Are you using the Download Product and looking to Amend your 2018 tax return? If so, please see the instructions below:

• To amend your 2018 return: You can actually amend your return using TurboTax Online (you don't need to use the TurboTax CD/Download software). Here's how to amend:
  1. Sign in to TurboTax.
  2. Select 2018 in Your tax returns & documents (you may need to scroll down).
  3. Now select Amend (change) 2018 return.
  4. Follow the screens to amend your return.
• To amend your 2017 or 2016 return: Use these 2017 instructions or 2016 instructions to download your tax data file and amend your return.
• To amend a 2015 or earlier year return: You’ll need to print out Form 1040-X and amend your return by hand. Go to the IRS home page and search for Form 1040-X for the year you need to amend.

TurboTax supports the amending of returns for the current year and three prior years, or 2016 – 2019 returns.

Related Information:

• Can I convert my PDF into a tax data file, or vice-versa?
• What's the difference between the tax data file and the PDF file?

If this is not the case please reply back so we may assist you further. 

I can't get the 2018 download file to go into a tax file.  It only goes into a pdf and then the amend does not work