flâneur

When Does Federal Debt Reach Unsustainable Levels? Spring 2026 - Onward | Penn Wharton Budget Model

budgetmodel.wharton.upenn.edu · 4,496 words · saved by 1 readers

We estimate that the United States federal debt cannot rationally exceed roughly 210 percent of GDP as an outer limit. Under historical excess cost growth in healthcare, this outer limit is likely reached within 20 years; there is a 25% chance of reaching it in 14 years. Debt markets unravel earlier if beliefs about government repayment shift.

We estimate that the United States federal debt cannot rationally exceed roughly 210 percent of GDP as an outer limit. Under historical excess cost growth in healthcare, this outer limit is likely reached within 20 years; there is a 25% chance of reaching it in 14 years. Debt markets unravel earlier if beliefs about government repayment shift. Key Findings We project that the outer-bound debt-to-GDP ratio that the U.S. economy can sustain is about 210 percent of GDP. Above this level, there is no feasible future additional tax on broad-based labor income that can finance the interest…

saved by

related reading