I bond rates by issue period
57 six-month periods · September 1998 to October 2026
Series I savings bonds have had 57 rate periods since they launched in September 1998. Each six-month period (starting May 1 and November 1) sets a fixed rate for new bonds plus a semiannual inflation rate. The current period, May 2026 - October 2026, has a 0.90% fixed rate and a 1.67% inflation rate, for a composite of 4.26%. Pick a period below for its detail page, or see the full composite-rate history.
Source: TreasuryDirect. Data as of May 2026.
Every I bond rate period
Click a period for the detailed page.
Source: TreasuryDirect Series I rate chart. Data as of May 2026.
Related
- I bond fixed-rate history · inflation-rate history · composite-rate history
- I bond value calculator · composite-rate calculator
- I bonds explained · I bond vs EE bond
Not investment or tax advice. BondValue is an independent reference, not affiliated with the U.S. Treasury or TreasuryDirect. Savings bond rates reset every 6 months (on May 1 and November 1), and any value shown here is an estimate. Verify current rates and the exact penny value of your bonds at TreasuryDirect’s official Savings Bond Calculator. Consult a qualified professional before making financial decisions.
Last updated: 2026-06-21