CPI-U for February increased again to 221.309, up from January’s value of 220.223. With one month remaining before the inflation-linked portion of the May I Bond is known, the increase is already higher than it was in the previous semi-annual change used for the November I Bond rate.
| Sept. | Oct. | Nov. | Dec. | Jan. | Feb. | Mar. |
| 218.439 | 218.711 | 218.803 | 219.179 | 220.223 | 221.309 |
