Illinois Tax Forms 2023

What is Illinois Form IL-1040?

Illinois Form IL-1040 is used by full-year residents, part-year residents, and nonresidents to file their state income tax return. The purpose of Form IL-1040 is to determine your tax liability for the state of Illinois. Nonresident and part-year resident filers are also required to complete Illinois Schedule NR.

The State of Illinois does not have an Easy Form (EZ) or Short Form. Read the General Information section of the IL-1040 instructions book to help determine if you should file as a full-year resident, part-year resident, or nonresident for tax year 2023.

Do I have to file an Illinois tax return?

You must file an Illinois tax return if you were required to file a federal income tax return. There is also an income test for those who were not required to file a federal income tax return. You must file an Illinois tax return if your Base Income (line 9) exceeds your total Exemptions claimed (line 10). For tax year 2023, Single residents under the age of 65 must file if their income is more than $2,425. Married residents with no dependents must file if their income is more than $4,850.

Even if your Base Income is below the amount specified for the total exemptions claimed, you may still want to file an Illinois tax return. You may receive a refund for the state tax amount shown on your Illinois W-2, for example. You may also be eligible for any Illinois earned income credit or other low-income related credits.

Read the Who Must File section of the IL-1040 instructions book to help determine if you should file a state income tax return for tax year 2023.

How to pay estimated taxes in Illinois?

Illinois Form IL-1040-ES is used to pay estimated taxes. If you have taxable income from self-employment, interest, dividends, unemployment compensation, and pensions, you may have to pay estimated tax to the state of Illinois.

Download Illinois Form IL-1040-ES from the list of forms in the table below on this page. The computation worksheet and instructions for Form IL-1040-ES can be found inside the PDF file. The last page of the Illinois 1040-ES file contains the fillable voucher for the 2024 tax year. Open the PDF file and print the two pages of the form. Then, fill in and mail to the Illinois Department of Revenue.

Illinois estimated income tax payment due dates are the same as the federal Form 1040-ES payment due dates. For the 2024 tax year, estimated tax payments are due quarterly on the following dates: April 15, 2024; June 15, 2024; September 15, 2024; and Jan 15, 2025.

Where can I get Illinois tax forms?

Printable Illinois tax forms for 2023 are available for download below on this page. These are the official PDF files published by the Illinois Department of Revenue, we do not alter them in any way. The PDF file format allows you to safely print, fill in, and mail in your 2023 Illinois tax forms.

To get started, download the forms and instructions files you need to prepare your 2023 Illinois income tax return. Then, open Adobe Acrobat Reader on your desktop or laptop computer. Do not attempt to fill in or print these files from your browser.

From Adobe Acrobat Reader use the Ctrl + O shortcut or select File / Open and navigate to your 2023 Illinois tax forms. Open the files to read the instructions, and, remember to save any fillable forms periodically while filling them in. Print all Illinois state tax forms at 100%, actual size, without any scaling.

Click the F, Fi, I, and B icons to download any Illinois Form, Fillable Form, Instructions, or Booklet listed in the table below. Booklets generally contain an assortment of printable tax forms and instructions.

We estimate that most 2023 Illinois income tax forms will be released by January 29, 2024. Links below may display draft or 2022 Illinois tax forms and instructions until they are published by the DOR.

2023 Illinois Tax Form Downloads

Form	Title	PDF
IL-1040	Illinois Individual Income Tax Return
IL-1040-ES	2023 Illinois Estimated Income Tax Payments for Individuals
IL-1040-V	Payment Voucher for Individual Income Tax
IL-1040-X	Amended Individual Income Tax Return
IL-1040-X-V	Payment Voucher For Amended Individual Income Tax Return
IL-505-I	Automatic Extension Payment for Individuals Filing Form IL 1040
IL-2210	Computation of Penalties for Individuals
Schedule 1299-C	Income Tax Subtractions & Credits
Schedule CR	Credit for Tax Paid to Other States
Schedule G	Voluntary Charitable Donations
Schedule ICR	Illinois Credits
Schedule IL-E/EIC	Illinois Exemption and Earned Income Credit
Schedule IL-WIT	Illinois Income Tax Withheld
Schedule M	Other Additions and Subtractions for Individuals
Schedule NR	Nonresident and Part-Year Resident Computation of Illinois Tax
ST-44	Illinois Use Tax Return
RC-44	Illinois Cigarette Use Tax Return

How do I track my Illinois tax refund?

To track the status of your Illinois income tax refund online, visit the Illinois Department of Revenue website and use their Where's My Refund service. Illinois Department of Revenue refund processing time is stated as within three weeks for an electronically filed return and as long as 15 weeks for a mailed in paper return.

To track the status of your Illinois income tax refund for 2023 you will need the following information:

• Name(s)
• Address
• Social Security Number
• Adjusted Gross Income (Line 1)

The requested information must match what was submitted on your 2023 Illinois Form IL-1040. To track prior year refunds, you will need to contact the Illinois Department of Revenue service center by phone or mail.

To contact the Illinois Department of Revenue service center by phone or email, use the check your refund status link above. Alternatively, read or print the 2023 Illinois Form IL-1040 instructions to obtain the proper phone number and mailing address.