$500 I Bond with 1.20% Fixed Rate Purchased April 2025

 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
1
2025 500.000.95%3.11%501.20502.60503.80505.20506.40507.801.43%4.08%509.60511.202025
2026513.00514.60516.40518.201.56%4.34%520.00522.00523.80525.60527.60529.401.67%4.56%531.40533.402026
2027535.40537.40539.40541.402.04%5.30%543.80546.20548.60551.00553.40555.80

From $500.00 to $555.80 over 2.5 years = 4.28% average annual increase compounded semi-annually.

Generated  10/30/26  15:02