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Important Notices
2025 Illinois Tax Amnesty (October 1, 2025 – November 17, 2025)
Pay outstanding eligible tax liabilities and have eligible penalties and interest forgiven. For more information, visit our webpage, 2025 Illinois Tax Amnesty
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 is an IL-PIN? Do I need it to file or pay individual income taxes using MyTax Illinois?
- How do I get a copy of my tax return?
- What if I live or work in a state that has a reciprocal agreement with Illinois?
- Should I file an income tax return if I live in another state but worked in Illinois?
- What are the retailers' occupation and use tax rates in Illinois? Where can I find a list of these rates?
Trending Forms
- CRT-61 - Certificate of Resale (Registered Retailers/Resellers)
- 2024 IL-1040, Individual Income Tax Return, Instructions, and Schedules
- Illinois Business Registration
- 2025 Withholding (Payroll) Tax
- RUT-50 Instructions
- RUT-25 Instructions
- Power of Attorney
- ST-1, Sales and Use Tax Return
- STAX-1, Application for Sales Tax Exemption
