A TT11 file is a tax return created with TurboTax Canada 2011. It contains tax forms for the 2011 tax year along with data entered by the user. TT11 files may include both federal T1 forms as well as provincial forms for a user's specific Canadian province.

TurboTax Canada 2011 includes an "EasyStep" guide that walks you through the tax retun. Saving a TT11 file allows you to save your tax return and continue from the point where you left off at a later time.