The Illinois Department of Revenue’s Collections Division does use electronic (email) and telephone communications as a means to resolve tax deficiencies. This differs from the Internal Revenue Service who advertises that they will not call you personally.
If you receive a phone call or email from IDOR, you can verify its authenticity by logging into your MyTax account at MyTax.illinois.gov. Your MyTax Illinois account will provide an alert and a phone number to call if you have been referred to our Collections Division. If you do not have a MyTax Illinois account, contact our Collections Call Unit at 217-785-2698 to verify.