Uncle Sam is about to borrow money at a price it hasn’t paid in a quarter century. The US Treasury is set to auction $25 billion in 30-year bonds on August 13, with when-issued yields trading around 5.23% to 5.24%. That would mark the highest interest rate on newly issued 30-year government debt since 2001.
A steady climb past 5%
Earlier auctions in 2026 already broke through meaningful psychological barriers. The May auction cleared at a yield of 5.046%, and July followed at 5.058%. Both marked the first time 30-year bond yields topped 5% since 2007.
Now the market is pricing in yields above 5.2%, representing yet another leg higher. The drivers are familiar but persistent. Sustained inflation concerns continue to gnaw at investor confidence in long-duration government debt. The sheer scale of federal borrowing, with the national debt requiring ever-larger auctions to service, has added structural upward pressure on yields.
What 5.2% actually costs
