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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.

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For Tax Assistance

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

QR code that directs the user to the IDOR homepage

  • 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 2023 filing season:
    • Friday, April 12, 2024 8:00 AM - 7:00 PM
    • Monday, April 15, 2024 7:30 AM - 7:00 PM
  • for automated tax assistance . . . 24 hours a day, 7 days a week

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.