Skip to main content

Scam Alert: Fake Texts and Websites Impersonating IDOR

Be alert for fraudulent messages or websites attempting to steal your banking information, login credentials, or credit card details. The Illinois Department of Revenue (IDOR) will never request personal or financial information via text message. To confirm official communications or contact details, always visit https://tax.illinois.gov.

Employment Sign Up for Updates

Closing Your Business

When you decide to close your business, you must contact the Illinois Department of Revenue regarding your tax liabilities. Contact can be made:

In addition, when you file your final tax form for each respective tax type, please indicate it is your final return by checking the box on the form. Note: Some returns may not have a final return box.