Summary
- The I Bond’s inflation-adjusted rate will rise slightly on November 1, so there is no pressure to buy before then.
- But could the I Bond’s fixed rate fall from its current 0.3%? The data suggest zero chance, but the Treasury is unpredictable.
- In fact, the data clearly support an increase in the fixed rate to 0.4% and possibly even 0.5%.

IBIL currently holds only two 10-year TIPS. In 2030 that fund will purchase new 5-year TIPS issues (assuming current issuing…