$500 I Bond with 0.30% Fixed Rate Purchased May 2018

 Jan
1
Feb
1
Mar
1
Apr
1
May
1
Infla
tion
Rate
Com
posite
Rate
Jun
1
Jul
1
Aug
1
Sep
1
Oct
1
Nov
1
Infla
tion
Rate
Com
posite
Rate
Dec
1
2018 500.001.11%2.52%501.00502.00503.20504.20505.20506.401.16%2.62%507.402018
2019508.60509.80510.80512.00513.000.70%1.70%513.80514.40515.20516.00516.60517.401.01%2.32%518.402019
2020519.40520.40521.40522.40523.400.53%1.36%524.00524.60525.20525.80526.40527.000.84%1.98%527.802020
2021528.80529.60530.40531.40532.201.77%3.85%533.80535.60537.20539.00540.80542.403.56%7.43%545.802021
2022549.00552.40555.80559.20562.604.81%9.93%567.20571.80576.40581.00585.80590.603.24%6.79%593.802022
2023597.20600.60603.80607.20610.601.69%3.69%612.40614.40616.20618.00620.00621.801.97%4.25%624.002023
2024626.20628.40630.60632.80635.001.48%3.26%636.80638.40640.20641.80643.60645.400.95%2.20%646.602024
2025647.80649.00650.20651.40652.401.43%3.16%654.20655.80657.60659.20661.00662.801.56%3.42%664.602025
2026666.60668.40670.40672.20674.20

From $500.00 to $674.20 over 8.0 years = 3.77% average annual increase compounded semi-annually.

Generated  11/04/25  09:11