Anita01
New Member

Get your taxes done using TurboTax

Sorry, but it's not regarded that way by The IRS.  That's why you you should add it as state tax paid in 2017, assuming you paid it after or with your 2017 state return.  If you paid both the original amount due with your state return plus the excess in 2017, then the deduction can create a neutral effect on your tax owed.