$1,000 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 1,000.001.43%3.98%1,003.201,006.401,010.001,013.202025
20261,016.401,020.001.56%4.24%1,023.601,027.201,030.801,034.401,038.001,041.601.67%4.46%1,045.601,049.201,053.201,057.202026
20271,060.801,064.80

From $1,000.00 to $1,064.80 over 1.5 years = 4.23% average annual increase compounded semi-annually.

Generated  05/01/26  08:02