$50 I Bond with 1.20% Fixed Rate Purchased March 2008

 Jan
1
Feb
1
Mar
1
Infla
tion
Rate
Com
posite
Rate
Apr
1
May
1
Jun
1
Jul
1
Aug
1
Sep
1
Infla
tion
Rate
Com
posite
Rate
Oct
1
Nov
1
Dec
1
2008 50.001.53%4.28%50.1850.3650.5450.7250.9051.082.42%6.07%51.3451.6051.842008
200952.1052.3652.642.46%6.15%52.9053.1853.4453.7253.9854.26-2.78%0.00%54.2654.2654.262009
201054.2654.2654.261.53%4.28%54.4654.6454.8455.0455.2255.420.77%2.75%55.5455.6855.802010
201155.9256.0656.180.37%1.94%56.2856.3656.4656.5456.6456.722.30%5.83%57.0057.2657.542011
201257.8258.1058.381.53%4.28%58.5858.8059.0059.2059.4259.621.10%3.41%59.7859.9660.122012
201360.3060.4660.640.88%2.97%60.7860.9461.0861.2461.3861.540.59%2.39%61.6661.7861.902013
201462.0262.1662.280.59%2.39%62.4062.5262.6662.7862.9063.020.92%3.05%63.1863.3463.502014
201563.6663.8263.980.74%2.69%64.1264.2664.4064.5664.7064.84-0.80%0.00%64.8464.8464.842015
201664.8464.8464.840.77%2.75%64.9865.1465.2865.4465.5865.740.08%1.36%65.8265.8865.962016
201766.0466.1266.181.38%3.98%66.4066.6266.8467.0667.2867.500.98%3.17%67.6867.8668.042017
201868.2268.4068.561.24%3.69%68.7668.9869.1869.4069.6269.821.11%3.43%70.0270.2270.422018
201970.6270.8271.021.16%3.53%71.2271.4471.6471.8672.0672.280.70%2.61%72.4472.6072.762019
202072.9073.0673.221.01%3.23%73.4273.6273.8074.0074.2074.400.53%2.27%74.5474.6874.822020
202174.9675.1075.240.84%2.89%75.4275.6075.7875.9676.1476.321.77%4.76%76.6276.9277.222021
202277.5277.8478.143.56%8.36%78.6879.2279.7680.3080.8681.404.81%10.88%82.1282.8683.582022
202384.3285.0885.823.24%7.72%86.3686.9287.4688.0288.5889.141.69%4.60%89.4889.8290.162023
202490.5090.8491.201.97%5.16%91.5891.9892.3692.7693.1693.561.48%4.18%93.8894.2094.542024
202594.8695.1895.520.95%3.11%95.7696.0296.2696.5096.7697.001.43%4.08%97.3297.6697.982025
202698.3298.6498.981.56%4.34%99.3499.70100.04100.40100.76101.12

From $50.00 to $101.12 over 18.5 years = 3.84% average annual increase compounded semi-annually.

Generated  11/04/25  09:10