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.

1040 ES Payment Inquiry
View estimated payment details for your Individual Income Tax Return with MyTax Illinois.
1099-G Lookup
View your current year 1099-G Certain Government Payments information online with MyTax Illinois.
Business Tax Account Summary
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Business Tax Registration Online
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Verify a Registered Business
Verify an Illinois Business Registration here. Registration-taxes-revenue
Business Registration
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Certificate of Resale
Learn more about Certificate of Resale requirements for Illinois businesses.
Claiming Disaster Relief
Locate taxpayer information on claiming disaster relief
Estimated Payments
View estimated payment details for your Individual Income Tax Return.
File Income Taxes
File income taxes online with MyTax Illinois.
Illinois Income Tax Filing (IL-1040)
Use MyTax Illinois to electronically file your original Individual Income Tax Return.
IL-PIN Inquiry
Access your IL-PIN online utlizing MyTax Illinois.
Income Tax Refund Status Inquiry
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Individual Income Tax Payment
Check the status of your Illinois Individual Income Tax refund using 'Where’s My Refund?'
Sales Tax Web Filing
File sales taxes online utlizing MyTax Illinois.
Closing Your Business
Contact IDOR when closing a business to determine tax liabilities.
Unemployment Tax, Wage Reports, & Withholding Filing
File your Employer’s Quarterly Contribution and Wage Report (UI-3/40) online with Illinois Taxnet.
Taxpayer Answer Center
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Tax Rate Finder
Utilize the Tax Rate Database for more information on taxes administered by IDOR.
Abusive Tax Avoidance Transactions
View information on efforts to identify participants and material advisors of abusive tax avoidance transactions.
IL-2848 Power of Attorney
Access information on IDOR Power of Attorney filing requirements.
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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IL-1040 Address Change
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Extension Payments
View information on extension payments for Individual Income Tax (Sole Proprietorships).
Business Tax Registration Verification
Verify an Illinois Business Registration here.
Withholding Tax for Household Employees
View additional information and reporting requirements for filing Withholding Income Tax for Household Employees.
File Business Taxes
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Sales and Use Tax Registration Certificate Revocation
Sales and Use Tax Registration Certificate Revocation by the taxpayer’s business name and address or Account ID.
Error Notice & Bill Inquiry
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Unemployment & Withholding Tax for Household Employees
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Register to Pay Business Taxes
Electronically file your original Individual Income Tax Return with MyTax Illinois.
Tax Registration Inquiry
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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.
Taxes at Fairs Festivals Flea Markets and Craft Shows
View information on Illinois sales tax requirements for retailers.
Withholding Income Tax Web Filing
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Withholding Tax Coupon Booklet Requests
Make your IL -501 payment online here.
Excise Tax Web Filings
Motor Fuel Refund Inquiry
View additional information on refunds related to Illinois taxes paid on motor fuel used for non-highway purposes.