You'll have to do this on a computer or laptop, as it involves
installing the TurboTax download software. You won't be able to do this
on a mobile device.
- Sign in at TurboTax.com with the login you used when you filed your 2017 return.
- Click Show to open Your tax returns & documents.
- Select 2017, and then click Amend (change) 2017 return.
- In the expanded instructions, click the links in step 1 (download your .tax file) and step 2 (download TurboTax Desktop 2017).
- Install the TurboTax Desktop 2017 software. Win instructions | Mac instructions
- Now, open your .tax file in the TurboTax Desktop 2017 software by choosing File > Open Tax Return (Windows) or TurboTax > Open Tax Return (Mac). Browse to the location of your tax file, and then click Open.
- Finally, you are ready to amend your 2017 return.
