The total public debt of the United States surpassed $40 trillion for the first time, according to daily treasury figures released by the US Department of the Treasury on Wednesday, triggering fresh warnings from financial observers about a growing fiscal crisis.
Data from the latest Treasury statement showed that total outstanding federal debt reached $40.047 trillion on Tuesday. Debt held by the public, consisting of Treasury securities bought by private investors and institutions, accounted for $32.266 trillion of the total, while intragovernmental obligations made up the remaining $7.782 trillion.
The Reuters news agency reported that the rapid expansion of federal liabilities stems from government spending on Social Security programs and debt interest payments expanding much faster than tax receipts, which have been diminished by tax cuts.
Non-partisan monitoring organizations that track American public finances had anticipated the $40 trillion threshold for several weeks. Analysts warned that a broader debt crisis could develop if lawmakers fail to alter the fiscal trajectory using tax increases, spending reductions, or a combination of both measures.
Rapid Expansion Under Recent Administrations
Total liabilities owed by the US federal government have more than doubled in less than ten years. When Donald Trump was sworn in for his first term as president in January 2017, total national debt stood at $19.95 trillion.
Roughly one third of the sub-decade increase occurred during a two-year surge in federal borrowing to finance emergency relief measures during the COVID-19 pandemic under both the Trump administration and the subsequent administration of Joe Biden.
The remainder of the growth reflects policy decisions enacted by both leaders, alongside structural imbalances between annual government revenue and federal expenditures.
During his first four-year presidential term, Trump oversaw a $7.8 trillion rise in national debt, with more than half of that accumulation occurring during his final nine months in office as pandemic spending accelerated. Since returning to the White House for his second term in January 2025, debt has grown by an additional $3.8 trillion, bringing total debt expansion across his two terms to $11.6 trillion.
Under Biden, federal debt expanded by $8.4 trillion during a period marked by pandemic recovery programs, major infrastructure spending legislation, clean energy subsidies, and other federal policy initiatives.
The Committee for a Responsible Federal Budget, an independent fiscal policy organization in Washington that evaluates government spending, estimated that policy choices under both Trump and Biden significantly worsened the federal debt outlook compared to projections under baseline law when each president took office.
Margaret Spellings, chief executive officer of the Washington think tank Bipartisan Policy Center, said that the grim milestone was another reminder that the time had passed to address a fundamental mismatch in federal finances. She noted that federal programs spend far more than the government collects, with the largest budget items operating on autopilot. Spellings added that federal debt is already raising the cost of living, curbing investments, and threatening long-term economic prospects.
Bond Market Strains and Yield Interventions
Unease over American fiscal health has increasingly spread to sovereign debt markets, where foreign creditors have shown growing caution. Yields on long-term US debt reached their highest levels in nearly two decades on Tuesday, coming shortly after a $25 billion auction of 30-year Treasury bonds cleared at its highest yield since 2021.
Investors have demanded higher yields to compensate for taking on massive issuances of federal debt. The term premium on 10-year Treasury bonds, which measures the extra yield investors require to hold long-term debt rather than short-term paper, rose this week to its highest point in more than 12 years.
On Wednesday, US Treasury Secretary Scott Bessent intervened to stabilize debt markets and cap long-term borrowing costs. Bessent announced that the Treasury would double the size of its bond buyback operations for securities maturing in 10 to 30 years, raising buybacks to at least $4 billion per transaction.
Demand from international buyers, who hold nearly one third of all outstanding US sovereign debt, has fallen over the past year, according to John Canavan of Oxford Economics, a global forecasting firm. Canavan noted that reduced foreign participation leaves a larger volume of bonds to be absorbed by price-sensitive domestic investors, increasing volatility across financial markets.
Mounting Monthly Deficits and Tariff Impacts
The debt surge comes as the federal budget deficit continues to broaden. Last week, the Treasury Department reported a monthly budget deficit of $432 billion for July, marking the fourth-largest single-month deficit in US history.
Net customs revenues dropped into negative territory for the third consecutive month due to large tariff refunds, while mandatory outlays for Social Security and Medicare continued their upward trajectory.
During the first ten months of fiscal year 2026, the cumulative federal budget deficit has already surpassed the total deficit recorded for the entire 2025 fiscal year, despite two full months remaining in the current fiscal period.
Debt Outpaces Gross Domestic Product
Total US federal debt now exceeds annual American gross domestic product by approximately 20%. The sharp rise in the national debt-to-GDP ratio during the 21st century was driven primarily by federal responses to the 2007-2009 global financial crisis and the 2020 economic disruptions.
Further fiscal expansion is anticipated under recent legislative actions. The Congressional Budget Office, a non-partisan agency that provides financial analysis to Congress, projected that the One Big Beautiful Bill Act, the signature legislative package of Trump's second term, will add another $4.7 trillion to the debt.
Although Trump has framed his second presidential administration as an era of fiscal restraint, initiating workforce reductions across federal agencies, analysts note that these cuts focus primarily on discretionary spending. Discretionary programs account for the smallest share of the overall federal budget.
The US government spends approximately $7 trillion annually, with mandatory entitlement programs making up roughly 60% of total outlays. These mandatory obligations include Social Security, Medicare, Medicaid, and healthcare services for military veterans.
Surging Interest Payments Overtake Federal Programs
The escalating cost of servicing the federal debt has emerged as one of the most pressing fiscal challenges for the United States. Net interest payments on government borrowing have reached approximately $1.1 trillion annually, compounding as debt levels expand and interest rates remain elevated.
In fiscal year 2025, debt service expenditures surpassed total funding for the Department of Defense for the first time in history. Over the first ten months of fiscal year 2026, interest payments escalated further, overtaking Medicare to become the second-largest line item in the federal budget, behind only Social Security.
Demographic shifts are placing additional pressure on public coffers. The federal government is spending record sums to fund retirement benefits and healthcare for the aging baby boomer generation, straining Social Security and Medicare trust funds while payroll tax revenues fail to keep pace with total spending commitments.
Interest payments calculated on a rolling 12-month basis have consistently exceeded $1 trillion since early 2024, representing more than double the amount paid in 2020. With Treasury bond yields remaining elevated and new debt issuance continuing to expand, federal interest costs are projected to grow further in the coming years.
