The US Department of the Treasury announced that the interest rate for the new I series bonds for the next six months will be 4.26%.

From May 1st to October 31st, newly purchased I bonds will pay an annual interest rate of 4.26%, higher than the 4.03% yield that was in effect until April 30th. According to the Ministry of Finance, the new rate includes a variable rate portion of 3.34% based on inflation data and a fixed rate portion of 0.90%, resulting in a compound rate of 4.26% after rounding. The 0.90% fixed rate is consistent with the level announced in October 2025. During periods of soaring inflation, the interest rate on I bonds reached a historic high of 9.62% in May 2022, prompting investors to flock to this government-guaranteed, virtually risk-free asset.