U.S. Treasury Yields Exceed 5% as Interest Costs Hit $1 Trillion

U.S. government borrowing costs have reached decade-highs, with the benchmark 10-year Treasury yield exceeding 5%. Net interest costs for the first 11 months of fiscal year 2026 are estimated at $1.05 trillion, while the Congressional Budget Office projects federal debt held by the public will reach approximately 101% of GDP in fiscal 2026.

The surge in yields has sparked a debate over the stability of U.S. finances. Some experts warn of a potential debt spiral where rising interest expenses force the government to borrow more just to cover those costs. Other market analysts argue that a fiscal crisis is not imminent, citing the global role of the U.S. dollar and a resilient economy where nominal GDP growth currently outpaces the average interest rate on debt.

Analysts from TD Securities and BMO Capital Markets suggest the yield increase is driven by strong economic performance, inflation concerns, and Federal Reserve rate expectations rather than fiscal instability alone. L&G Asset Management Limited characterized fears of an imminent crisis as exaggerated.