While economic growth and record-low interest rates have made it easy to service existing government debt, it’s also created a situation where government debt has grown in to over $63 trillion in absolute terms. The global economic tide can change fast, and in the event of a recession or rapidly rising interest rates, debt levels could come back into the spotlight very quickly.
The Debt Snowball
Today’s visualization comes to us from HowMuch.net and it rolls the world’s countries into a “snowball” of government debt, colored and arranged by debt-to-GDP ratios. The data itself comes from the IMF’s most recent October 2018 update. The structure of the visualization is apt, because debt can accumulate in an unsustainable way if governments are not proactive. This situation can create a vicious cycle, where mounting debt can start hampering growth, making the debt ultimately harder to pay off. Here are the countries with the most debt on the books:
Japan and Greece are the most indebted countries in the world, with debt-to-GDP ratios of 237.6% and 181.8% respectively. Meanwhile, the United States sits in the #8 spot with a 105.2% ratio, and recent Treasury estimates putting the national debt at $22 trillion.
Light Snow
On the opposite spectrum, here are the 10 jurisdictions that have incurred less debt relative to the size of their economies:
Macao and Hong Kong – both special administrative regions (SARs) in China – have virtually zero debt on the books, while the official country with the lowest debt is Brunei (2.8%). on These are in the form of Treasury securities, some of the most liquid assets worldwide. Central banks use them for foreign exchange reserves and private investors flock to them during flights to safety thanks to their perceived low default risk. Beyond these reasons, foreign investors may buy Treasuries as a store of value. They are often used as collateral during certain international trade transactions, or countries can use them to help manage exchange rate policy. For example, countries may buy Treasuries to protect their currency’s exchange rate from speculation. In the above graphic, we show the foreign holders of the U.S. national debt using data from the U.S. Department of the Treasury.
Top Foreign Holders of U.S. Debt
With $1.1 trillion in Treasury holdings, Japan is the largest foreign holder of U.S. debt. Japan surpassed China as the top holder in 2019 as China shed over $250 billion, or 30% of its holdings in four years. This bond offloading by China is the one way the country can manage the yuan’s exchange rate. This is because if it sells dollars, it can buy the yuan when the currency falls. At the same time, China doesn’t solely use the dollar to manage its currency—it now uses a basket of currencies. Here are the countries that hold the most U.S. debt: As the above table shows, the United Kingdom is the third highest holder, at over $655 billion in Treasuries. Across Europe, 13 countries are notable holders of these securities, the highest in any region, followed by Asia-Pacific at 11 different holders. A handful of small nations own a surprising amount of U.S. debt. With a population of 70,000, the Cayman Islands own a towering amount of Treasury bonds to the tune of $284 billion. There are more hedge funds domiciled in the Cayman Islands per capita than any other nation worldwide. In fact, the four smallest nations in the visualization above—Cayman Islands, Bermuda, Bahamas, and Luxembourg—have a combined population of just 1.2 million people, but own a staggering $741 billion in Treasuries.
Interest Rates and Treasury Market Dynamics
Over 2022, foreign demand for Treasuries sank 6% as higher interest rates and a strong U.S. dollar made owning these bonds less profitable. This is because rising interest rates on U.S. debt makes the present value of their future income payments lower. Meanwhile, their prices also fall. As the chart below shows, this drop in demand is a sharp reversal from 2018-2020, when demand jumped as interest rates hovered at historic lows. A similar trend took place in the decade after the 2008-09 financial crisis when U.S. debt holdings effectively tripled from $2 to $6 trillion.
Driving this trend was China’s rapid purchase of Treasuries, which ballooned from $100 billion in 2002 to a peak of $1.3 trillion in 2013. As the country’s exports and output expanded, it sold yuan and bought dollars to help alleviate exchange rate pressure on its currency. Fast-forward to today, and global interest-rate uncertainty—which in turn can impact national currency valuations and therefore demand for Treasuries—continues to be a factor impacting the future direction of foreign U.S. debt holdings.
