I-Bonds, 5/1/24 - 10/31/24 Apr 30, 2024 17:23:28 GMT Quote Select PostDeselect PostLink to PostBack to Top Post by yogibearbull on Apr 30, 2024 17:23:28 GMT Early announcement on 4/30/24 for I-Bond rates 5/1/24 - 10/31/24.Fixed/base rate 1.30% (same)Variable rate (semiannual) 1.48%Composite rate = [0.0130 + (2 x 0.0148) + (0.0130 x 0.0148)] = 4.28%