Illinois State Taxes

Illinois state taxes are due on April 15th, the same day your federal return is due.

Prepare your Illinois taxes online, for free:
Avoid mistakes and claim all your deductions by filing online.

Use Turbo Tax for The Web. Work on your federal and Illinois state taxes for free until you file. Start now.

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Don't have time? Then file an extension with H&R Block.

Illinois state taxes by the numbers:

Tax Rate Range: Low - 3.0%; High - 3.0%
Income Brackets: Flat Rate
yNumber of Brackets: 1
Personal Exemptions: Single - $2,000; Married - $4,000; Dependents - $2,000
Standard Deduction: None
Medical/Dental Deduction: None
Federal Income Tax Deduction: None

Details about your Illinois state income tax return

For your Illinois state income tax, use the same filing status from your federal return.

Common Illinois tax credits include:

  • property tax paid
  • earned income credit
  • education expense credit

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Illinois income tax forms: for paper filing

Illinois income tax forms:

Form IL-1040 | 2006 Illinois Individual Income Tax Return| Instructions

Schedule CR | Tax Credits Paid to Other States

Schedule ED | Credit for Qualified Education Expenses

For more Illinois income tax forms go to the Illinois tax forms site.


Or, e-file!

More IL state taxes info

For more help, consult our guide to tax filing.

For further help on IL income tax returns, go to theIllinois Department of Revenue.