U.S. Post-WWII Debt Reduction Not Solely Due to Economic Growth, Study Finds
A new paper in the American Economic Journal: Macroeconomics by Julien Acalin and Laurence Ball re-examines the significant reduction in the U.S. federal public debt-to-GDP ratio from over 100% in 1946 to 23% by 1974. Contrary to a common belief that economic growth alone was the primary driver, the authors contend that historical contingencies and specific distortions played a crucial role. They identify three key factors: government primary surpluses, which involved taxes exceeding government spending to pay off war debt; the Federal Reserve's interest rate peg from 1942 to 1951, which capped government bond yields at low levels; and surprise inflation, which eroded the real value of nominal government debt. Acalin stated that the distortion effect, particularly from interest rates, was massive, accounting for approximately 40 percentage points of the debt-to-GDP ratio reduction. The study concludes that without these surpluses and distortions, the debt-to-GDP ratio would have only fallen to 74% by 1974,...