State tax filing

The amount that goes on line 3 of the Form 760C is your 2023 tax liability after the spouse adjustment and credits. This is calculated as line 18 minus lines 23–25 of your 2023 Form 760. 

If you filed with TurboTax last year, this amount should automatically calculate, but if it didn't you'll need to enter the information from your 2023 return into the Underpayment Penalty section of your Virginia return in TurboTax.