$500 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
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1999 500.000.86%5.05%502.00504.201999
2000506.20508.40510.40512.601.76%6.88%515.40518.40521.40524.20527.20530.201.91%7.18%533.40536.402000
2001539.60542.80546.00549.201.52%6.39%552.00555.00558.00560.80563.80566.801.44%6.23%569.80572.602001
2002575.60578.60581.40584.401.19%5.72%587.20590.00592.60595.40598.20601.200.28%3.87%603.20605.002002
2003607.00609.00610.80612.801.23%5.80%615.80618.60621.60624.60627.60630.601.77%6.90%634.20637.802003
2004641.40645.00648.60652.400.54%4.40%654.80657.20659.60662.00664.40666.801.19%5.72%670.00673.002004
2005676.20679.40682.60685.801.33%6.00%689.20692.60696.00699.40703.00706.401.79%6.94%710.40714.402005
2006718.60722.60726.80731.002.85%9.09%736.40742.00747.40753.00758.60764.200.50%4.32%767.00769.602006
2007772.40775.20778.00780.801.55%6.45%785.00789.20793.20797.40801.80806.001.21%5.76%809.80813.602007
2008817.60821.40825.20829.201.53%6.41%833.60838.00842.40846.80851.20855.802.42%8.22%861.60867.402008
2009873.20879.00885.00891.002.46%8.30%897.00903.20909.40915.40921.80928.00-2.78%0.00%928.00928.002009
2010928.00928.00928.00928.001.53%6.41%932.80937.80942.80947.80952.80957.800.77%4.87%961.60965.602010
2011969.40973.20977.20981.200.37%4.05%984.40987.80991.00994.40997.801,001.002.30%7.98%1,007.601,014.202011
20121,020.801,027.401,034.201,041.001.53%6.41%1,046.401,052.001,057.601,063.201,068.801,074.401.10%5.54%1,079.401,084.202012
20131,089.201,094.201,099.201,104.200.88%5.09%1,108.801,113.401,118.201,122.801,127.601,132.400.59%4.50%1,136.601,140.802013
20141,145.001,149.401,153.601,157.800.59%4.50%1,162.201,166.401,170.801,175.201,179.401,183.800.92%5.17%1,188.801,194.002014
20151,199.001,204.201,209.201,214.400.74%4.80%1,219.201,224.001,228.801,233.801,238.601,243.60-0.80%1.67%1,245.401,247.002015
20161,248.801,250.601,252.201,254.000.77%4.87%1,259.001,264.001,269.201,274.201,279.401,284.600.08%3.46%1,288.201,292.002016
20171,295.601,299.401,303.001,306.801.38%6.11%1,313.401,320.001,326.601,333.201,340.001,346.800.98%5.29%1,352.601,358.602017
20181,364.401,370.401,376.401,382.401.24%5.82%1,389.001,395.601,402.401,409.001,415.801,422.601.11%5.56%1,429.201,435.602018
20191,442.201,448.801,455.401,462.201.16%5.66%1,469.001,475.801,482.801,489.601,496.601,503.600.70%4.72%1,509.401,515.402019
20201,521.201,527.201,533.201,539.001.01%5.35%1,545.801,552.601,559.401,566.401,573.201,580.200.53%4.38%1,586.001,591.602020
20211,597.401,603.201,609.001,614.800.84%5.01%1,621.401,628.201,635.001,641.601,648.401,655.201.77%6.90%1,664.601,674.002021
20221,683.601,693.001,702.601,712.403.56%10.54%1,727.201,742.001,757.001,772.001,787.201,802.604.81%13.08%1,821.801,841.002022
20231,860.601,880.401,900.401,920.403.24%9.89%1,936.001,951.601,967.401,983.201,999.202,015.401.69%6.74%2,026.602,037.802023
20242,049.002,060.402,071.802,083.401.97%7.31%2,096.002,108.402,121.202,133.802,146.602,159.601.48%6.31%2,170.802,182.002024
20252,193.402,204.802,216.202,227.800.95%5.23%2,237.402,247.002,256.802,266.402,276.202,286.001.43%6.21%2,297.602,309.402025
20262,321.202,333.002,345.002,357.001.56%6.47%2,369.602,382.202,394.802,407.602,420.402,433.201.67%6.70%2,446.602,460.002026
20272,473.602,487.202,501.002,514.80

From $500.00 to $2,514.80 over 27.5 years = 5.96% average annual increase compounded semi-annually.

Generated  05/01/26  08:02