Each TurboTax
Online account is for one federal tax return.
However, you can create another TurboTax Online account to file another return
using the same email address but a different login/User ID for each
account. If you are preparing multiple tax returns, a CD/Download may
be more economical. See the info below for creating another online
account or for purchasing a CD/Download:
Create
another TurboTax Online account:
https://ttlc.intuit.com/replies/3288574
CD/Download
products:
If you are
planning to prepare more than one return, you may want to consider
purchasing a TurboTax CD/Download as you get 5 free
federal e-files with the product. Here is a link to the
CD/Download products:
Which TurboTax CD/Download product is right for you?