I already file a tax return, how do I start new return?

[hughesmal]

I need to file a separate tax return, how do I start a new return?

[xmasbaby0]

A new tax return for a different person?   What are you trying to do?   A tax return is your Form 1040 that you put all of your information on to send to the IRS.    If you mean you received another W-2 or other tax document, that is not a "return."   If you filed a tax return already and received another W-2 or some sort of 1099, etc., you have to wait until the first tax return has been fully processed.   Then you amend by using a special form called a 1040X in order to add more income or make corrections to mistakes.

If you mean you need to prepare a tax return for someone else:

https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-start-another-return-in-turbotax-onli...

Or  if you are using the CD/download you go up to the tool bar and click  File> New Return

[macuser_22]

Online accounts are only good for one tax return.   You must create a new account with a different user ID to file another return online.