If there's nothing in your W-2, try entering "0" or leaving it blank. If your state doesn't have state taxes (for example Florida) but have "FL" in box 15 and nothing in box 16, then leave both 15 and 16 empty.
TurboTax Expert Assist
Get answers to all your tax questions
Our experts are available on-demand, no appointment needed. Get help all year long with TurboTax Expert Assist.