I do not have the free version but I assume all versions have the same information. There should be a page preceding the first page of each of your federal and state tax returns. It starts off with "File by Mail Instructions for your 2020..." and has a red circle containing a white check mark in the right upper corner. Scan down the left side of the page where there is a category titled "What You Need to Mail." That will tell you to return your tax return and any additional attachments. My federal filing instructions say to include my W-2. You will also need to send the tax return and any forms that are generated by Turbo Tax as part of your return. You can find them by clicking on the button "Print/Save for your Records" and then click on Print. The popup window that opens will give you options of what to print. Select "All official forms required for filing."
