Yes, you only need to attach each specific state's W-2 to that state's tax return.
There are other details within the returns that will indicate that a portion of your total income is being attributed to another state. You do not need to substantiate that by sending all W-2s to both states.
Pay close attention to the forms that are printed for mailing. Extra copies of your Federal return may be printed to be mailed with the state returns. Also, if you are claiming a credit for taxes paid to another state on your AZ resident return, then a copy of the CA return may be printed to be mailed with the AZ return.
@eschaf
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
