Interest on the national debt, which is the annual charge taxpayers cover simply to carry the government's outstanding borrowing, has reached nearly $1.2 trillion this year. That makes it the largest single line item in the federal budget after Social Security and Medicare. Rep. Thomas Massie (R-Ky.) put the household arithmetic plainly in a post on X on August 19: $4,000 per American per year, or $16,000 for a family of four, paid out for nothing but interest.
Massie framed the figures as the direct result of fiscal policies he voted against during his time in Congress. He lost his Kentucky primary in May to Ed Gallrein, a former Navy SEAL backed by President Donald Trump, after Trump campaigned against him for opposing the president's tax legislation and other party priorities.
The trajectory behind the post has been accelerating for years. U.S. debt crossed $40.05 trillion this week. A decade ago it stood at $19.4 trillion. July's monthly deficit came in at $432.3 billion, the largest single-month shortfall since March 2021, pushing the year-to-date gap toward $1.8 trillion.
What rising yields are doing to the bill
The 30-year Treasury yield, the rate the government pays on its longest-dated bonds, climbed to a 19-year high this week. When that rate rises, every new dollar of debt the government issues costs more to carry. A large and growing principal balance combined with a rising yield is the mechanism that turns a debt problem into an interest-payment problem.
The Treasury Department responded by doubling its long-dated bond buybacks, purchases of its own outstanding securities designed to support prices and keep yields from climbing further.
Economist Mohamed El-Erian called the numbers "stunning." Interest payments now consume 20% of federal tax revenue, he noted, even as the government runs a 6% deficit during a period of historically low unemployment. Large deficits alongside a tight labor market are unusual. Tax receipts tend to rise when employment is high. They have not been enough.
Former UN Ambassador Nikki Haley warned separately that Social Security could go bankrupt within five years, with 75 million Americans receiving benefits at risk, and called the debt situation "past a crisis situation."
The year-to-date deficit is already heading toward $1.8 trillion.