Key Takeaways:
The US national debt crossed $40 trillion for the first time, forcing Washington and corporate America to compete for capital at the highest borrowing costs in nearly two decades.
The US national debt crossed $40 trillion for the first time, as long-term Treasury yields climbed to their highest since 2007 and a private-sector artificial-intelligence boom added fresh demand for capital. Gross federal debt, including money owed to government accounts, rose about $3 trillion in the past year, while the roughly $32 trillion held by the public more directly reflects borrowing from investors and other outside holders.
"Rising government borrowing costs can feed into mortgage rates and eventually affect auto loans, business financing and bonds used to fund projects such as school construction," said Brett Loper, executive vice president for policy at the Peter G. Peterson Foundation.
The federal government is projected to spend more than $1 trillion on net interest in 2026, according to Congressional Budget Office projections. During the first 10 months of the fiscal year, Washington had already spent $963 billion on interest, about $200 billion more than on the military in the same period. The Treasury is expected to refinance about $9.7 trillion of maturing debt this fiscal year while financing a deficit projected at roughly $2.1 trillion.
The milestone lands as big technology companies turn to bond markets to fund AI infrastructure, with issuance expected to roughly double in 2026 and Goldman Sachs estimating debt could finance more than one-third of their AI spending by 2027. That competition for capital, at a time when the CBO projects debt held by the public reaching 120 percent of GDP by 2036, sets up a fiscal reckoning that economists say will require slower spending growth and higher revenue.
The fiscal challenge is compounded by the government's need to refinance enormous amounts of existing debt at potentially higher rates, while the larger interest bill itself feeds future deficits. The CBO projects average annual deficits of about $2.4 trillion through 2036, with debt held by the public eventually reaching 120 percent of GDP, above the previous post-World War II record.
The pressure arrives as America's private economy demands unprecedented capital for AI. Nine major technology companies have already spent around $600 billion on capital projects over the past year, while a Wall Street Journal analysis identified another roughly $3 trillion in future commitments, much of it associated with AI infrastructure, that has not yet appeared on their balance sheets. Nvidia is working with BlackRock, Goldman Sachs, KKR and other financial firms on plans to mobilize more than $500 billion for AI infrastructure, and earlier this month announced a $500 billion partnership with BlackRock, Blackstone and Goldman Sachs to help customers fund their rollout.
The bond market is already straining to absorb the wave of AI debt. At Camp Kotok, an invite-only gathering of Wall Street professionals in Maine, attendees debated whether the trillions in AI spending will yield returns, with longtime tech investor Barry Norton telling the crowd he could not answer whether the investment would pay off. "I don't know that yet. I worry about that," he said. Peter Boockvar, chief investment officer at OnePoint BFG Wealth Partners, said the level of spending "has gotten so extraordinary that we have no choice but to jaw drop at it and wonder how all of this is going to turn out."
The debt problem extends beyond borrowing costs. Social Security's retirement trust fund is projected to be depleted in late 2032, while Medicare's hospital insurance trust fund is expected to run short in the second quarter of 2033. Trump's tax-and-spending legislation is projected to add trillions of dollars to federal deficits over the coming decade, and the White House has sought tens of billions in additional funding connected to the war with Iran.
Efforts to restrain spending have produced limited results. Elon Musk's Department of Government Efficiency, or DOGE, began with an ambition to cut as much as $2 trillion from federal spending, but its final public tally claimed approximately $215 billion in savings, only around one-tenth of that target. A federal audit released this month found billions of dollars in unsupported or inaccurate savings claims, including $27.4 billion associated with contracts that remained active.
The last time the country's finances drew this kind of scrutiny was in 2011, when Standard & Poor's downgraded US Treasury debt. At Camp Kotok that year, attendees whispered that the downgrade was only the beginning and that the country's finances would get much worse — a prediction that has since played out as gross debt more than doubled from about $19 trillion when Trump pledged in 2016 to eliminate it within eight years.
For ordinary Americans, the national debt is not a personal bill they must directly repay. Its consequences, however, increasingly appear through mortgage rates, business financing, taxes, government benefits and inflation. As the debt burden grows while both Washington and corporate America compete for capital, the fiscal challenge is becoming an important question not only for economic policy but also for America's future prosperity and global power.
This article is for informational purposes only and does not constitute investment advice.
