You should only be entering one W-2 with multiple rows in the state section to indicate the two states.
If you are using a CD/downloaded version of TurboTax, then you enter the second row of state information underneath the first one.
If you are using TurboTax Online, click the blue + Add another state underneath the state information until you have entered all the rows you need.
@trbTx008
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
