The CPI-U value for May increased slightly over April's value of 213.240 to 213.856. The next I-bond rate is based on changes between March and September, so we still have a ways to go before making any predictions about the rate in November.
| Mar. | Apr. | May. | Jun. | Jul. | Aug. | Sep. |
| 212.709 | 213.240 | 213.856 |
