our federal tax return is underway or done, but now you need to add another state. First, make sure TurboTax knows that you need to file one or more nonresident state returns:
Open your federal tax return.
Click the Personal Info tab, then click Continue until you reach the screen Your Personal Info.
Scroll down to the Your Other State Info section and click Edit.
Select the appropriate answer on the Did You Live In Another State in 2011? screen (most people will answer "No"). Click Continue.
Answer Yes on the next screen Did You Make Money In Any Other States?
On the next screen, select any additional states (other than your resident state or states) where you received income and/or states that your employer accidentally withheld taxes for.
Click Continue. You will return to the same screen you saw in Step 2, and when you scroll down you will see your nonresident state(s) listed next to the line "Received Income From."
Note: When you enter your state information (wages, income, state tax withholding) in the wages and income sections of the federal return make sure that you enter your nonresident state code(s) of the state(s) that withheld state income taxes.
TurboTax Online: When you get to the State Taxes tab, the program will show you the states you need (up to five) based on what you entered in the Personal Info section.
Important: Make sure you prepare all nonresident returns before your resident state return, to ensure proper calculations. Also, make sure you select the state long form(s) even if TurboTax selects the short form(s) for you.
TurboTax Desktop: You can purchase as many additional state products as you need. The simplest way is by choosing Download State from TurboTax's Online menu. Again, always prepare your nonresident state return(s) before your resident return so that TurboTax calculates the credit properly.