I Bonds 2026: Current Rate, Rules and Calculator
Savings & Inflation Protection
Current Rate: 4.26%
Free I Bond Calculator
Resets November 1
I Bonds 2026: Current I Bond Rate, How Series I Savings Bonds Work and a Calculator
The fixed and inflation parts of the rate, the formula Treasury uses, the $10,000 limit, the one-year lock and three-month penalty, tax treatment, and a calculator, with an update due on November 1.
Published: October 30, 2026
By: Gnz, SmartFinanceHub
~13 min read
To be reviewed when Treasury announces the November 1 rates


