I have to do our fed taxes and my mother's taxes … fed and OK state. Will I have to purchase more than one Turbo Tax product?

[dcvfr45tgb]

I started our fed taxes using the free version online.  I had to upgrade to Deluxe then finally to Premier.  I am at the point where I need to file and pay for the Premier version.  Will I be able to then prepare my mother's fed and state returns using the same Premier product I used and paid for while preparing our fed taxes?  Also, will all the data be saved for use next year?  Will all the forms, etc. be available to me to print for my records and save on my PC?

[allenhodges]

one can do multiple returns on one program

[dcvfr45tgb]

Does it matter how I purchase the Premier version?  Download or DVD or start with Free???