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Market Commentary | March 24, 2022

Will Rising Federal Debt Slow Economic Growth?

Liz Ann Sonders By Liz Ann Sonders

There is always a lot of controversy around the implications of high government debt. Over the past 70 years, high (and rising) government debt has generally been accompanied by weaker economic activity. The cause and effect can be debated, and there is also a bit of a chicken-and-egg, or “circular” argument: High and rising debt is a burden on growth, but low levels of growth also trigger an increase in government spending, higher budget deficits and higher debt.

In other words, one argument holds that a high and rising burden of debt crimps economic growth due to the “crowding-out” effect (that is, servicing the debt crowds out more productive spending and/or investments). A competing argument is that economic growth generally has been slowing over the past several decades—driven by demographics, globalization/competition, technology/innovation, and low inflation—which has led to increased government spending to try to boost growth, thereby increasing the deficit and, in turn, debt levels. The chart below represents the broadest measure of government debt, including federal government debt, state and local debt, and government-sponsored enterprise (GSE) debt (e.g., Fannie Mae and Freddie Mac). Courtesy of the strength of the economic rebound coming out of the lockdown phase of the pandemic—at the federal, state and local levels—government debt as a percentage of gross domestic product (GDP) has moved lower, which is good news (at least in relative terms).                                                             

Gov’t debt high, but falling

The chart shows total government debt as a percent of gross domestic product from 1951 to 2021. It was below 75% from 1963 to 1985. It has been above 100% since 2001.

Source: Charles Schwab, Bloomberg, Federal Reserve, ©Copyright 2022 Ned Davis Research, Inc. Further distribution prohibited without prior permission. All Rights Reserved. See NDR Disclaimer at www.ndr.com/copyright.html. For data vendor disclaimers refer to www.ndr.com/vendorinfo/, as of 12/31/2021.

Is rising debt inflationary?

Although it’s not supported by any historical data, there is an elevated concern expressed about high debt and whether it, in and of itself, leads to serious and persistent inflation. The visual below looks at every decade since the 1970s—each color-coded. It shows the relationship between debt as a percentage of gross domestic product (GDP) and the inflation rate, as measured by the core personal consumption expenditures (PCE) measure (which is the Federal Reserve’s preferred metric). As shown, as debt growth expanded as a share of GDP, inflation moved lower, not higher. There is a more recent debate about how much of the past year’s inflation surge is due largely to COVID-19-specific supply/demand dislocations vs. the blow-out of the budget deficit as fiscal stimulus ramped up to ease the strains of the COVID recession. The answer is probably both.

Debt vs. inflation

Scatter dot plot shows public debt as a percentage of nominal gross domestic product and the inflation rate as measured by core personal consumption expenditures in the 1970s, 1980s, 1990s, 2000s, 2010s and 2020s.

Source: Charles Schwab, Bloomberg, as of 12/31/2021.

Looking back, the United States’ “net national savings” rate was relatively high coming out of World War II, but the United States had to finance itself internally after the war, given that Europe and Japan were all in dire financial straits. The difference today is that those and other countries have been more than willing to buy U.S. debt. In addition, the cost of servicing debt is currently historically low, so the Federal Reserve’s role in “financing U.S. debt” is occurring at a very low cost (even if there are unintended negative consequences). In fact, as shown below, net interest payments are expected to remain low, before accelerating again.

Interest payments low for now

Net interest payments as a percentage of nominal GDP were about 1.2% in 1965, rose above 3% in the 1990s, then dropped below 1.5% in the early 2000s.

 

Source: Charles Schwab, CBO (Congressional Budget Office):  An Update to the Budget Outlook: 2021 to 2031 (7/21/2021). 

Longer term, the burden of interest payments is expected to accelerate, as shown above. Based on estimates from the Congressional Budget Office (CBO), the projected growth rate in government spending on interest payments over the next decade will swamp the growth rate of other spending categories.

Interest payments’ high growth

Net interest payments are expected to grow by more than 150% by the year 2031. By contrast, government spending on health care is expected to grow by 82%, on Social Security by 78%, on defense discretionary by 25%, on non-defense discretionary almost flat, and other mandatory spending is expected to drop by 87%.

Source: Charles Schwab, CBO (Congressional Budget Office):  An Update to the Budget Outlook: 2021 to 2031 (7/21/2021). 

More debt is unlikely to generate greater economic growth

Even under any future dire assumptions of the growth rate of net interest payments, we believe there is little risk of a U.S. debt default. In the meantime, there is generally an agreed-upon set of ways government can reduce its debt burden. One way, which the United States has been employing since the pandemic erupted is typically referred to as “financial repression”—involving keeping interest rates extremely low, which keeps real yields in negative territory. This force is not yet in the rear-view mirror, but the Federal Reserve has, of course, started to raise interest rates.

Another way is for the government to reduce spending and/or increase taxes. Thanks to the removal of much of the pandemic-related direct fiscal stimulus, and the beneficial impact on tax receipts courtesy of the strong economic recovery coming out of the lockdowns, both are working in favor of bringing down the rate of debt growth. Finally, the government can also try to boost growth and inflation, such that the denominator (GDP) is growing faster than the numerator (debt). That was exactly what happened in the late 1940s, just after WWII. Today, however, inflation is growing much faster than the economy; as well as faster than wage and income growth.

What we do know now is that as the debt ratio was soaring, each additional dollar of debt lead to significantly less than a dollar’s worth of economic growth. This is referred to as the “credit multiplier” or “money multiplier.” More debt is unlikely to generate greater economic growth, other than perhaps for a short span of time. As noted earlier, the weight of debt also represents a weight on economic growth. For all the cheering of the last expansion being the longest on record (from June 2009 to February 2020), it was also the weakest on record, as shown below.

Prior post-WWII economic expansion long, but weak

Of the 12 periods of economic expansion since 1949, the most recent, which began in 2009, was the longest and weakest, achieving only around 25% of post-recession cumulative real GDP growth.

Source:  Charles Schwab, Bloomberg, Bureau of Economic Analysis, as of 12/31/2021.

A key to durable economic growth likely will require a continued move down in government debt ratios, which could trigger an expansion in the aforementioned credit multiplier.

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