe that this expanded growth means they will be repaid with interest. Government leaders keep spending because a growing economy means happy voters who will re-elect them. Basically, there is no reason for them to cut spending.

When Sovereign Debt Goes Wrong

All goes well until creditors start to doubt whether they will be repaid. These doubts start to creep in when sovereign debt reaches 77 percent of the country's annual economic output. For emerging market countries, the tipping point comes sooner, at the 64 percent debt-to-GDP ratio.

Creditors first start to worry whether the country will default on the interest payments. This becomes a self-fulfilling prophecy because, as fears rise, so does the amount of interest a country must promise to pay to float new bonds. Countries must borrow at ever-more expensive rates to pay off the older, cheaper debt. If this cycle continues, the nation may be forced to default on its debt altogether.


Debt crises have occurred for centuries, usually as a result of wars or recessions. In the 1980s, a wave of defaults occurred in East Europe, Africa, and Latin America. This was a result of a boom in bank lending in the 1970s. When the 1981 recession hit, interest rates rose, triggering defaults in the emerging market countries.

In the 1998 debt crisisRussia defaulted after plummeting oil prices decimated its revenue. Russia's default led to a wave of defaults in other emerging market countries. However, the IMF prevented many debt defaults by providing needed capital.

2017 Rankings 

The Good - Here are nine countries with debt less than 10 percent of their annual economic output or GDP. Some countries, like Brunei, have plenty of revenue to pay for government services. This revenue comes mostly from natural resources. They have a healthy GDP growth rate, so they don't need to boost economic growth through deficit spending. Others, like Wallis and Futuna, still have traditional economies that rely on farming.

  1. 0.0% -- Macau
  2. 0.0% -- Timor-Leste
  3. 3.1% -- Brunei
  4. 5.6% -- Wallis and Futuna
  5. 6.5% -- New Caledonia
  6. 7.5% -- Gibraltar
  7. 8.3% -- Afghanistan
  8. 9.0% -- Solomon Islands
  9. 9.0% -- Estonia

The Bad - Here are 15 countries with public debt greater than their entire annual economic output. This means more than 100 percent of GDP. Most of them are in danger of default. Japan and Singapore are the exceptions. Japan owes most of its debt to its citizens, who buy government bonds as a form of personal savings. Most of Singapore's debt is held by its social security trust fund. In fact, Singapore hasn't borrowed to finance deficit spending since the 1980s.

  1. 224% -- Japan
  2. 180% -- Greece
  3. 142% -- Lebanon
  4. 131% -- Italy
  5. 128% -- Portugal
  6. 127% -- Cabo Verde
  7. 119% -- Mozambique
  8. 118% -- Jamaica
  9. 116% -- The Gambia
  10. 115% -- Singapore
  11. 114% -- Eritrea
  12. 108% -- Barbados
  13. 105% -- Cyprus 
  14. 104% -- Egypt
  15. 104% -- Belgium

The Just Plain Ugly - These countries don't have the worst debt-to-GDP ratios, but it's causing problems for their economies. The United States has a public debt-to-GDP ratio of 77 percent. That doesn’t seem so bad, but the total amount owed is $18 trillion. This amount is larger than what any other single country owes. Also, this only includes the public debt, not the debt the U.S. government owes to itself. If the United States defaulted on its debt, it would bring the global economy to its knees.

Therefore, a monster debt that has any risk of default is uglier than a smaller debt with a higher likelihood of default.

Most countries in the European Union exceeded the self-imposed threshold debt limit. Investors have been worried about the default in Greece, one of the worst indebted countries in the world, as well as the other "PIGS": Portugal, Ireland, Italy, and Spain. 

However, the debt-to-GDP ratios of the European countries that are bailing out the "PIGS" are also high. Germany's is 66 percent and France's is 96 percent. European banks are large holders of this debt, which could export a European default to the global financial system.