Contact Department of Revenue
If you need assistance, please log into your Taxpayer Portal Profile, and Submit a General Inquiry Service Request.
If you do not have a Portal Profile, email us at email@example.com or call 312-603-6961.
Cook County Department of Revenue
118 N Clark Street Room 1160
Chicago, IL 60602
Email Business Tax Inquiries to: firstname.lastname@example.org
Email Unincorporated Cook County Wheel Tax: email@example.com