$25 I Bond with 0.00% Fixed Rate Purchased July 2015

 Jan
1
Infla
tion
Rate
Com
posite
Rate
Feb
1
Mar
1
Apr
1
May
1
Jun
1
Jul
1
Infla
tion
Rate
Com
posite
Rate
Aug
1
Sep
1
Oct
1
Nov
1
Dec
1
2015 25.00-0.80%0.00%25.0025.0025.0025.0025.002015
201625.000.77%1.54%25.0325.0625.1025.1325.1625.190.08%0.16%25.1925.2025.2025.2025.212016
201725.211.38%2.76%25.2725.3325.3825.4425.5025.560.98%1.96%25.6025.6425.6825.7325.772017
201825.81

From $25.00 to $25.81 over 2.5 years = 1.28% average annual increase compounded semi-annually.

Generated  05/01/17  10:11