Back up File

[Jasmine18]

I need to open a tax file for the year 2015 for Washington S

[MichelleLO]

To open your 2015 tax file, you would need to do so with the 2015 TurboTax software. Please see the below FAQ for additional information:
https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-prepare-a-prior-year-tax-return/00/25...

[joepalazzo]

Where does TurboTax put the backup file and what is it called?

Directory and Name of where the file is placed when TurboTax backes it up.

[AshleyLO]

Your tax document will be saved as .taxfile. See more information here: How do I save my TurboTax Online return as a tax data file?