If you want to make changes to a tax return that has not been filed and is showing "Ready to mail," follow the steps below:
- Sign into your TurboTax online account
- Go to your Tax Timeline
- Under Some things you can do, click Add a state (You will not really be adding a state, but this will take you back to your 2017 tax return to make changes)
If you have not set it to file by mail, then you can just click Take me to my return from the main landing page to make changes to your tax return.