If you want to
prepare another return using TurboTax Online, you will need to set up another
account. TurboTax is set up to be one tax return per account, however you
can have up to 5 accounts per email address.
If you are using the
CD/Download version you can prepare as many returns as you like and have 5
e-files. TurboTax
CD/Download version
See the TurboTax FAQ
below for instructions on how to set up another account to prepare another
return in TurboTax Online.
https://ttlc.intuit.com/replies/3288574
