The U.S. is now spending $1.38 trillion annually just on interest payments for federal debt—that's 4.2% of GDP, the highest since 1997.
Five years ago, this figure was half that size. Interest costs have doubled in a remarkably short window, climbing at an average rate of 24% per year.
In the first nine months of fiscal 2026 alone, interest expense hit $827 billion, up $78 billion year-over-year and already a record for this period.
This isn't abstract budget math anymore. It's real money being pulled out of the economy to service debt, and it's growing faster than tax revenue in many years. The compounding effect of higher rates on a larger debt pile is now fully visible.
For markets, this matters. It crowds out other spending, puts pressure on future fiscal flexibility, and keeps the Fed's hands partially tied. It also explains why bond vigilantes are paying closer attention to Treasury auctions and why deficit hawks are getting louder.
The cost of carrying U.S. debt has never been this high. And with rates still elevated and deficits sticky, this trend isn't reversing anytime soon.
Five years ago, this figure was half that size. Interest costs have doubled in a remarkably short window, climbing at an average rate of 24% per year.
In the first nine months of fiscal 2026 alone, interest expense hit $827 billion, up $78 billion year-over-year and already a record for this period.
This isn't abstract budget math anymore. It's real money being pulled out of the economy to service debt, and it's growing faster than tax revenue in many years. The compounding effect of higher rates on a larger debt pile is now fully visible.
For markets, this matters. It crowds out other spending, puts pressure on future fiscal flexibility, and keeps the Fed's hands partially tied. It also explains why bond vigilantes are paying closer attention to Treasury auctions and why deficit hawks are getting louder.
The cost of carrying U.S. debt has never been this high. And with rates still elevated and deficits sticky, this trend isn't reversing anytime soon.