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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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Latest News
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IDOR Offers Guidance on Amending State Tax Returns
The Illinois Department of Revenue (IDOR) is reminding taxpayers that if they discover an error on a previously filed state income tax return—such as a miscalculation, a missed deduction, or unreported income—they are required to file an amended return to correct the mistake.
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2024 Cook County Final Multiplier Announced
A final 2024 property tax equalization factor of 3.0355 for Cook County was announced today by the Illinois Department of Revenue.
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FY 2025-25, Sales Tax Rate Change Summary, Effective July 1, 2025
This informational bulletin provides information on certain taxing jurisdictions have imposed a local sales tax or changed their local sales tax rate on general merchandise sales.
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IDOR Awarded 2025 Bell Seal Award for Workplace Mental Health
The Illinois Department of Revenue has received the 2025 Bell Seal for Workplace Mental Health from Mental Health America, recognizing its commitment to fostering mentally healthy workplaces.
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FY 2025-24, Summary of Sales Tax Rate Changes for Aviation Fuel, Effective July 1, 2025
This informational bulletin provides a list of the changes in local sales tax rates on aviation fuel that take effect in certain taxing jurisdictions on July 1, 2025, due to the certification requirement.
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FY 2025-23, Change in the Motor Fuel Tax Rate, Effective July 1, 2025, through June 30, 2026
Section 2 of the Motor Fuel Tax Law (35 ILCS 505/2) imposes a tax per gallon on all motor fuel (i.e., diesel fuel, gasoline, gasohol, liquefied petroleum gas (LPG, commonly known as “propane”), compressed natural gas (CNG), and liquefied natural gas (LNG)) used in motor vehicles operating on Illinois public highways and in recreational type watercraft operating on Illinois waters. The Law provides that the rate of tax will be increased annually on July 1 of each year by an amount equal to the percentage increase, if any, in the Consumer Price Index for All Urban Consumers for all items published by the United States Department of Labor for the 12 months ending in March of each year, rounded to the nearest one-tenth of one cent. The percentage increase for July 1, 2025, is 2.82% (.0282).
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FY 2025-22, Change in the Motor Fuel Use Tax Rate, Effective July 1, 2025, through December 31, 2025
Illinois Motor Fuel Use Tax is comprised of two parts, Part A and Part B. 35 ILCS 505/13a. This tax is reported and paid by licensees under the International Fuel Tax Agreement (IFTA). The rates listed here are effective July 1, 2025, through December 31, 2025, for use on the quarterly IFTA returns.
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FY 2025-21, Summary of Municipal Motor Fuel Tax Rate Changes, Effective July 1, 2025
Effective July 1, 2025, the following municipalities completely or partially in Cook County are imposing a Municipal Motor Fuel Tax rate on sales of motor fuel at retail within the municipality. (65 ILCS 5/8-11-2.3.)
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Illinois Now Offers Electronic Tax Filing and Payment for Your Boat Purchase
Before you register and title a boat with the Illinois Department of Natural Resources, you must file and pay any taxes owed. If you acquire a boat from a person or business that is not in the business of selling watercraft at retail, you must file Form RUT-75, Aircraft/Watercraft Use Tax Transaction Return and pay 6.25% watercraft use tax on the watercraft's purchase price.
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Effective July 1, 2025, certain taxing jurisdictions have, by ordinance, imposed or changed their Municipal or County Cannabis Retailers’ Occupation Tax on the gross receipts from sales of adult use cannabis.
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Frequent Questions
- How do I check the status of my individual income tax refund?
- How do I obtain an IL-PIN and do I need it to file?
- When is my tax payment due?
- 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
