$500 I Bond with 0.90% Fixed Rate Purchased September 2023

 Jan
1
Feb
1
Mar
1
Infla
tion
Rate
Com
posite
Rate
Apr
1
May
1
Jun
1
Jul
1
Aug
1
Sep
1
Infla
tion
Rate
Com
posite
Rate
Oct
1
Nov
1
Dec
1
2023 500.001.69%4.30%501.80503.60505.402023
2024507.20509.00510.801.97%4.86%512.80515.00517.00519.00521.20523.201.48%3.87%524.80526.60528.202024
2025530.00531.60533.400.95%2.81%534.60535.80537.20538.40539.60540.80

From $500.00 to $540.80 over 2.0 years = 3.96% average annual increase compounded semi-annually.

Generated  11/01/24  13:13