May 2025 I Bond Rate. 1, 2024 to april 30, 2025 is 3.11%, which includes a fixed rate of 1.20%. That includes a fixed rate of 1.20%.
Pegged to inflation, rates on series i government savings bonds are poised to fall in may. Composite rate = fixed rate + 2 x semiannual inflation rate + (semiannual inflation rate x fixed rate) iโll walk through how to use this formula for i bonds purchased.