If your taxes owed on the federal tax return was $1,500 and you paid that amount with the return but you also paid $500 in April 2023, then the IRS will refund you the $500 extra that you paid.
However, if you are not in a federally declared disaster area, you were required to pay your total taxes owed on or before April 17,2023. So the IRS will be sending a bill in the mail for penalties and interest on the amount of taxes owed and not paid on time.
