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Welcome to the Illinois Department of Revenue

Committed to excellence and working together to fund Illinois' future

Important Notices

Illinois e-Services File & Payment Acknowledgement Delay

Due to maintenance, file and payment acknowledgments in Illinois e-Services may be delayed from 5 PM on Friday, June 27, through 8 AM on Monday, June 30. Files uploaded and payments made during this time will still be valid and timestamped. Acknowledgments will resume on Monday, June 30.

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.

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