Federal debt held by the public has now exceeded 100 percent of U.S. gross domestic product, marking a symbolic fiscal milestone that economists and budget watchdogs have warned about for years. Yet despite growing concern over borrowing costs and long-term deficits, lawmakers continue advancing major spending plans with little sign of bipartisan restraint.
The development has renewed debate over whether the United States is approaching an unsustainable fiscal path or whether markets and policymakers have simply grown accustomed to historically high debt levels. According to the Committee for a Responsible Federal Budget, the ratio of publicly held debt to GDP crossed the 100 percent threshold in March.
The milestone briefly triggered warnings from fiscal policy groups and economists, though it did not alter the direction of government spending debates in Washington. Within days, the Senate continued discussions on a $72 billion immigration enforcement package, while Defense Secretary Pete Hegseth defended what the White House described as the largest Pentagon budget request in U.S. history.
Michael Peterson, chief executive of the Peterson Foundation, told The New York Times that the focus on 100 percent was largely symbolic because debt levels do not suddenly become unmanageable at a specific threshold. “Ninety-nine is a bad number. One hundred one is worse than 100,” he said.
Rising Borrowing Costs Intensify Concerns Over Long-Term Debt Growth
Federal debt expanded sharply after the 2007-2008 financial crisis and the Covid-19 recession, alongside rising healthcare and retirement costs linked to an aging population. Repeated tax cuts without matching spending reductions also contributed to the increase, according to economists cited in the report.
The Congressional Budget Office projects publicly held debt could reach 175 percent of GDP by 2056 if current fiscal trends continue. Unlike the post-World War II period, when strong growth and occasional budget surpluses reduced debt ratios over time, there is currently little indication of sustained decline.
Interest payments are also becoming a larger burden. According to the article, net federal interest payments now exceed the U.S. defense budget. At the same time, Treasury bond yields have climbed sharply from pandemic-era lows. Thirty-year Treasury yields recently reached 5.12 percent, their highest level since 2007.
Ellen Zentner, chief economic strategist at Morgan Stanley Wealth Management, told The New York Times that clients frequently ask whether U.S. debt levels are sustainable. “We are not,” she said.
Some economists point to Japan, whose government debt exceeds 200 percent of GDP, as evidence that advanced economies can continue functioning with high debt levels. Yet the article notes that Japan relies mostly on domestic investors, while the United States depends more heavily on foreign financing.
Public Concern Grows While Political Action Remains Limited
Polling suggests Americans are increasingly uneasy about deficits and government spending. According to Gallup data cited in the report, roughly half of Americans in March said they worried “a great deal” about federal spending and deficits, placing the issue alongside inflation and the broader economy.
Economists interviewed in the article said concern alone has not translated into meaningful political action. Benjamin Larin of Sweden’s Jonkoping University argued that debt ratios remain too abstract for many voters compared with issues that affect daily life more directly.
Harvard economist Jason Furman acknowledged that many experts once expected debt at current levels to trigger severe economic consequences, including sharply higher interest rates or financial instability. Yet such outcomes have not fully materialized.
That relative stability has reduced pressure on elected officials to pursue politically difficult measures such as tax increases or spending cuts. According to the report, even Elon Musk’s deficit commission produced only a small fraction of the savings originally targeted. Fiscal policy advocates continue calling for leadership from Congress and the White House, though there is little indication that a broad agreement on deficit reduction is close.
