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Important Notices
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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Frequent Questions
- How do I check the status of my individual income tax refund?
- What payment methods can I use to pay my individual income tax balance due?
- When do I have to pay my property taxes?
- How do I obtain an IL-PIN and do I need it to file?
- Does Illinois tax my pension, social security, or retirement income?
- Is there a penalty if I do not pay my tax due by the due date?
Trending Forms
- CRT-61 - Certificate of Resale
- 2023 IL-1040, Individual Income Tax Return
- REG-1, Illinois Business Registration Application
- RUT-50 Instructions
- IL-W-4, Employee's and other Payee's Illinois Withholding Allowance Certificate and Instructions
- RUT-25 Instructions
- IL-2848, Power of Attorney
- STAX-1, Application for Sales Tax Exemption
