US Debt Crosses $40 Trillion Threshold After Doubling Under Trump and Biden
US Debt Crosses $40 Trillion Threshold After Doubling Under Trump and Biden
The total U.S. national debt has surpassed $40 trillion for the first time, marking a major milestone in the country’s worsening fiscal position.
The U.S. Treasury reported that total public debt outstanding reached about $40.047 trillion on August 18, 2026. The figure includes roughly $32.266 trillion in debt held by the public and $7.782 trillion in intragovernmental holdings.
The milestone comes less than five months after U.S. debt passed $39 trillion and highlights how quickly federal borrowing has accelerated. Reuters reported that the debt has more than doubled since Donald Trump first entered the White House in January 2017, when it stood at about $19.95 trillion.
U.S. debt has doubled in less than a decade
The increase in debt has occurred across multiple administrations, with the sharpest jump coming during the COVID-19 pandemic.
During Trump’s first presidency, the federal government increased borrowing substantially as Washington financed emergency economic support, business assistance and other pandemic measures. Biden inherited those fiscal pressures and continued large-scale spending while introducing additional spending programmes.
Reuters estimates that U.S. debt increased by about $11.6 trillion during Trump’s two terms and by approximately $8.4 trillion during Biden’s four-year presidency.
The numbers, however, cannot be attributed entirely to decisions made by either president. Pandemic spending accounted for roughly one-third of the increase since 2017, while longer-running budget imbalances, tax policies and rising spending on major entitlement programmes have also pushed debt higher.
Why the $40 trillion debt milestone matters
The headline figure is enormous, but the more important issue for economists and investors is how quickly the debt is growing relative to the government’s ability to finance it.
Washington continues to spend considerably more than it collects in federal revenue. Social Security, Medicare and other mandatory programmes represent a large and growing share of federal spending, while interest payments on existing debt are becoming increasingly expensive.
Higher interest rates have made the problem more serious. As older Treasury securities mature and are replaced with new debt carrying higher yields, the government must devote more money to servicing its existing borrowing.
Interest costs have now become one of the largest items in the federal budget, putting them ahead of Medicare and increasing pressure on other government priorities.
Tax cuts and spending add to the pressure
The U.S. fiscal problem is not simply a spending issue.
Federal revenue has also been constrained by tax policies, while spending on Social Security, Medicare, defence and other programmes continues to rise. This creates a structural gap that requires the government to borrow more money to cover annual deficits.
That imbalance means that even when the economy is not facing an immediate recession, the national debt can continue increasing.
The concern among fiscal watchdogs is that Washington has not yet produced a politically viable long-term strategy capable of bringing spending and revenues closer together.
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Investors are watching the Treasury market
The consequences of rising debt extend beyond government finances.
The U.S. Treasury relies on investors to purchase government securities to finance federal deficits and refinance maturing debt. If investors demand higher yields to hold those securities, the government’s borrowing costs increase.
Higher Treasury yields can also affect the wider economy because government borrowing rates influence other interest rates, including corporate borrowing costs, mortgages and consumer credit.
Reuters has reported growing concerns about the bond market as investors assess the combination of large government borrowing needs, rising interest expenses and uncertainty over future fiscal policy.
A warning for future budgets
The $40 trillion milestone does not mean the United States is immediately facing default or a financial collapse. U.S. Treasury securities remain among the world’s most important financial assets, and the dollar continues to play a central role in global finance.
The bigger concern is the direction of travel.
As debt grows, an increasing portion of federal revenue can be consumed by interest payments rather than investments in infrastructure, education, defence or other public priorities. A future recession, financial shock or geopolitical crisis could make that pressure more difficult to manage.
Fiscal watchdogs have therefore warned that the $40 trillion milestone should be treated as a signal of a deeper structural problem rather than simply a large headline number.
What comes next for U.S. finances
Reducing the growth of U.S. debt would require politically difficult decisions.
Washington could seek to reduce spending, increase tax revenue, reform major entitlement programmes, or combine several of these approaches. None is straightforward because Social Security, Medicare, defence and taxation affect millions of Americans and remain highly sensitive political issues.
For now, the government continues to operate with large deficits, meaning the debt is likely to keep rising.
The crossing of the $40 trillion threshold therefore represents more than a symbolic milestone. It shows how pandemic-era borrowing, persistent deficits, tax and spending policies, and rising interest costs have combined to push the United States into an unprecedented level of federal indebtedness.
Source: U.S. Treasury Department.
