A:Answer TurboTax Basic provides a "Standard Deduction" based on income. If you wish to itemize separate deductions (e.g., sales taxes for major purchases), you will need to upgrade to at least TurboTax Deluxe. Since you have been filing with Basic in the past, you apparently do not have any other major deductions such as mortgages, medical bills etc. You could try Deluxe to see if your auto purchase sales tax is more advantages than the standard deduction, but I doubt it.