$100 I Bond with 1.10% Fixed Rate Purchased August 2025

 Jan
1
Feb
1
Infla
tion
Rate
Com
posite
Rate
Mar
1
Apr
1
May
1
Jun
1
Jul
1
Aug
1
Infla
tion
Rate
Com
posite
Rate
Sep
1
Oct
1
Nov
1
Dec
1
2025 100.001.43%3.98%100.32100.64101.00101.322025
2026101.64102.001.56%4.24%102.36102.72103.08103.44103.80104.161.67%4.46%104.56104.92105.32105.722026
2027106.08106.48

From $100.00 to $106.48 over 1.5 years = 4.23% average annual increase compounded semi-annually.

Generated  05/01/26  08:02