I want to amend 2016 tax return not filed through Turbotax. Do I have to replicate/create the original tax return sheet before going ahead with the amendment?

[MiriamF · Accepted solution]

Yes, you will need to replicate the original return if the tax return was not created in TurboTax.

The only way the software can tell what has changed is to have the original information. Once you have created the amendment, you will then need to mail to the IRS any forms that are new or have changed due to the amendment, plus the 1040X.

This is how to amend a 2016 return.