$500 I Bond with 1.40% Fixed Rate Purchased December 2006

 Infla
tion
Rate
Com
posite
Rate
Jan
1
Feb
1
Mar
1
Apr
1
May
1
Jun
1
Infla
tion
Rate
Com
posite
Rate
Jul
1
Aug
1
Sep
1
Oct
1
Nov
1
Dec
1
2006 500.002006
20071.55%4.52%501.80503.80505.60507.60509.40511.401.21%3.84%513.00514.60516.20518.00519.60521.202007
20081.53%4.48%523.20525.00527.00529.00531.00532.802.42%6.27%535.60538.40541.00543.80546.60549.602008
20092.46%6.35%552.40555.40558.20561.20564.20567.00-2.78%0.00%567.00567.00567.00567.00567.00567.002009
20101.53%4.48%569.00571.20573.40575.40577.60579.800.77%2.95%581.20582.60584.00585.40587.00588.402010
20110.37%2.15%589.40590.60591.60592.60593.60594.802.30%6.03%597.80600.80603.80606.60609.80612.802011
20121.53%4.48%615.00617.40619.60622.00624.20626.601.10%3.62%628.40630.40632.20634.20636.00638.002012
20130.88%3.17%639.60641.40643.00644.80646.40648.200.59%2.59%649.60651.00652.40653.80655.20656.602013
20140.59%2.59%658.00659.40660.80662.20663.60665.200.92%3.25%667.00668.80670.60672.40674.20676.002014
20150.74%2.89%677.60679.20680.80682.40684.20685.80-0.80%0.00%685.80685.80685.80685.80685.80685.802015
20160.77%2.95%687.40689.20690.80692.60694.20696.000.08%1.56%697.00697.80698.80699.60700.60701.402016
20171.38%4.18%703.80706.20708.60711.20713.60716.000.98%3.37%718.00720.00722.00724.00726.00728.002017
20181.24%3.90%730.40732.80735.00737.40739.80742.201.11%3.64%744.40746.60749.00751.20753.40755.802018
20191.16%3.74%758.20760.40762.80765.20767.60770.000.70%2.81%771.80773.60775.40777.20779.00780.802019
20201.01%3.43%783.00785.20787.40789.80792.00794.200.53%2.47%795.80797.40799.00800.80802.40804.002020
20210.84%3.09%806.00808.20810.20812.20814.40816.401.77%4.96%819.80823.00826.40829.80833.20836.602021
20223.56%8.57%842.40848.40854.40860.40866.40872.404.81%11.09%880.20888.20896.20904.40912.60920.802022
20233.24%7.93%926.80932.80938.80945.00951.20957.401.69%4.80%961.20965.00968.80972.60976.60980.402023
20241.97%5.37%984.80989.00993.40997.801,002.201,006.801.48%4.38%1,010.401,014.001,017.801,021.401,025.201,028.802024
20250.95%3.31%1,031.601,034.401,037.201,040.201,043.001,045.801.43%4.28%1,049.401,053.201,057.001,060.601,064.401,068.202025
20261.56%4.54%1,072.201,076.201,080.201,084.401,088.401,092.40

From $500.00 to $1,092.40 over 19.5 years = 4.05% average annual increase compounded semi-annually.

Generated  11/04/25  09:10