Individuals
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Special Situations
- Identity Verification Letters Information
- First-Time Filers
- Students
- Filing for a Deceased Taxpayer
- Filing a Return For Spouses With Different States of Residence
- Military Personnel
- Pub-121, Illinois Income Tax Withholding for Household Employees
- Nonresidents
- Injured and Innocent Spouse
- Power of Attorney
Tax Information
- Abusive Tax Shelters
- Additions/Subtractions
- Amending My Return
- Credits
- Due Date/Filing Extensions
- Estimated Payments
- Filing Requirements
- Filing Status
- Free Tax Preparation Resources
- Identity theft and its impact on your taxes
- IL-2848, Power of Attorney
- Illinois Tax Requirements for Cars, Trucks, Vans, Motorcycles, ATVs, Trailers, and Mobile Homes
- Interest Rates
- Letters and Notices
- Penalties
- Property Tax Number Information
- Social Security benefits and certain retirement plans
- Taxable Income
- Tax Rate
- Use tax Questions and Answers
- Voluntary Disclosure Program