U.S. Treasury sets Series I bond rate at 3.11% through April 2025

The U.S. Department of the Treasury has set the Series I bond rate at 3.11% through April 2025. This rate includes a variable portion based on inflation and a fixed rate that remains unchanged after purchase. The variable rate adjusts every six months, while the fixed rate does not change. Current holders will see their rates shift based on their purchase date, with the next adjustment occurring in March 2025 for those who bought bonds in September 2024. For example, a bond purchased in September 2024 will start with a variable rate of 2.96% and change to 1.90% in March 2025, while the fixed rate stays at 1.30%. This results in a new composite rate of 3.2%.