The U.S. national debt has surpassed $40 trillion during the first 19 months of President Trump's second term, driven by rising federal spending and the costly stalemate of the ongoing war with Iran. This fiscal strain is compounded by increasing borrowing costs, raising concerns about the sustainability of federal finances.
Yields on some U.S. government bonds have reached their highest levels in nearly two decades, escalating the cost of servicing the national debt. Budget experts warn that the mounting debt could force Congress and future administrations to consider politically challenging measures, such as tax increases or reductions in government benefits like Social Security. The debt milestone comes ahead of November's midterm elections, which will determine the control of Congress for the remainder of Trump's term.
The Trump administration's fiscal policies have contributed significantly to the national debt. Tax cuts during Trump's first term added an estimated $8.4 trillion to the debt, while second-term tax and immigration legislation is projected to add another $4.7 trillion to deficits. Despite efforts to reduce government waste, the administration has only marginally reduced the annual deficit in 2025, with the overall debt continuing to rise.
The U.S. fiscal challenges are not solely attributable to Trump. Previous administrations, both Republican and Democrat, have pursued policies that widened deficits. Demographic changes, such as the retirement of the baby-boom generation, are further straining Social Security and Medicare.
Trump's strategy of relying on economic growth to offset fiscal challenges faces skepticism. Economists doubt that growth alone can bridge the fiscal gap, especially as investment in technology sectors keeps interest rates high, increasing borrowing costs.
The gap between promised and realized spending cuts has heightened concerns about the effectiveness of fiscal measures. The Government Accountability Office has questioned the validity of reported savings, which fell short of initial targets.
Background
The U.S. fiscal challenges have been building over decades, with both Republican and Democratic administrations contributing to the widening deficits through various policies. The retirement of the baby-boom generation adds further strain on entitlement programs like Social Security and Medicare.
The U.S. entered Trump's second term with an already challenging fiscal outlook, and the administration's policies have exacerbated these pressures. As interest costs consume more federal resources, the pressure for decisive action is likely to grow.
