Example Penalty for Early Redemption. An I bond purchased between Nov. 1, 2024, and April 30, 2025, has a rate of 3.11%. That means a $1,000 bond earns around $15.55 in interest over six months.

To determine the value of your paper U.S. savings bonds, you can use the TreasuryDirect website. Start by locating the serial number, denomination and issue date on your bond.