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

For Tax Assistance

Visit our website for faster, easier service - 24 hours a day, 7 days a week

  • Learn about our electronic filing and payment options and get your IL-PIN 
  • Get your 1099-G amount
  • Check your estimated payments
  • Check your refund status
  • Get information about a notice or a bill
  • Get answers to frequently asked questions
  • Find a tax professional in your area
  • Change your address
  • Get information about Illinois Use Tax and Illinois Cigarette Use Tax you may owe

Phone — Call 1 800 732-8866 or 217 782-3336

  • to speak with our staff . . . Business hours: 8:00 a.m. to 5:00 p.m. Monday through Friday
  • Extended telephone hours for the 2024 filing season:
    • Monday, April 14, 2025 8:00 AM - 7:00 PM
    • Tuesday, April 15, 2025, 2024 7:30 AM - 7:00 PM
  • for automated tax assistance . . . 24 hours a day, 7 days a week

The number for our TTY is 1 800 544-5304.

Walk-in —

Business hours for the Springfield office are 8:00 a.m. to 5:00 p.m. Monday through Friday.

Springfield, IL — Willard Ice Building — 1 800 732-8866 or 217 782-3336
101 West Jefferson Street — 62702

Business hours for the following are 8:30 a.m. to 5:00 p.m. Monday through Friday.

Chicago, IL — 1 800 732-8866
555 West Monroe Street — Suite 1100 — 60661

Des Plaines — Suburban North Regional Building — 1 800 732-8866
9511 West Harrison Street — 60016

Fairview Heights — 1 800 732-8866
15 Executive Drive — Suite 2 — 62208

Marion — 1 800 732-8866
2309 West Main Street — Suite 114 — 62959

Rockford — 1 800 732-8866
200 South Wyman Street — 61101

For Assistance or Forms, Instructions, and Publications

  • Visit our website at tax.illinois.gov for assistance, publications, forms, instructions or schedules.
  • Write us at Illinois Department of Revenue, P.O. Box 19001, Springfield, Illinois 62794-9001.
  • During the filing season, Illinois forms are available at most libraries and at any taxpayer assistance office.

Other Assistance

  • For federal tax information — Call the IRS at 1 800 829-1040 or visit their website at www.irs.gov.
  • For other free tax help for low-income and senior taxpayers — Visit a free tax preparation assistance location. To locate a site near you, visit our website, call us, or, if you live in Chicago, call 311.