Countries can, and periodically do, default on their debt. This happens when the government is either unable or unwilling to make good on its fiscal promises. Argentina, Russia and Pakistan are just a few of the governments that have defaulted over the past two decades.
Of course, not all defaults are the same. In some cases, the government actually misses an interest or principal payment. Other times, it simply delays a disbursement. The government can also exchange the original notes for new ones with less favorable terms. Here, the holder either accepts lower returns or takes a “haircut” on the loan – that is, accepts a bond with a much smaller par value.
Table 1: Partial list of countries that have defaulted since 1999
|Total Defaulted Debt ($ millions)|
|Greece||2015||1.6 billion euros |
Source: Moody’s Global Credit Policy 
Factors Affecting Risk
Historically, failure to make good on loans is a bigger problem for countries that borrow in a foreign currency. The reason is that when a country that borrow foreign currency faces a budgetary shortfall, it does not have the option to simply print more money.
Many developing countries issue bonds in an alternate currency – often the U.S. dollar – and wealth and the ability to borrow plays such a significant role in default risk. Once a country has defaulted once, it become even harder to borrow in the future, so low-income countries are particularly at risk of default. According to Masood Ahmed, a previous senior executive at the IMF and now president of the Center for Global Development, as of April 2018, of the 59 of the countries that the IMF classifies as low-income developing countries, 24 were in a debt crisis or at the edge of one, which is almost 40% and double the number in 2013 .
The nature of a country’s government also plays a major role in credit risk. Research suggests that the presence of checks and balances leads to fiscal policies that maximize social welfare – and honoring debt carried by domestic as well as foreign investors is a component of maximizing social welfare. Conversely, governments that are composed of certain political groups with a disproportionate power level can lead to reckless spending and, eventually, default.
With the ability to print their own money, countries like the United States, Great Britain and Japan appear immune to a debt default, but this is not the case. Despite a stellar record overall, the United States has technically defaulted a few times throughout its history. In 1979, the Treasury temporarily missed payments on $122 million in debt because of a paperwork error. Even if the government can pay its debts, legislators may not be willing to do so, as periodic clashes over the debt limit remind us.
Investors can take a haircut on government debt, even if the nation has not officially defaulted. Whenever a country’s treasury must print more money to meet its obligations, the country’s total money supply increases and each dollar in circulation loses some of its value.
When a country defaults on its debt, the impact on bondholders can be severe. In addition to punishing individual investors, defaulting impacts pension funds and other large investors with substantial holdings.
One way that institutional investors can protect themselves against catastrophic losses is through a contract known as a credit default swap. The contract seller agrees to pay any remaining principal and interest should the nation go into default. In exchange, the buyer pays a period protection fee, which is similar to an insurance premium. The protected party agrees to transfer the original bond, which may have some residual value, to its counterpart should a negative credit event occur.
While originally intended as a form of protection, swaps have also become a common way to speculate on a country’s credit risk. Many trading credit swaps do not have positions on the underlying bonds that they reference. For example, an investor who thinks the market has overestimated Greece’s credit problems could sell a contract and collect premiums and be confident that there is no one to reimburse.
Because credit default swaps are relatively sophisticated instruments and trade over-the-counter, getting up-to-date market prices is difficult for typical investors. This is one of the reasons they are typically used by institutional investors with more extensive market knowledge and access to special computer programs that capture transaction data.
Just as an individual who misses payments has a harder time finding affordable loans, countries that default – or risk default, for that matter – experience substantially higher borrowing costs. Agencies such as Moody’s, Standard & Poor’s and Fitch are responsible for rating the debt quality of countries worldwide based on their financial and political status. In general, nations with a higher credit rating enjoy lower interest rates.
When a country does default, it can take years to recover. Argentina, which missed bond payments beginning in 2001, is a perfect example. By 2012, the interest rate on its bonds was still more than 12 percentage points higher than that of U.S. Treasuries.
Perhaps the biggest concern about a default, however, is the impact on the broader economy. In the United States, many mortgages and student loans are pegged to Treasury rates. If borrowers were to experience dramatically higher payments as the result of a debt default, the result would be substantially less disposable income to spend on goods and services.
Because the contagion can spread to other economies, countries with close ties – particularly those that own much of the debt – will sometimes step in to avert a default. This happened in the mid-1990s when the United States helped to bail out Mexican bonds. And in the wake of the 2008 global recession, the International Monetary Fund, European Union and European Central Bank provided Greece with much-needed liquidity.
The Perfect Time to Invest?
Where some investors look at a financial crisis and see chaos, others recognize an opportunity. These investors believe that default represents a bottom point – or something close to it – for government bonds. For the optimistic investor, the only direction for these bonds is up.
A number of “vulture funds” specialize in precisely this type of activity. Much like a debt collection agency buys personal credit accounts at a low cost, these funds purchase government bonds for a fraction of their original worth.
Because of the economic fallout that typically occurs after a default, investors frequently seek undervalued stocks also. Investing in defaulting countries comes with its fair share of risk because there is no guarantee that a rebound will ever take place. Those seeking security in their portfolio above all else should probably invest elsewhere.
However, recent historical examples are encouraging for the growth-oriented investor. For instance, within the past few decades, equity markets in Russia, Brazil and Mexico increased substantially in the wake of a bond crisis. The key is to look for companies with competitive advantages and a low price-to-earnings ratio that reflects their elevated risk level.
The Bottom Line
There have been numerous government defaults over the past few decades, particularly by countries that borrow in a foreign currency. When default occurs, the government’s bond yields rise precipitously creating a ripple effect throughout the domestic, and often the world, economy.
 https://www.moodys.com/sites/products/DefaultResearch/2007400000587968.pdf (see Table on page 7)
 https://www.npr.org/sections/goatsandsoda/2018/04/20/604169277/a-debt-cr… (see para. 3)