If you redeemed a U.S. Savings Bond this year and reported interest for this bond on previous tax returns, you will need to note the amount in the program that was previously reported.
The amount reported as income on prior year return(s) will then be subtracted out on Schedule B (Form 1040) Interest and Ordinary Dividends before transferring over to the federal form.
Note that any link in the information above is updated each year automatically and will take you to the most recent version of the document at the time it is accessed.