$500 I Bond with 0.10% Fixed Rate Purchased May 2016

 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
2016 500.000.08%0.26%500.20500.20500.40500.40500.60500.601.38%2.86%501.802016
2017503.00504.20505.40506.60507.800.98%2.06%508.60509.60510.40511.20512.20513.001.24%2.58%514.002017
2018515.20516.20517.40518.60519.601.11%2.32%520.60521.60522.60523.60524.60525.60

From $500.00 to $525.60 over 2.5 years = 2.01% average annual increase compounded semi-annually.

Generated  05/01/18  10:11