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

 Jan
1
Feb
1
Mar
1
Apr
1
Infla
tion
Rate
Com
posite
Rate
May
1
Jun
1
Jul
1
Aug
1
Sep
1
Oct
1
Infla
tion
Rate
Com
posite
Rate
Nov
1
Dec
1
2018 500.001.11%2.52%501.00502.002018
2019503.20504.20505.20506.401.16%2.62%507.40508.60509.80510.80512.00513.000.70%1.70%513.80514.402019
2020515.20516.00516.60517.401.01%2.32%518.40519.40520.40521.40522.40523.400.53%1.36%524.00524.602020
2021525.20525.80526.40527.000.84%1.98%527.80528.80529.60530.40531.40532.201.77%3.85%533.80535.602021
2022537.20539.00540.80542.403.56%7.43%545.80549.00552.40555.80559.20562.604.81%9.93%567.20571.802022
2023576.40581.00585.80590.603.24%6.79%593.80597.20600.60603.80607.20610.601.69%3.69%612.40614.402023
2024616.20618.00620.00621.801.97%4.25%624.00626.20628.40630.60632.80635.001.48%3.26%636.80638.402024
2025640.20641.80643.60645.400.95%2.20%646.60647.80649.00650.20651.40652.401.43%3.16%654.20655.802025
2026657.60659.20661.00662.80

From $500.00 to $662.80 over 7.5 years = 3.79% average annual increase compounded semi-annually.

Generated  05/01/25  10:59