$500 I Bond with 0.30% Fixed Rate Purchased January 2010

 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
2010500.001.53%3.36%501.40502.80504.20505.60507.00508.400.77%1.84%509.20510.00510.80511.60512.202010
2011513.000.37%1.04%513.40513.80514.40514.80515.20515.602.30%4.91%517.60519.80521.80524.00526.202011
2012528.201.53%3.36%529.60531.20532.60534.00535.60537.001.10%2.50%538.20539.20540.40541.40542.602012
2013543.800.88%2.06%544.80545.60546.60547.60548.40549.400.59%1.48%550.00550.80551.40552.20552.802013
2014553.400.59%1.48%554.00554.80555.40556.20556.80557.400.92%2.14%558.40559.40560.40561.40562.402014
2015563.400.74%1.78%564.20565.00566.00566.80567.60568.40-0.80%0.00%568.40568.40568.40568.40568.402015
2016568.400.77%1.84%569.20570.20571.00571.80572.80573.600.08%0.46%573.80574.00574.20574.40574.602016
2017575.001.38%3.06%576.40578.00579.40580.80582.40583.800.98%2.26%584.80586.00587.00588.20589.202017
2018590.401.24%2.78%591.80593.20594.40595.80597.20598.601.11%2.52%599.80601.20602.40603.60604.802018
2019606.20

From $500.00 to $606.20 over 9.0 years = 2.15% average annual increase compounded semi-annually.

Generated  05/01/18  10:10