How do I do my son's tax return, using my computer to sign in?

[VolvoGirl · Accepted solution]

Online is only good for 1 return.  But you can use the same email address for 5 accounts.   How to start another return in the Online version      https://ttlc.intuit.com/replies/3288574

[MeganS]

In order to complete a second return in TurboTax Online you will need to create a new login account.