$10,000 I Bond with 1.40% Fixed Rate Purchased January 2027

 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
202710,0002.04%5.51%10,04410,09210,13610,18410,22810,276

From $10,000 to $10,276 over 0.5 years = 5.52% average annual increase compounded semi-annually.

Generated  10/30/26  15:03