See the instructions in the TurboTax FAQ below for entering those state taxes. Keep in mind that you must itemize your deductions on Schedule A in order to utilize this deduction. With the new tax laws now in force, many taxpayers who used to itemize deductions are using the standard deduction.
"Can I deduct state or local income tax on my federal return?"
https://ttlc.intuit.com/replies/3302371
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***