$500 I Bond with 0.00% Fixed Rate Purchased February 2021

 Jan
1
Feb
1
Infla
tion
Rate
Com
posite
Rate
Mar
1
Apr
1
May
1
Jun
1
Jul
1
Aug
1
Infla
tion
Rate
Com
posite
Rate
Sep
1
Oct
1
Nov
1
Dec
1
2021 500.000.84%1.68%500.60501.40502.00502.80503.40504.201.77%3.54%505.60507.20508.60510.202021
2022511.60513.203.56%7.12%516.20519.20522.20525.40528.40531.404.81%9.62%535.60539.80544.00548.402022
2023552.60557.003.24%6.48%560.00563.00566.00569.00572.00575.001.69%3.38%576.60578.20579.80581.402023
2024583.00584.801.97%3.94%586.80588.60590.60592.40594.40596.401.48%2.96%597.80599.40600.80602.202024
2025603.80605.200.95%1.90%606.20607.20608.00609.00610.00611.001.43%2.86%612.40613.80615.40616.802025
2026618.20619.801.56%3.12%621.40623.00624.60626.20627.80629.40

From $500.00 to $629.40 over 5.5 years = 4.23% average annual increase compounded semi-annually.

Generated  11/04/25  09:11