Each TT online account is good for only ONE Federal income tax return and related state returns. TT charges extra for using the state return but I believe the charge for the state return includes the efiling charge for that return.
Persons needing to file multiple Federal returns are usually better served by the CD/Download versions which allow as many Federal returns as you need, and versions Deluxe and higher include one free state download for preparing the state return, although there is a fee for efiling those state returns. Of course, you could print and mail the state returns and avoid the efiling fee.
