U.S. federal debt is projected to reach $40 tln in August 2026, several months
sooner than the CBO had forecast. Debt growth has accelerated since the global
financial crisis and the COVID stimulus era; milestones include $10 tln (2008),
$20 tln (2017) and $30 tln (Jan 2022). Drivers cited: crisis-related fiscal
stimulus, revenue shortfalls tied to tariff policies and returned tariffs (one
estimate of ~$200 bln), a 2025 Republican-led "Big and Beautiful" fiscal bill
estimated at about $2 tln over five years, and a rising-interest-cost feedback
loop as higher refinancing costs push debt-servicing needs higher.
Market-relevant forecasts: Bank of America says U.S. debt could top $50 tln by
July 2029 unless 5-year yields fall below 3.25%; if rates hold, annual interest
costs could rise to $1.7 tln by Nov 2028. The Kobeissi Letter reports record
interest outlays of $1.4 tln over the past 12 months and projects interest could
become the single largest federal outlay by 2028. JP Morgan warns that, at
current issuance rates through FY2027, short-term Treasury bills could comprise
nearly 25% of debt—raising sensitivity to short-end rate moves.
