State tax filing

TurboTax Business does not charge to e-file, it charges to obtain access to complete the business returns applicable to the state you have income for.  You should click on the State Taxes tab and proceed through the interview questions for your Iowa S-Corp return.  When you have reviewed everything and are ready to file, you can mark e-file and take care of your federal return.  TurboTax will note that you cannot e-file your Iowa Return and you can print and mail it in.