What are iBonds? How do iBonds earn interest? Understand the risks and opportunities. The latest investment buzz is that the initial interest rate on new Series I Savings Bonds is 9.62%! You heard right. This exciting interest rate has definitely caught everyone’s attention, and I Bonds can be purchased through October 2022 at the current rate. That rate is applied to the six months after the purchase is made. For example, if you buy an I Bond on July 1, the 9.62% would …