IS A COPY OF MY ARIZONA RETURN AND FRDERAL RETURN NEED TO BE ATTCHED TO ILLINOIS?
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1 Replies
JulieS
Expert Alumni
Apr 14, 2020 9:52:58 AM
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.