The IMF expects the US debt-to-GDP ratio to rise to 117{5e7f07e14add20b2e04f4edb85a447d3cd8121fc27b809645e9fed603c22cc5c} by 2022, an increase of 10 percentage points since 2016.
Of Major Economies, Only the US Faces Sizable Rise in Public Debt Burden
By: William R. Cline, Melina Kolb – Peterson Institute
Two possible solutions
Auerbach and Gale suggest that although in the short-term the US budget deficit seems manageable, the debt-to-GDP ratio is already quite high relative to historical norms and expected to rise significantly in the future. They note that for policymakers to ensure that by 2047 the debt-to-GDP ratio does not exceed its current level they would need to implement a combination of immediate and permanent spending cuts and/or tax increases totaling 3.2 percent of GDP.
The Fiscal Outlook in a Period of Policy Uncertainty
Authors: Alan J. Auerbach, William G.Gale
From: University of California, Berkeley – Brookings Institution
Elmendorf and Sheiner, on the other hand agree that the federal deficit is on an “unsustainable path” but suggest a different solution: increase federal investment, as the current low level of interest rates offers the opportunity for federal borrowing aimed at infrastructure and long-run investments, while enacting changes in federal spending and taxes that will reduce deficits gradually over time.
Federal Budget Policy with an Aging Population and Persistently Low Interest Rates
Authors: Douglas W. Elmendorf, Louise M. Sheiner
From: Harvard University – Brookings
Authors: Francesco Bianchi, Leonardo Melosi
From: Duke University – FRB of Chicago