$10,000 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 10,0001.11%2.52%10,02010,04010,06410,08410,10410,1281.16%2.62%10,1482018
201910,17210,19610,21610,24010,2600.70%1.70%10,27610,28810,30410,32010,33210,3481.01%2.32%10,3682019
202010,38810,40810,42810,44810,4680.53%1.36%10,48010,49210,50410,51610,52810,5400.84%1.98%10,5562020
202110,57610,59210,60810,62810,6441.77%3.85%10,67610,71210,74410,78010,81610,8483.56%7.43%10,9162021
202210,98011,04811,11611,18411,2524.81%9.93%11,34411,43611,52811,62011,71611,812

From $10,000 to $11,812 over 4.5 years = 3.74% average annual increase compounded semi-annually.

Generated  05/02/22  10:40