Contact Us
Help with Tax Questions
Find answers to your frequently asked tax questions and more with
our new Taxpayer
Answer Center. If you are unable to find your answer after searching
the Taxpayer Answer Center, you will be able to email us through this system by clicking the "Send an Email"
Tab at the top of the screen.
In addition, you may find your answers using our new and improved Search engine.
In addition, you may find your answers using our new and improved Search engine.
Telephone Assistance
To receive assistance by phone, please call 1 800 732-8866 or 1 217
782-3336. Representatives are available Monday through Friday, 8 am
- 5 pm. Our TDD (telecommunication device for the deaf) number is 1 800 544-5304.
IDOR also has a Business Hot Line that helps meet the needs of businesses and tax professionals. The Business Hot Line is available at 1 217 524-4772, Monday through Friday, 8 am - 5 pm.
Other Department Phone Numbers
IDOR also has a Business Hot Line that helps meet the needs of businesses and tax professionals. The Business Hot Line is available at 1 217 524-4772, Monday through Friday, 8 am - 5 pm.
Other Department Phone Numbers
Visit a Local Office
When you come to one of the department's facilities, bring all available
information with you. No appointments are necessary; however, if you
have a complex issue, please contact the department ahead of time
so they can be prepared to give you the help you may need.
Regional Office Locations & Contact Information
Regional Office Locations & Contact Information
