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

 Jan
1
Feb
1
Mar
1
Apr
1
Infla
tion
Rate
Com
posite
Rate
May
1
Jun
1
Jul
1
Aug
1
Sep
1
Oct
1
Infla
tion
Rate
Com
posite
Rate
Nov
1
Dec
1
1999 100.000.86%5.05%100.40100.841999
2000101.24101.68102.08102.521.76%6.88%103.08103.68104.28104.84105.44106.041.91%7.18%106.68107.282000
2001107.92108.56109.20109.841.52%6.39%110.40111.00111.60112.16112.76113.361.44%6.23%113.96114.522001
2002115.12115.72116.28116.881.19%5.72%117.44118.00118.52119.08119.64120.240.28%3.87%120.64121.002002
2003121.40121.80122.16122.561.23%5.80%123.16123.72124.32124.92125.52126.121.77%6.90%126.84127.562003
2004128.28129.00129.72130.480.54%4.40%130.96131.44131.92132.40132.88133.361.19%5.72%134.00134.602004
2005135.24135.88136.52137.161.33%6.00%137.84138.52139.20139.88140.60141.281.79%6.94%142.08142.882005
2006143.72144.52145.36146.202.85%9.09%147.28148.40149.48150.60151.72152.840.50%4.32%153.40153.922006
2007154.48155.04155.60156.161.55%6.45%157.00157.84158.64159.48160.36161.201.21%5.76%161.96162.722007
2008163.52164.28165.04165.841.53%6.41%166.72167.60168.48169.36170.24171.162.42%8.22%172.32173.482008
2009174.64175.80177.00178.202.46%8.30%179.40180.64181.88183.08184.36185.60-2.78%0.00%185.60185.602009
2010185.60185.60185.60185.601.53%6.41%186.56187.56188.56189.56190.56191.560.77%4.87%192.32193.122010
2011193.88194.64195.44196.240.37%4.05%196.88197.56198.20198.88199.56200.202.30%7.98%201.52202.842011
2012204.16205.48206.84208.201.53%6.41%209.28210.40211.52212.64213.76214.881.10%5.54%215.88216.842012
2013217.84218.84219.84220.840.88%5.09%221.76222.68223.64224.56225.52226.480.59%4.50%227.32228.162013
2014229.00229.88230.72231.560.59%4.50%232.44233.28234.16235.04235.88236.760.92%5.17%237.76238.802014
2015239.80240.84241.84242.880.74%4.80%243.84244.80245.76246.76247.72248.72-0.80%1.67%249.08249.402015
2016249.76250.12250.44250.800.77%4.87%251.80252.80253.84254.84255.88256.920.08%3.46%257.64258.402016
2017259.12259.88260.60261.361.38%6.11%262.68264.00265.32266.64268.00269.360.98%5.29%270.52271.722017
2018272.88274.08275.28276.481.24%5.82%277.80279.12280.48281.80283.16284.521.11%5.56%285.84287.122018
2019288.44289.76291.08292.441.16%5.66%293.80295.16296.56297.92299.32300.720.70%4.72%301.88303.082019
2020304.24305.44306.64307.801.01%5.35%309.16310.52311.88313.28314.64316.040.53%4.38%317.20318.322020
2021319.48320.64321.80322.960.84%5.01%324.28325.64327.00328.32329.68331.041.77%6.90%332.92334.802021
2022336.72338.60340.52342.483.56%10.54%345.44348.40351.40354.40357.44360.524.81%13.08%364.36368.202022
2023372.12376.08380.08384.083.24%9.89%387.20390.32393.48396.64399.84403.081.69%6.74%405.32407.562023
2024409.80412.08414.36416.681.97%7.31%419.20421.68424.24426.76429.32431.921.48%6.31%434.16436.402024
2025438.68440.96443.24445.560.95%5.23%447.48449.40451.36453.28455.24457.201.43%6.21%459.52461.882025
2026464.24466.60469.00471.401.56%6.47%473.92476.44478.96481.52484.08486.641.67%6.70%489.32492.002026
2027494.72497.44500.20502.96

From $100.00 to $502.96 over 27.5 years = 5.96% average annual increase compounded semi-annually.

Generated  05/01/26  08:02