Skip to main content
Sign Up For Updates

Report Tax Fraud and Related Violations

The Illinois Department of Employment Security administers unemployment claims and unemployment insurance taxes. For reporting fraud related to unemployment, visit the Illinois Department of Employment Security webpage "Reporting Unemployment Insurance Fraud".

Thank you for your interest in reporting tax crimes within the State of Illinois. Tax fraud, including related violations such as the sale and delivery of contraband cigarettes or electronic cigarettes, or misuse of licenses affects us all by providing an unfair business advantage to tax cheaters and by creating other harmful effects. See Descriptions

There are three different ways you may report this suspected tax crime or related violations:

ILLINOIS DEPARTMENT OF REVENUE
BUREAU OF CRIMINAL INVESTIGATIONS
PO BOX 19014
SPRINGFIELD IL 62794-9014 

  • Call 1 800 CHEAT 11 (1 800 243-2811). Note: If our agents are unavailable when you call, you may leave a message. If you leave a message and require a response, please leave your contact information including a phone number where we can reach you.

Please Note: Complaints regarding improper claiming of dependents, fraudulent activity by non-Illinois residents or other issues related to the federal income tax return should be reported to the Internal Revenue Service (IRS) at 1 800 829-1040 or www.irs.gov.

For Child Support call 1 800 447-4278.