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Possible online services disruption due to Internet related outage

A worldwide technology outage is causing disruption to some State of Illinois online systems.  We are aware of this issue and are diligently working on restoration.

Report Individual Income Tax Fraud Online Form

Please provide as much information as possible in the blanks below. You may remain anonymous if you wish.

Note: Anonymous complaints may not be able to be investigated.

Note: Do not use this form to report identity theft on your individual income tax return. To report identity theft, visit the identity theft page and fill out Form IL-425.

Please review Violation Descriptions.

* indicates required field


Your Information


(SSN, DOB)


Violator Information


(SSN, DOB)

Provide information regarding violator's business or employees (names, how they earn income, do they hide income, etc.)