Illinois State Income Tax Forms Guide

The Lincoln Tomb in Springfield, Illinois.By: Teemu008

State Income Tax Forms for Illinois

Illinois is one of 41 states that collect a state income tax. If you are a full time, part-time or nonresident of Illinois and filed a federal tax return, you must also file an individual tax return with the state of Illinois.

 
State Income Tax FormsPertains ToUse These Forms If..
Individual Income Tax ReturnIndividual Income EarnersYou earned any income in the state of IL as a full-time, part-time or nonresident.
W-4 Withholding AllowanceEmployers, EmployeesYou need to file or adjust an IL state withholding tax status.
6-Month Extension RequestsIndividual Income EarnersYou need a 6 month extension to file your state income taxes.
Estimated Income Tax FormsSelf-employed Individuals, Independent ContractorsYou are required to pay monthly or quarterly estimated income taxes.
All State Income Tax FormsIncome EarnersYou need to find any state income tax form applicable to Illinois.
 

Property Tax Forms for Illinois

Illinois doesn’t collect property taxes at the state level. Property taxes are instead collected at the local level, by cities, counties and taxing districts. Homestead exemptions are automatic in Illinois.

 
Property Tax FormsPertains ToUse These Forms If..
Homestead ExemptionHomeownersNo form to file. Exemption is automatic and amounts vary by county.
Property Tax Exemption FormsHome, Land, Property OwnersYou qualify for any number of property tax exemptions for IL. Must file locally.
All Property Tax FormsHome, Land, Property OwnersYou own any property in IL, including a home, land or commercial real estate.
 

All Other Tax Forms for Illinois

All state of Illinois specific tax forms, specialty forms and motor vehicle forms provided below.
 

All Other FormsPertains ToUse These Forms If..
Motor Vehicle Tax FormsBuyer, Seller in Vehicle TransactionsYou bought or sold a motor vehicle in IL.
All IL Tax FormsAny Tax FilerYou need to find any tax form applicable to Illinois.
 

Helpful Resources for Filing Illinois Tax Forms

Illinois offers installment agreements for help paying tax bills, income tax credits and official resources for understanding and filing local property tax forms. The main Illinois tax form and instruction portal is also provided.

 
IL Filing ResourcesPertains ToUse This Resource If..
Installment Payment AgreementFilers Unable to Pay Tax Bill in FullYou can’t pay your tax bill in full but wish to make monthly payments instead.
Income Tax CreditsPotentially Any Tax FilerYou want to see what income tax credits IL has to offer and if you qualify.
Property Tax Relief CreditQualifying HomeownersYou want to see if you automatically qualify for a property tax relief credit.
Property Tax AssistanceHome, Land, Property OwnersYou need any help whatsoever with property taxes for IL.
Property Tax County DirectoryHome, Land, Property OwnersYou need to contact your county property tax office.
Illinois Forms and InstructionsAny Tax FilerYou need detailed information on any of the various taxes IL collects.
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