Yes, TurboTax automatically takes the N.C. state income taxes calculated in 2017 and add's them to state income taxes paid in 2018. Since you had an amount due of $1,700 and you paid that amount in 2018, you may be able to deduct it as an itemized deduction provided you itemized and your state, local, property taxes aren't more than $10,000 (known as the SALT cap).