Paid amended tax due online, do I need to add the payment to 1040x

[cathiexu]

Hi All,

I'm filing 1040x for 2021 amend and found I have tax due (assume $100).  On the IRS website it says I could pay due online with payment type "amend".  

Let's say, on my current 1040x generated by turbotax, line 20( Amount you owe) is $100, and I now make $102 (considering interest etc) online.

How should I let IRS know that I have already paid tax due online for this amendment? Should I take an extra step by adding $102 to any line of 1040x and eventually show the amount due is $0 as I don't owe anything to the IRS?

Or, just keep my 1040x as it is now and mail directly? 

Many thanks to your consistent guidance!

Thanks

[fanfare]

When you pay the "amount you owe" selecting "Amended Return", you are done.

Do not try to calculate interest or penalties, IRS will calculate it and send you a bill.

@cathiexu 

[cathiexu]

@fanfare 

To be more specific, my question is actually, once I make this payment online, should I reflect this payment anywhere on 1040x? or just keep 1040x as it is (showing $100 tax due)? 

[dmertz]

" once I make this payment online, should I reflect this payment anywhere on 1040x? or just keep 1040x as it is (showing $100 tax due)? "

No.  When you make an online payment, the IRS knows that you paid.  The tax liability and payment information is aggregated in your tax account.  A transcript of your tax account is available online:

https://www.irs.gov/individuals/get-transcript

Of course the tax liability from your amended tax return won't be present in your tax account until they process the amendment, so the payment will typically be in your tax account well before the corresponding liability from the amendment shows up.