Right on the main website: When do I get the interest on my I bond? With a Series I savings bond, you wait to get all the money until you cash in the bond. E

Right on the main website: When do I get the interest on my I bond? With a Series I savings bond, you wait to get all the money until you cash in the bond. Electronic I bonds: We pay automatically when the bond matures (if you haven’t cashed it before then). Paper I bonds: You must submit the paper bond to cash it. See Cash in (redeem) an EE or I savings bond. https://www.treasurydirect.gov/savings-bonds/i-bonds/ https://www.treasurydirect.gov/savings-bonds/i-bonds/