I have not mailed my return and I want to go back to fix it. Do you know how?

When the print and mail option is selected, the program thinks you have filed, so to get around this and get back in to make changes, please see the instructions below:

1. In TurboTax Online, sign into your account.
2. Select Tax Home in the left menu.
3. Scroll down to Your tax returns & documents.
4. Select 2018, and then select Add a State (you're not actually adding a state, this just gets you into the right menu).
5. Now you can make any necessary changes.