The International Monetary Fund (IMF) has issued a stark warning about the rising tide of public debt in countries across the globe, with the United States standing out because of its persistent fiscal deficits and mounting spending pressures.
The report emphasizes that countries, including the United States, need to address debt risks with carefully crafted fiscal strategies. It warns that debt levels could be worse than anticipated because of large spending pressures, sizeable unidentified debt, and overly optimistic debt projections.
The IMF attributes the potential underestimation of debt levels to several factors, including a political climate increasingly favoring higher government spending. This spending is being driven by concerns around security, an aging population, and the push to invest in green transitions.
“Rebuilding fiscal buffers in a growth-friendly manner and containing debt is essential to ensure sustainable public finances and financial stability,” the report urges.
“Experience shows that high debt and lack of credible fiscal plans can trigger adverse market reaction, constraining room to maneuver in the face of turbulence,” the economists wrote, emphasizing the need for proactive measures such as paring back spending.
The IMF’s analysis shows that planned fiscal adjustments—such as reducing spending by 1 percent of GDP over six years—are insufficient to stabilize debt. Instead, a cumulative tightening of 3.8 percent of GDP is needed to significantly cut debt levels, the economists contend, with the effort required in the United States being “substantially greater.”
The IMF identifies the reform of mandatory spending programs, such as Social Security and Medicare, as a crucial step. These programs account for a large and inflexible share of the U.S. budget, and reforming them could help rein in expenditures. Besides spending cuts, the IMF suggests that the United States could raise revenues by raising taxes or removing tax exemptions.
The IMF’s newly developed “debt-at-risk” framework—a tool used to estimate potential debt outcomes under different economic conditions—indicates that U.S. public debt could rise sharply under adverse scenarios.
Stronger fiscal governance is also essential, according to the IMF, which describes it as “key to mitigating the buildup of unidentified debt and containing debt vulnerabilities.” Countries with better fiscal governance—marked by budget transparency and adherence to fiscal rules—tend to have lower levels of unidentified debt, even during times of financial stress.