$1,000 I Bond with 1.10% Fixed Rate Purchased August 2003

 Jan
1
Feb
1
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Rate
Com
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Rate
Mar
1
Apr
1
May
1
Jun
1
Jul
1
Aug
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Com
posite
Rate
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2003 1,000.001.77%4.66%1,004.001,007.601,011.601,015.602003
20041,019.201,023.200.54%2.19%1,025.201,026.801,028.801,030.801,032.401,034.401.19%3.49%1,037.201,040.401,043.201,046.402004
20051,049.601,052.401.33%3.77%1,055.601,058.801,062.401,065.601,068.801,072.401.79%4.70%1,076.401,080.801,084.801,089.202005
20061,093.201,097.602.85%6.83%1,103.601,110.001,116.001,122.401,128.801,135.200.50%2.11%1,137.201,139.201,141.201,143.202006
20071,145.201,147.201.55%4.22%1,151.201,155.201,159.201,163.201,167.201,171.601.21%3.53%1,175.201,178.401,182.001,185.202007
20081,188.801,192.401.53%4.18%1,196.401,200.801,204.801,208.801,213.201,217.202.42%5.97%1,223.201,229.201,235.201,241.202008
20091,247.601,253.602.46%6.05%1,260.001,266.001,272.401,278.801,285.201,291.60-2.78%0.00%1,291.601,291.601,291.601,291.602009
20101,291.601,291.601.53%4.18%1,296.001,300.401,305.201,309.601,314.001,318.400.77%2.65%1,321.201,324.001,327.201,330.002010
20111,332.801,336.000.37%1.84%1,338.001,340.001,342.001,344.001,346.401,348.402.30%5.73%1,354.801,361.201,367.601,374.002011
20121,380.401,387.201.53%4.18%1,392.001,396.801,401.601,406.401,411.201,416.001.10%3.31%1,420.001,423.601,427.601,431.602012
20131,435.601,439.600.88%2.87%1,443.201,446.401,450.001,453.201,456.801,460.400.59%2.29%1,463.201,466.001,468.801,471.602013
20141,474.401,477.200.59%2.29%1,480.001,482.801,485.601,488.401,491.201,494.000.92%2.95%1,497.601,501.201,504.801,508.802014
20151,512.401,516.000.74%2.59%1,519.201,522.401,525.601,529.201,532.401,535.60-0.80%0.00%1,535.601,535.601,535.601,535.602015
20161,535.601,535.600.77%2.65%1,538.801,542.401,545.601,549.201,552.401,556.000.08%1.26%1,557.601,559.201,560.801,562.402016
20171,564.001,566.001.38%3.88%1,571.201,576.001,581.201,586.001,591.201,596.400.98%3.07%1,600.401,604.401,608.801,612.802017
20181,616.801,620.801.24%3.59%1,625.601,630.401,635.201,640.001,645.201,650.001.11%3.33%1,654.401,659.201,663.601,668.402018
20191,672.801,677.601.16%3.43%1,682.401,687.201,692.001,696.801,701.601,706.400.70%2.51%1,710.001,713.601,717.201,720.802019
20201,724.401,728.001.01%3.13%1,732.401,736.801,741.601,746.001,750.401,755.200.53%2.17%1,758.401,761.601,764.801,768.002020
20211,771.201,774.400.84%2.79%1,778.401,782.801,786.801,790.801,795.201,799.201.77%4.66%1,806.001,813.201,820.001,827.202021
20221,834.001,841.203.56%8.26%1,853.601,866.401,878.801,891.601,904.401,917.204.81%10.77%1,934.001,951.201,968.001,985.602022
20232,002.802,020.403.24%7.62%2,033.202,045.602,058.402,071.202,084.402,097.201.69%4.50%2,104.802,112.802,120.802,128.402023
20242,136.402,144.401.97%5.06%2,153.202,162.402,171.202,180.402,189.602,198.801.48%4.08%2,206.402,213.602,221.202,228.802024
20252,236.002,243.600.95%3.01%2,249.202,254.802,260.402,266.002,271.602,277.201.43%3.98%2,284.802,292.402,299.602,307.202025
20262,314.802,322.401.56%4.24%2,330.402,338.802,346.802,355.202,363.202,371.60

From $1,000.00 to $2,371.60 over 23.0 years = 3.79% average annual increase compounded semi-annually.

Generated  11/04/25  09:10