$100 I Bond with 3.30% Fixed Rate Purchased March 1999

 Jan
1
Feb
1
Mar
1
Infla
tion
Rate
Com
posite
Rate
Apr
1
May
1
Jun
1
Jul
1
Aug
1
Sep
1
Infla
tion
Rate
Com
posite
Rate
Oct
1
Nov
1
Dec
1
1999 100.000.86%5.05%100.40100.84101.24101.68102.08102.520.86%5.05%102.96103.36103.801999
2000104.24104.68105.121.76%6.88%105.72106.32106.92107.52108.12108.721.91%7.18%109.36110.00110.642000
2001111.32111.96112.641.52%6.39%113.24113.84114.44115.04115.64116.241.44%6.23%116.84117.44118.042001
2002118.64119.24119.881.19%5.72%120.44121.00121.60122.16122.72123.320.28%3.87%123.72124.12124.522002
2003124.92125.32125.721.23%5.80%126.32126.92127.52128.12128.76129.361.77%6.90%130.08130.84131.562003
2004132.32133.08133.840.54%4.40%134.32134.80135.32135.80136.28136.801.19%5.72%137.44138.08138.762004
2005139.40140.04140.721.33%6.00%141.40142.12142.80143.52144.24144.961.79%6.94%145.80146.60147.442005
2006148.28149.12150.002.85%9.09%151.12152.24153.36154.52155.68156.800.50%4.32%157.36157.92158.482006
2007159.04159.60160.201.55%6.45%161.04161.92162.76163.64164.48165.361.21%5.76%166.16166.92167.722007
2008168.52169.32170.121.53%6.41%171.00171.92172.84173.72174.64175.562.42%8.22%176.76177.92179.122008
2009180.32181.56182.762.46%8.30%184.00185.24186.52187.80189.04190.36-2.78%0.00%190.36190.36190.362009
2010190.36190.36190.361.53%6.41%191.36192.36193.40194.40195.44196.480.77%4.87%197.28198.08198.842010
2011199.64200.44201.280.37%4.05%201.96202.64203.32204.00204.68205.362.30%7.98%206.72208.04209.402011
2012210.80212.16213.561.53%6.41%214.68215.80216.96218.08219.24220.401.10%5.54%221.40222.40223.442012
2013224.44225.48226.520.88%5.09%227.48228.44229.40230.36231.32232.280.59%4.50%233.16234.00234.882013
2014235.76236.64237.520.59%4.50%238.40239.28240.16241.08241.96242.880.92%5.17%243.92244.96246.002014
2015247.04248.12249.160.74%4.80%250.16251.12252.12253.12254.12255.12-0.80%1.67%255.48255.84256.202015
2016256.52256.88257.240.77%4.87%258.28259.32260.36261.40262.44263.520.08%3.46%264.28265.04265.802016
2017266.56267.32268.081.38%6.11%269.44270.80272.16273.52274.88276.280.98%5.29%277.48278.68279.922017
2018281.12282.36283.601.24%5.82%284.96286.32287.68289.08290.48291.841.11%5.56%293.16294.52295.882018
2019297.24298.60299.961.16%5.66%301.36302.76304.16305.60307.00308.440.70%4.72%309.64310.84312.042019
2020313.28314.48315.721.01%5.35%317.12318.52319.92321.32322.76324.160.53%4.38%325.32326.52327.682020
2021328.88330.08331.240.84%5.01%332.60334.00335.36336.76338.16339.521.77%6.90%341.44343.40345.322021
2022347.28349.24351.243.56%10.54%354.24357.32360.36363.48366.60369.764.81%13.08%373.68377.64381.642022
2023385.72389.80393.963.24%9.89%397.16400.36403.60406.84410.12413.441.69%6.74%415.72418.04420.362023
2024422.68425.00427.361.97%7.31%429.92432.52435.08437.72440.32443.001.48%6.31%445.28447.60449.922024
2025452.28454.60456.960.95%5.23%458.92460.92462.88464.88466.88468.921.43%6.21%471.32473.72476.162025
2026478.56481.04483.481.56%6.47%486.04488.64491.24493.84496.48499.12

From $100.00 to $499.12 over 27.5 years = 5.93% average annual increase compounded semi-annually.

Generated  11/04/25  09:10