Should I pay/submit an estimated tax payment on the redemption of I-Bonds during the course of the year. Ie. I redeem I bonds now (March). And, then pay estimated tax on the interest for those I-bonds in the first quarter April 15th? OR Can I wait until the end of the year without a penalty? I know that for Treasuries like bills, bonds, notes... I have to pay estimated tax for interest payments due the next scheduled estimated tax payment date.
