If you purchase an I bond before the end of this coming week you will be guaranteed 7.12% interest for the first 6 months and then 9.62 % interest for the following 6 months. After that the rates of your bond changes every 6 months (may and nov) indexed to inflation. You must hold for one year. If cashed in between years 2 - 5 you forfeit the last three months interest. After 5 years no penalty. These I bonds are issued solely by the government. The only place to purchase is
TreasuryDirect - Home. Google I Bonds on YOUTUBE - lots of videos at present.