If you are using TurboTax Business software, you need to start a 'New Tax Return' from the 'File' menu. In TurboTax Online or Home & Biz, do this:
Open your return or sign into your return and click on 'Take me to my return'. Then
- type ''line of work'' into the search bar, hit enter
- click on ''Jump to line of work''
- click on 'Add Another Business' or 'Add Another line of work' depending on what version you use
See images attached. From here, you can set-up your second (or third) business.
