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 or call 312-603-6961.



Contact Us

Cook County Department of Revenue

118 N Clark Street Room 1160

Chicago, IL 60602

Email Business Tax Inquiries to: 

Email Individual Use Tax Inquiries to:

Email Unincorporated Cook County Wheel Tax:

Telephone: 312-603-6961