WASHINGTON, D.C. / RankWire.AI / – U.S. gross national debt has moved above $40 trillion for the first time, setting a new fiscal milestone. The U.S. Treasury’s Debt to the Penny data recorded $40.047 trillion on Aug. 18. By Aug. 27, the total stood at about $40.078 trillion. Outside investors and institutions held about $32.314 trillion of that debt, while federal government accounts held roughly $7.764 trillion.
The $40 trillion mark arrived less than five months after gross federal debt reached $39 trillion in March. A decade earlier, in August 2016, the total stood near $19.5 trillion. Federal debt grows when government spending exceeds revenue and Washington borrows to cover the difference. Pandemic-era spending produced unusually large deficits, while annual budget shortfalls continued after emergency programs ended. The government finances those gaps mainly through the sale of Treasury securities.
The federal budget deficit totaled $1.8 trillion during the first 10 months of fiscal 2026, the Congressional Budget Office reported in August. That was $169 billion more than the deficit during the same period a year earlier. Federal revenues rose by $139 billion, or 3%, while outlays increased by $308 billion, or 5%. The agency now estimates a $2.1 trillion deficit for fiscal 2026, up from its February estimate of $1.9 trillion.
Interest costs rise with federal borrowing
Interest payments have become a major part of federal spending as debt levels and financing costs have increased. Current projections put net federal interest spending above $1 trillion in fiscal 2026, compared with $970 billion in 2025. That equals about 3.3% of gross domestic product. By 2036, net interest spending reaches $2.1 trillion under current projections, or 4.6% of GDP. At that level, interest costs nearly equal all projected discretionary federal spending.
Debt held by the public also stands near historic highs when measured against the size of the U.S. economy. Current projections place that debt at 101% of GDP in 2026 and 120% by 2036. The previous record was 106% in 1946, shortly after World War II. The baseline puts publicly held debt near $56 trillion by 2036 and gross federal debt near $64 trillion. The statutory federal debt limit currently stands at $41.1 trillion.
Higher debt reaches the wider economy
Federal borrowing also affects financing conditions beyond the government budget. Budget analysts have found that greater government borrowing competes with private borrowers for available savings and raises borrowing costs over time. That process reduces private investment and slows economic output compared with a lower-debt path. Lower investment also leaves workers with less productive capital, which weighs on productivity and compensation. Those effects connect federal debt levels with credit conditions, business investment and household income across the economy.
Gross national debt and the federal deficit measure different parts of the government’s finances. Gross debt represents accumulated federal obligations, including publicly held debt and securities held by government accounts. The deficit measures the annual gap between spending and revenue. Both remain elevated in 2026, with gross debt above $40 trillion and the annual deficit estimated at $2.1 trillion. Federal deficits equal about 5.8% of GDP this year, compared with a 50-year average of 3.8%.