You can deduct the Turbo Tax cost or any tax preparation fees you actually paid in on your tax return no matter what year it is for. But it is a Misc Deduction and only the amount OVER 2% of your AGI is deductible so it might not be worth putting it in. So if you paid $50 in fees your income would have to be less than $2,500 to be able to deduct any of it and then only a portion of it is deductible. And then the total of all your deductions has to be more than the standard deduction to give you any benefit.
