How do I buy savings bonds with my tax refund?
Series I Savings Bonds are a safe and convenient way to set aside some extra money from your federal tax refund.
You can designate up to $5,000 of your federal refund towards up to 3 Series I bonds, which will be mailed to the taxpayer's address on the tax return.
We'll give you the option to purchase bonds when you get to the How do you want your federal refund? screen (in the File section).
When you get to that screen, simply check the box at the very bottom, which says I would like to split my refund into more than one account OR I would like to purchase U.S. Series I Bonds for myself, my family, or someone else. Click Continue and follow the onscreen instructions.
More about Series I Bonds from the IRS