Illinois Department of Revenue

Committed to excellence and working together to fund Illinois' future

Important Notices

Reduced Walk-Up Window Service on December 13 & 14

Illinois Department of Revenue (IDOR) walkup windows will operate at limited capacity from 12:00 PM on December 13, 2024, until the close of business on December 14, 2024. This limited capacity will affect all IDOR regional office locations as well as the following Chicago Secretary of State facilities: SOS North (5401 N Elston), SOS South (9901 S Martin Luther King Dr.), and SOS West (5301 W Lexington St.).

During this time:

Only check payments will be accepted; cash and credit card payments cannot be processed.
No receipts will be issued.
Employees will not be able to look up taxpayer information.

Have you received a letter or Final Notice of Tax Due assessing an Estimated Payment Penalty?

Learn why you received this letter from IDOR by visiting our webpage Letters and Notices for Individual Income Tax (illinois.gov).

Response Options for Identity Verification Letters

If you received an identity verification letter from the Illinois Department of Revenue, you can respond electronically by selecting the option that matches your letter: enter a code, take a quiz, or attach documents. No MyTax Illinois account is required. For more information, see Identity Verification Letters Information.