I was only halfway through my taxes when I filed an extension and ended up paying $13K in federal taxes. I went back and finished my taxes and ended up getting a refund. However, I did not include my previous payment anywhere in my return ( I wasn't aware I was supposed to do this.) Am I still able to get that money refunded or do I need to do anything on my end (i.e. reach out to IRS, file something, etc.) ??
