Illinois state tax filing

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$0Simple tax returns
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  • 350+ deductions and credits
  • Filing history, compare this year with last year
  • Print past and current tax returns at any time

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$0Investments and rental income
  • Rental property income
  • Import prior year information
  • Home ownership. Write off interest and property taxes
  • Deduction for your Health Savings Account

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$01099 income and expenses
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Illinois tax details

The Illinois Department of Revenue made a few changes for the 2025 tax year.

The Illinois exemption amount was increased to $2,850 per person.

The Child Tax Credit, available to taxpayers who qualify to claim the Illinois Earned Income Tax Credit and have a dependent child under the age of 12 years old, has been increased to 40% of the Illinois Earned Income Tax Credit.

Illinois also added a new subtraction to Schedule M for medical debt relief that was received under the Illinois Medical Debt Relief Act and is included in federal AGI.

2025 Illinois tax forms

These are the supported Illinois state tax forms on FreeTaxUSA:

  • Form IL-1040
    Individual Income Tax Return

  • Schedule CR
    Credit for Tax Paid to Other States

  • Schedule G
    Voluntary Charitable Donations

  • Schedule IL-WIT
    Illinois Income Tax Withheld

  • Schedule ICR
    Illinois Credits

  • Schedule IL-E/EITC
    Illinois Exemption and Earned Income Tax Credit

  • Schedule M
    Other Additions and Subtractions for Individuals

  • Schedule NR
    Nonresident and Part-Year Resident Computation of Illinois Tax

  • Schedule 1299-C
    Income Tax Subtractions and Credits (for individuals)

  • IL-1040-V
    Payment Voucher for Individual Income Tax

  • IL-1040-X-V
    Payment Voucher for Amended Individual Tax

  • IL-1040-ES
    Estimated Income Tax Payment for Individuals

  • IL-1040-X
    Amended Individual Income Tax Return

  • IL-4562
    Special Depreciation

  • IL-8453
    Illinois Individual Income Tax Electronic Filing Declaration

  • IL-505-I
    Automatic Extension Payment for Individuals

Frequently asked questions

2025 Illinois filing deadlines

Keep these Illinois state deadlines in mind as you do your taxes.

  • Individual tax returns
    Due by April 15, 2026

  • Illinois tax extension
    Automatic 6-month extension. No form required. If you expect to owe taxes, submit Form IL-505-I with payment.
    Due by April 15, 2026

  • Income tax payment
    Due by April 15, 2026

  • Tax returns for extension filers
    Due by October 15, 2026

2025 Illinois refunds

Ways to receive your refund

Get your Illinois refund deposited in your checking or savings account, deposited in your "Bright Start" or "Bright Directions" college savings account, mailed as a paper check, or put towards next year's Illinois taxes. First time filers will be mailed a paper check.

Refund status for e-filed tax returns

If you filed your Illinois tax return electronically, you can usually check your Illinois refund status 4-5 business days after the Illinois Department of Revenue accepts your return.

Refund status for mailed tax returns

If you mailed your Illinois tax return, you should wait 3 to 4 weeks before checking your IL refund status.

How to check your refund status

Check your IL refund status online at Find Your IL Tax Refund.

Call the Illinois Department of Revenue at 1-800-732-8866 or 217-782-3336.

2025 Illinois state tax payments

Illinois has many income tax payment options. Find the option that works best for you below.

Pay electronically

If you e-file your Illinois tax return with us, you can set this up when filing your return.

Due by April 15, 2026

Pay with a card

Visit the Illinois website to pay using a credit card.

Due by April 15, 2026

Pay by mail

If mailing your tax return, include Form IL-1040-V and your check or money order with your return.

If you e-file your tax return, mail in Form IL-1040-V and a check or money order.

If you filed an extension, mail in your extension tax payment with Form IL-505-I.

Due by April 15, 2026

2025 Illinois extension

An extension extends the time you have to file your return by up to 6 months. Illinois automatically grants a 6-month extension. No form is filed. If you need to pay taxes, you are required to pay the amount due by April 15, 2026.

You need to pay your taxes by April 15, 2026. If you pay late, you may be charged a late penalty and interest on any unpaid taxes.

If you expect a refund from Illinois:

File your return by October 15, 2026.

If you expect to owe Illinois taxes:

Submit Form IL-505-I with your payment by April 15, 2026.

Illinois prior year taxes

Even though the deadline has passed, you can still prepare Illinois taxes for prior years. Many people who file late tax returns have refunds waiting for them. We'll help you prepare and mail your federal and state tax returns.

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