Are you asking in regards to deducting the 2015 tax prep fees on your 2016 return?
If you are taking a standard deduction and not itemizing deductions,
it won't count. If you are itemizing deductions, it may or may not
count. Tax preparation fees are in the category "Miscellaneous
deductions subject to the 2% of AGI floor". So it may not count there
unless you have a lot of other miscellaneous deductions such that the
total exceeds 2% of AGI, and even then only if you have enough other types of deductions such that you can itemize
deductions..
FAQ: Can I claim tax prep fees as a deduction?
https://ttlc.intuit.com/questions/2559402-can-i-claim-tax-prep-fees-as-a-deduction
That having been said, see this:
FAQ: What did I pay last year for TurboTax?
https://ttlc.intuit.com/replies/3302128
