After you file

Thank you. I mistakenly inputted withheld taxes on the line with my extension. Thus, it showed I paid double the taxes. I didn't pay that so the IRS deducted it and I owed them the money.  Turbotax's extension is very confusing. You have to really look for it and figure it out.  I mail my extensions, so I have to find "Payment with Extensions" and then input $0.00.  I thought Turbotax asked me when I started my 2020 return if the IRS had changed anything on my prior year's return; I thought I answered yes. But then, nothing happened and I can't find it again.