Federal Debt: A Heavy Load

As recently as 2007, the amount of federal government debt—Treasury securities held by the public—was just 35% of gross domestic product. At the end of 2019, it was 79%, and it’s likely to hit 104% in 2021. It only gets worse: The debt will likely rise to 109% by 2030 and approach 200% of GDP by 2050, according to estimates from the Congressional Budget Office. Those estimates don’t include another fiscal stimulus (which was being negotiated at press time) and assume Congress won’t extend tax breaks scheduled to expire in 2025.

For most of us, that kind of balance sheet would be ruinous. Interest rates would eat away at our income, making it difficult to pay expenses. Certainly, that has been the traditional view of the federal government’s debt: As rising deficits increase the amount of interest the government must pay each year, there’s less money available for other things. There have also been concerns about what would happen if China and other foreign investors were to stop buying Treasury securities. A deluge of debt would flood the market, and interest rates would have to rise to entice investors to buy it. That would cause interest rates on consumer and business loans to follow suit, which would hurt the economy.

So, should we worry? Well, yes and no.

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Reasons to be fearful. All things being equal, it’s better to have low debt than high debt. Interest rates are very low right now, but they could rise in the future. Economists have generally believed that a country should try to keep debt levels as a percentage of GDP steady over time, increasing debt during economic downturns and paying it down during good times. When the debt piles up year after year, it reduces the government’s ability to stimulate the economy when the next recession comes around. Governments that try to finance their deficits by increasing the money supply (usually by having the central bank buy the government’s debt) risk triggering inflation—and in especially bad cases, hyperinflation. In Germany in the 1920s, shoppers needed a wheelbarrow full of cash to buy a loaf of bread. Scholars believe this led to political instability that fueled the rise of Adolf Hitler.

Reasons to relax. The U.S. has the world’s largest economy and a sound financial system. Central banks around the world hold more dollars than any other currency. Most of the world’s exports and imports are priced in dollars. The world’s investors flock to U.S. Treasury securities because they are the safest in the world, with close to zero risk of default. That allows the U.S. Treasury to continue to sell its bonds despite low interest rates.

The Federal Reserve has signaled that it won’t raise short-term interest rates for the next three years, so we can expect the rates the government pays to stay relatively low for a long time. Low rates keep interest from eating up ever larger portions of the government pie.

In addition, the debt may never have to be fully paid back. As mentioned earlier, the Federal Reserve could buy government debt. Ordinarily, that would cause inflation. But since the early 1990s, something strange has happened: Inflation has been a constant 2% to 3% every year, regardless of whether federal government debt has increased or decreased. After the government increased spending in the wake of the Great Recession, inflation barely budged. A decline in oil prices since 2015 has helped, but there has been no inflationary reaction to debt levels, even when the unemployment rate fell to 3.5% in early 2020.

Conventional wisdom has long held that a country was in trouble if its debt exceeded 100% of GDP. But Japan’s debt has risen to 266% of GDP with no accompanying inflation. The government issues bonds, and the Bank of Japan buys bonds that aren’t purchased by the public. Japan’s example has changed the way economists think of risk for highly developed countries, and many think the U.S. could tolerate a high level of debt as well.

Whichever side you come down on, you can expect the government to run large deficits (relative to GDP) for a while and the Federal Reserve to keep interest rates low for as long as inflation behaves. Although low rates hurt income-seeking savers, they tend to buoy the stock market, which is beneficial for investors who have money in stocks and stock funds. As for how this trend will affect the overall economy, the only certainty is that we’re traveling in uncharted territory.