filing ILLINOIS RETURN BY MAIL

[garyjan65]

IS A COPY OF MY ARIZONA RETURN AND FRDERAL RETURN NEED TO BE ATTCHED TO ILLINOIS?

[JulieS]

Yes, you have to attach a copy of the federal return to your Illinois tax return.

You also need to attach a copy of the other state return if you are claiming a credit for taxes paid to the other state, or if you are filing as a part year resident.