Revenue, Department of
The primary responsibility of the Department of Revenue is to serve as the tax collection agency for state government and for local governments. The department regulates the manufacture, distribution, and sale of alcoholic beverages. The department also oversees local property tax assessments, and functions as the funding agent for the Illinois Housing Development Authority.

IL-2848 Power of Attorney
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Business Tax Registration Online
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Unemployment & Withholding Tax for Household Employees
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Verify a Registered Business
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Business Registration
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Certificate of Resale
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IL-PIN Inquiry
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Income Tax Refund Status Inquiry
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1099-G Lookup
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Register to Pay Business Taxes
Electronically file your original Individual Income Tax Return with MyTax Illinois.
Sales Tax Web Filing
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Business Tax Registration Verification
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Unemployment Tax, Wage Reports, & Withholding Filing
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Individual Income Tax Payment
Check the status of your Illinois Individual Income Tax refund using 'Where’s My Refund?'
Obtaining a Copy of a Tax Return
Access information on filing Form IL-4506 to obtain a copy of a state tax return.
Business Taxes Web Pay
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Closing Your Business
Contact IDOR when closing a business to determine tax liabilities.
Taxes at Fairs Festivals Flea Markets and Craft Shows
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1040 ES Payment Inquiry
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IL-1040 Address Change
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Estimated Payments
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Tax Rate Finder
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Claiming Disaster Relief
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File Income Taxes
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Taxpayer Answer Center
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W-2 Transmitter Registration
Employers may electronically register and obtain their user ID (ETIN) and password for transmission of W-2s online.
File Business Taxes
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Withholding Tax Coupon Booklet Requests
Make your IL -501 payment online here.
Tax Registration Inquiry
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Illinois Income Tax Filing (IL-1040)
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Business Tax Account Summary
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Abusive Tax Avoidance Transactions
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Error Notice & Bill Inquiry
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Withholding Tax for Household Employees
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Withholding Income Tax Web Filing
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Excise Tax Web Filings
Extension Payments
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Motor Fuel Refund Inquiry
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