30-year US Treasury yield hits highest level in nearly 20 years

The last time the 30-year US Treasury yield was this high, the iPhone had just gone on sale and the word “subprime” was only beginning to enter the public vocabulary. On August 17, 2026, the yield on the benchmark long bond climbed to approximately 5.31%, its highest reading since July 2007, a milestone that carries real consequences for anyone who borrows money, holds stocks, or pays taxes. To put that number in context: for most of the decade following the 2008 financial crisis, the 30-year yield sat well below 3%. The move to 5.31% is not a blip. It is a structural repricing of what it costs the US government to borrow for a generation. How we got here The climb did not happen overnight. Yields crossed back above 5% earlier in 2026 and have stayed there for the longest continuous stretch since before the financial crisis. A May 2026 spike briefly pushed the yield to near 5.20%, and a July 9 auction of new 30-year bonds was awarded at 5.058%, itself the highest auction yield since 2007, with strong demand from investors nonetheless. Prior to the August 17 spike, the constant maturity yield had held steady within the 5.21% to 5.25% range. Three forces are doing most of the work. F...