US 30-Year Borrowing Rate Hits 5.444%, Highest Since 2004

The US 30-year Treasury yield, the interest rate Washington pays to borrow for 30 years, rose to 5.444% on September 24, 2026, its highest since 2004, as investors sold government bonds globally. That makes US debt more expensive and tightens credit worldwide. The question is how long investors will demand higher returns to hold long-term debt.