$5,000 I Bond with 1.20% Fixed Rate Purchased January 2008

 Jan
1
Infla
tion
Rate
Com
posite
Rate
Feb
1
Mar
1
Apr
1
May
1
Jun
1
Jul
1
Infla
tion
Rate
Com
posite
Rate
Aug
1
Sep
1
Oct
1
Nov
1
Dec
1
20085,0001.53%4.28%5,0185,0365,0545,0725,0905,1082.42%6.07%5,1345,1605,1845,2105,2362008
20095,2642.46%6.15%5,2905,3185,3445,3725,3985,426-2.78%0.00%5,4265,4265,4265,4265,4262009
20105,4261.53%4.28%5,4465,4645,4845,5045,5225,5420.77%2.75%5,5545,5685,5805,5925,6062010
20115,6180.37%1.94%5,6285,6365,6465,6545,6645,6722.30%5.83%5,7005,7265,7545,7825,8102011
20125,8381.53%4.28%5,8585,8805,9005,9205,9425,9621.10%3.41%5,9785,9966,0126,0306,0462012
20136,0640.88%2.97%6,0786,0946,1086,1246,1386,1540.59%2.39%6,1666,1786,1906,2026,2162013
20146,2280.59%2.39%6,2406,2526,2666,2786,2906,3020.92%3.05%6,3186,3346,3506,3666,3822014
20156,3980.74%2.69%6,4126,4266,4406,4566,4706,484-0.80%0.00%6,4846,4846,4846,4846,4842015
20166,4840.77%2.75%6,4986,5146,5286,5446,5586,5740.08%1.36%6,5826,5886,5966,6046,6122016
20176,6181.38%3.98%6,6406,6626,6846,7066,7286,7500.98%3.17%6,7686,7866,8046,8226,8402017
20186,8561.24%3.69%6,8766,8986,9186,9406,9626,9821.11%3.43%7,0027,0227,0427,0627,0822018
20197,1021.16%3.53%7,1227,1447,1647,1867,2067,2280.70%2.61%7,2447,2607,2767,2907,3062019
20207,3221.01%3.23%7,3427,3627,3807,4007,4207,4400.53%2.27%7,4547,4687,4827,4967,5102020
20217,5240.84%2.89%7,5427,5607,5787,5967,6147,6321.77%4.76%7,6627,6927,7227,7527,7842021
20227,8143.56%8.36%7,8687,9227,9768,0308,0868,1404.81%10.88%8,2128,2868,3588,4328,5082022
20238,5823.24%7.72%8,6368,6928,7468,8028,8588,9141.69%4.60%8,9488,9829,0169,0509,0842023
20249,1201.97%5.16%9,1589,1989,2369,2769,3169,3561.48%4.18%9,3889,4209,4549,4869,5182024
20259,5520.95%3.11%9,5769,6029,6269,6509,6769,7001.43%4.08%9,7329,7669,7989,8329,8642025
20269,8981.56%4.34%9,9349,97010,00410,04010,07610,1121.67%4.56%10,15010,18810,22610,26610,3042026
202710,342

From $5,000 to $10,342 over 19.0 years = 3.86% average annual increase compounded semi-annually.

Generated  05/01/26  08:02