I submitted my final federal tax on 10/16 but did not deduct the amount that I had previously paid when I timely requested an extension in April. Last night I mistakenly paid $3968 instead of the $968 which was the amount that was owed following the amount submitted for the extension ($3000). Is there any way to make sure that the IRS takes payment of only the $968 amount? If not, what do I do?
