Hi @RobertG ,
How are you?
I had a quick question about filing my Illinois state tax return. When I mail in my return, do I only need to mail in my Illinois W-2 or do I need to mail in all W-2's, 1099's, etc from 2019 (even if they are not from Illinois)?
I am just unsure whether or not it is necessary to attach W-2's from other states or just IL.
Thank you for your help!
