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Federal Debt in a Time of Pandemic

Summary:
In the midst of 1,001 ways that the government could increase spending or reduce taxes to blunt the immediate economic effect of the coronavirus pandemic, spare a moment for the existing level and trend of federal debt. The Congressional Budget Office has issued "Federal Debt:A Primer" (March 2020).Here's the ratio of federal debt held by the public to GDP, going back to 1790. The "held by the public" means that when one part of the federal government loans money to another part of the federal government--like when the Social Security Trust Fund invests in US Treasury debt--this doesn't require the federal government to borrow from outside the government, and thus isn't counted in the total. The historical spikes in the debt/GDP ratio are named easily enough. You can point out the rising

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In the midst of 1,001 ways that the government could increase spending or reduce taxes to blunt the immediate economic effect of the coronavirus pandemic, spare a moment for the existing level and trend of federal debt. The Congressional Budget Office has issued "Federal Debt:A Primer" (March 2020).

Here's the ratio of federal debt held by the public to GDP, going back to 1790. The "held by the public" means that when one part of the federal government loans money to another part of the federal government--like when the Social Security Trust Fund invests in US Treasury debt--this doesn't require the federal government to borrow from outside the government, and thus isn't counted in the total.

Federal Debt in a Time of Pandemic
The historical spikes in the debt/GDP ratio are named easily enough. You can point out the rising levels of debt for the Revolutionary War, the Civil War, World War I, the Great Depression, World War II, the tax cuts and defense build-up of the 1980s, and the Great Recession. The current debt/GDP ratio is second-highest in US history, and trending toward highest. 

Much of the report focuses on the specific financial instruments that the Treasury uses to borrow:  short-term Treasury "bills" that are repaid in periods from one month up to one year; Treasury "notes" that are repaid over periods from two to 10 years; long-term Treasury "bond" repaid over 30 years; Treasury Inflation-Protected Securities (TIPS) where the principal value of the borrowing is adjusted for inflation twice a year; and Floating Rate Notes (FRNs) where the interest rate adjusts up and down based on the interest rate for 13-week Treasury bills. The report notes:

Since the late 1990s, Treasury notes typically have accounted for more than half of all outstanding marketable securities, peaking at 67 percent in 2013Treasury bills made up between 20 percent and 30 percent of marketable debt until 2010, when the Treasury began to issue fewer short-term instruments. Those securities declined to just 11 percent of marketable debt in 2015 before rising back to 15 percent in 2019. By the end of 2019, bonds accounted for 14 percent of the Treasury’s outstanding marketable debt, in line with their typical share since the end of the 1990s. TIPS were first issued in 1997 and—after an initial growth phase through 2004—have represented between 7 percent and 10 percent of outstanding marketable debt since then. By the end of 2019, the share of debt taken up by FRNs, which were introduced in 2014, was just 3 percent. ...

Offerings that best meet investors’ needs typically will lower the Treasury’s overall cost of borrowing. Short-term instruments generally have lower interest costs, but they expose the government to the risk of paying higher interest rates when it refinances the issues. Conversely, long-term securities typically involve higher rates but provide more certainty about the future costs of interest payments because they require less frequent financing.

Putting all of these together, the average time to maturity for federal borrowing hasn't changed much in the last two decades: as the figure shows, it got a little shorter during the Great Recession, but now it's back to roughly the same level as 2001.
Federal Debt in a Time of Pandemic
How much of the Treasury borrowing has come from domestic sources and how much from foreign sources? About half comes from abroad, much of that from China and Japan.
Federal Debt in a Time of Pandemic
One interesting point I had not considered before is the how higher student debt has played a role in raising federal debt. The CBO explains:
In 2011, the federal student loan program stopped providing loan guarantees to banks and instead began lending to borrowers directly, with the result that the magnitude of federal holdings of financial assets began to increase markedly. In total, at the end of 2019, the government’s financial assets—loans as well as cash—had an estimated value of nearly $1.8 trillion. Subtracting that amount from the $16.8 trillion in debt held by the public leaves about $15.0 trillion in debt held by the public net of financial assets. Debt held by the public at the end of 2019 was equal to about 79 percent of gross domestic
product; debt net of financial assets was about 71 percent of GDP.
The CBO report is focused on laying out trends and patterns, not on ringing the gong about possible dangers. However, there's a brief discussion of risks and effects at the end of the report.

1) "If federal debt as a percentage of GDP continues to rise at the pace of CBO’s current-law projections, the economy would be affected in two significant ways: Growth in the nation’s debt would dampen economic output over time, and higher interest costs would increase payments to foreign debt holders and thus reduce the income of U.S. households by rising amounts."

2) "The increases in debt that CBO projects would also pose significant risks to the fiscal and economic outlook, although those risks are not currently apparent in financial markets. ... High and rising federal debt increases the likelihood of a fiscal crisis because it erodes investors’ confidence in the government’s fiscal position and could result in a sharp reduction in their valuation of Treasury
securities, which would drive up interest rates on federal debt because investors would demand higher yields to purchase Treasury securities. However, the debt-to-GDP ratio has no identifiable tipping point because the risk of a crisis is influenced by other factors, including the long-term budget outlook, near-term borrowing needs, and the health of the economy. Moreover, because the United States currently benefits from the dollar’s position as the world’s reserve currency and because the federal government borrows in dollars, a financial crisis—similar to those that befell Argentina, Greece, or Ireland—is less likely in the United States. Although no one can predict whether or when a fiscal crisis might occur or how it would unfold, the risk is almost certainly increased by high and rising federal debt."

3) "Not all effects of the projected path of debt are negative, however. In addition to allowing policymakers to maintain current-law spending and revenue policies, that path would cause underlying interest rates to be higher than they otherwise would be, giving the Federal Reserve more flexibility in implementing monetary policy."

4) At the current moment, I'd emphasize one other reason mentioned briefly: "In addition, high debt might cause policymakers to feel constrained from implementing deficit-financed fiscal policy to respond to unforeseen events ..."  The enormous and fundamentally healthy US economy can take on more debt in response to the coronavirus. But it's just a fact that if you have already loaded up on borrowing, and your future tax and spending plans already have you locked into pattern of additional borrowing, then your flexibility is lower. The idea of taking steps to hold down the rise in federal borrowing is never going to be  popular. It feels as if it's all discipline and no benefit--right up to when a situation arises when you would like to be able to borrow with confidence in an unconstrained way to meet the challenge of a pandemic. 

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