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Scam Alert: Fake Texts and Websites Impersonating IDOR

Be alert for fraudulent messages or websites attempting to steal your banking information, login credentials, or credit card details. The Illinois Department of Revenue (IDOR) will never request personal or financial information via text message. To confirm official communications or contact details, always visit https://tax.illinois.gov.

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Other Publications and Related Resources

General Information

Direct Filing Specifications (Developers)

Motor Fuel Taxes

  • MFUT-53 - Illinois Motor Fuel Use Tax Carrier Compliance Manual
  • PIO-20 - Law Enforcement Guide Motor Fuel Use Tax License and Decals - Updated May 2025
  • PIO-71 - Dyed Diesel Fuel Enforcement Program

Property Tax

  • PIO-16 - An Overview of Property Tax
  • PIO-37 -Information for exclusively charitable, religious, or educational organizations; governmental bodies; and certain other tax-exempt organizations
  • PIO-62 - An Overview of the Property Tax Extension Limitation Law by Referendum
  • Property Tax Statistics and Assessment Ratio Levels
  • PTAX-60 - Illinois Property Tax Rate and Levy Manual
  • PTAX-1004 - The Illinois Property Tax System
  • PTAX-1080 - Property Tax Extension Limitation Law, Technical Manual

Sales & Related Taxes

  • PIO-28 - Taxes at Fairs, Festivals, Flea Markets and Craft Shows
  • PIO-36 - Use Tax Questions and Answers
  • PIO-101 - Illinois Sales & Use Tax Matrix - HTML
  • PIO-102 - Illinois Filing, Payment, and Refund Resources for Illinois Retailers - Excel
  • PIO-115 - Illinois Grocery Tax Suspension Information (Chart) (Español) July 1, 2022 through June 30, 2023 - updated version coming soon
  • PIO-119 - Grocery Receipts Reporting on Form ST-1 and Form ST-2 Chart
  • PIO-123 - Reporting Taxable Sales of Manufactured Homes
  • PIO-125 - Determining Physical Presence and Where a Sale is Sourced - Sales and Use Tax Help Guide
  • RUT-76 - Transaction Return Chart - HMTL
  • ST-9 - A Guide for Reporting Sales Using Form ST-556, Sales Transaction Return - Updated January 2025
  • ST-9-LSE - A Guide for Reporting Sales Using Form ST-556-LSE, Transaction Return for Leases - Updated January 2025
  • ST-23 - How to Report Off-Site Sales on Form ST-556, Sales Tax Transaction Return
  • ST-58 - Reciprocal - Non-Reciprocal Vehicle Tax Rate Chart
  • ST-62 - Locally Imposed Sales Taxes Administered by the Department of Revenue--For rates, see Tax Rate Finder below
  • Tax Rate Finder

Withholding Income Tax (Payroll)

  • 2025 IL-700-T, Illinois Withholding Tax Tables Booklet (effective January 1, 2025 - December 31, 2025)

The Legislative Research Unit produces The Illinois Tax Handbook for Legislators. This handbook contains information on Illinois state taxes collected by the Department of Revenue and other state agencies.