How Will Our Children Know They Face a Crushing Debt Burden?

Photograph Source: Jay Tamboli – CC BY 2.0 That may seem like a silly question. Of course they will know because there are a number of well-funded policy…

Photograph Source: Jay Tamboli – CC BY 2.0

That may seem like a silly question. Of course they will know because there are a number of well-funded policy shops that will be spewing out endless papers and columns telling them that they are facing a crushing debt burden. And, because these policy shops are well-funded and well-connected we can be sure that major media outlets, like the New York Times, Washington Post, and National Public Radio, will give their complaints plenty of space.

But let’s imagine a world where our children weren’t constantly being told that they face a crushing debt burden, how would they know? It might be hard if the latest budget projects are close to the mark. The Congressional Budget Office (CBO)just released new projections for the budget and the economy. They show in 2031, the last year in their budget horizon, the interest burden on our debt will be 2.4 percent of GDP. That’s up from current interest costs of 1.4 percent of GDP.[1] That implies an increase in the debt burden, measured by interest costs, of 1.0 percentage points of GDP.

Will an interest burden of 2.4 percent of GDP crush our children? On the face of it, the deficit hawks have a hard case here. The interest burden was over 3.0 percent of GDP for most the early and mid-1990s. And for those who were not around or have forgotten, the 1990s, or at least the second half, was a very prosperous decade. It’s a bit hard to see how an interest burden of 2.4 percent of GDP can be crushing, if burdens of more than 3.0 percent of GDP were not a big problem.

But, the debt burden may be higher than the current projections show. After all, President Biden has proposed a $1.9 trillion pandemic rescue package. He also will have other spending initiatives, and the CBO baseline includes tax increases in current law that may not actually go into effect.

CBO’s latest projections put the debt at $35.3 trillion in 2031. Let’s assume that the rescue package and other issues raise the debt for that year by 10 percent, or $3.5 trillion. This brings the interest burden to 2.7 percent of GDP. That’s still below the 1990s level. Furthermore, insofar as the rescue package and other initiatives are successful in boosting growth, GDP, the denominator in this calculation, will be larger, which will at least partially offset the higher interest burden.

One point the deficit hawks add to this calculation is that interest rates are extraordinarily low at present. CBO does project that interest rates will rise, but in 2031 they still project an interest rate on 10-year Treasury bonds of just 3.0 percent. This is up from 1.1 percent at present, but still well below the rates we saw over the 40 years before the Great Recession. It certainly is not impossible that interest rates will rise to 4.0 percent or even 5.0 percent.

Higher rates will mean that the debt poses a greater interest burden, but there are couple of important qualifications that need to be made. First, much of our debt is long-term. The 30-year bond issued in 2021 at a 2.0 percent interest rate doesn’t have to be refinanced until 2051. That means that even if interest rates do rise substantially they will only gradually lead to a substantially higher interest burden.

The other point is that we have to ask about the reason interest rates are rising. It is possible that interest rates will be rising even as the inflation rate remains more or less in line with CBO’s latest projection of around 2.0 percent. In that case, higher interest rates mean a greater burden through time.

However, interest rates may also rise because we see higher than projected inflation. Suppose the inflation rate rises to 3.0 percent, roughly a percentage point higher than projected. If interest rates also rise by a percentage point, so that the interest rate on a 10-year Treasury bond in 2031 is 4.0 percent, instead of 3.0 percent, we would still be looking at the same real interest rate. In that case, the value of the bond would be eroded by an extra 1.0 percentage point annually, due to the impact of higher inflation.

In the case where higher inflation is the reason for higher interest rates, the actual burden of the debt does not change. With nominal GDP growing more rapidly due to the higher inflation, the ratio of debt to GDP would be lower than in the case with lower inflation.[2]  This means that we only need to worry about a higher interest burden if interest rates rise without a corresponding increase in the rate of inflation.

What would an additional interest burden of 1.0 percentage point of GDP look like?

Suppose that the CBO projections prove to be exactly right. At first glance, this higher interest burden implies that, if the economy is operating near its capacity, we would have to get by having the government spend roughly 1.0 percentage point less of GDP on various programs. This could mean, for example, cuts to spending on education and infrastructure, or the military. Alternatively, it would need to raise taxes by roughly 1.0 percentage point of GDP, or some combination in order to offset the additional interest payments on the debt.

In fact, the first glance story is likely to substantially overstate the impact of this debt burden. The reason we would need to cut spending and/or raise taxes is to keep the economy from overheating. The interest burden increases this risk by increasing the income of bondholders, who then spend more money because of their higher income.

But the bondholders don’t spend all of the interest income they receive, in fact, they might spend a relatively small share. Remember, the people who hold government bonds are disproportionately higher income households, that’s why it is possible to say there is burden from interest payments. If the interest was paid out to all of us equally, then we would just be paying ourselves, as was the case with the pandemic checks, and there would be no burden.[3]

With a large share of interest payments going to the wealthiest households, perhaps 70 cents on a dollar ends up being spent. This is what we have to offset with spending cuts or higher taxes. That means we need to come up with a combination of spending cuts and tax increases that will reduce demand in the economy by 0.7 percent of GDP.

If we did this on the spending side, we would need to cut an amount of spending roughly equal to this amount. In the current economy, 0.7 percent of GDP would come to around $150 billion in spending cuts, roughly 20 percent of the military budget or twice the annual for Food Stamps.

On the tax side, we might be tempted to take it from the wealthy, but we then come to back to the same issue, that the wealthy save much of their income. If we want to reduce the consumption of the wealthy by an amount equal to 0.7 percent, we may have to raise taxes on them by something close to twice this amount, or 1.4 percent of GDP.

Suppose this proves politically impossible, so we end up having to share the higher tax burden more or less evenly across households. This means a tax increase equal to roughly 0.7 percent of people’s incomes. Is this a big deal?

Source: Author’s calculations, see text.

The figure above shows the impact of CBO’s projected increase in productivity over the next decade on wages, assuming productivity growth is fully passed on in higher wages. It also shows the 0.7 percent hit from debt burden taxes. As can be seen, the projected wage gains from higher productivity growth are roughly twenty times the “crushing” burden of the debt calculated above. This means that even with a higher tax burden due to the debt we are now building up, workers ten years out should enjoy substantially higher living standards than they do today.

There is the obvious issue that productivity growth does not automatically translate in higher wage growth. While wage growth for the typical worker did track productivity growth from 1947 to 1973, that has not been the case since 1979. Average wage growth did continue to track productivity growth reasonably well in the last four decades, but most of the gains went to high end workers, such as top- level corporate executives and Wall Street types, typical workers saw little benefit.

This pattern of upward redistribution of before-tax income could continue for the next decade, which would mean that most workers cannot offset an increased tax burden with higher pay. That would be a very serious problem, but the problem would be the upward redistribution blocking wage growth, not the relatively minor tax increase they might see due to the debt. Anyone generally concerned about the well-being of workers ten years out, or further in the future, should be focused on what is happening to before tax income, not the relatively modest burden that taxes may pose due to the debt.

This brings up a final issue about burdens. As I have often pointed out, direct spending is only one way the government pays for services. It also grants patent and copyright monopolies to provide incentive for innovation and creative work. By my calculations, these monopolies add more than $1 trillion a year (4.8 percent of GDP) to cost of a wide range of items, such as prescription drugs, medical equipment, and computer software. The higher prices charged by the companies that own these monopolies are effectively a private tax that the government allows them to impose in exchange for their work. No honest discussion of the burden of government debt can exclude the implicit debt that the government creates with these monopolies.

At the end of the day, we hand down a whole economy and society to future generations. Anyone seriously asking about the well-being of future generations must look at the education and training we have given our children, the physical and social infrastructure, and of course the state of the natural environment. The government debt is such a trivial part of this story that is hard to believe that would even be raised in the context of generational equity, if not for the big money folks who want to keep it front and center.

Notes.

[1] The true debt burden is actually somewhat less than these numbers indicate. Last year the Federal Reserve Board refunded $88 billion, roughly 0.4 percent of GDP, to the Treasury. This was based on interest that it had collected on the bonds it held. In effect, this means that the Treasury paid an amount of interest equal to 0.4 percentage points of GDP to the Fed, which then handed the money right back to the Treasury. That leaves the actual interest burden around 1.0 percent of GDP.

[2] If the economy grows at a 2.0 percent real rate over the next decade, and the inflation rate averages 2.0 percent, then nominal GDP will be 48 percent larger in 2031 than it is today. If it grows at a 2.0 percent real rate and the inflation rate averages 3.0 percent, nominal GDP will be 63 percent larger in 2031 than it is today. With nominal GDP 10 percent larger in 2031 in the case with higher inflation than the case with lower inflation, the same amount of interest would imply a 10 percent lower burden, relative to GDP. Alternatively, to have the same burden relative to GDP, interest payments would have to be 10 percent higher.

[3] There is an argument that because of the higher levels of government spending that created the debt, we had higher interest rates than would otherwise have been the case. The higher interest rates reduce investment, which means that productivity growth is slower than would otherwise be. Slower productivity would translate into slower GDP growth which would mean the economy is smaller in 2031 than would have been the case if we had lower deficits in 2021. With interest rates at extraordinarily low levels, even as we run very large deficits, it is not clear that many people would want to make this argument.

This article first appeared on Dean Baker’s Beat the Press blog.


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