Do I need to file all Illinois tax returns before using ITR-1?

Yes. The ITR-1 will not be processed until every required tax return is filed and any balances, penalties, or interest are paid.

Can I submit the ITR-1 electronically?

The Illinois Department of Revenue primarily accepts mailed copies, but you can email a PDF copy if you have an approved e‑file account.

How long does processing take?

Allow at least 10 business days after the department receives a complete, signed ITR-1.

Is there a fee to use Formize’s PDF Filler?

No. Formize provides the fillable PDF and online filler for free.

What should I do if I make a mistake after submission?

Contact the Illinois Department of Revenue immediately. You may need to submit a corrected ITR-1 with a cover letter explaining the changes.

Illinois ITR-1 Tax Clearance Form (Fillable PDF)

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Illinois ITR-1 Tax Clearance Form (Fillable PDF)

The ITR-1 is the official request for a tax clearance from the Illinois Department of Revenue. Businesses and individuals use this form to confirm that all state tax returns have been filed and any balances, penalties, or interest have been paid before a transaction can be finalized.

What Is the ITR-1 Tax Clearance Form?

The ITR-1 verifies that you are in good standing with Illinois tax obligations. It is required for activities such as:

Closing a business entity
Transferring real property
Applying for certain state licenses

How to Complete the ITR-1 Online

Instead of printing, printing, and scanning, you can fill out the form directly in your browser using Formize’s PDF Filler. Follow the simple steps below.

Common Mistakes to Avoid

Submitting the form before all tax returns are filed.
Leaving required fields blank or using illegible handwriting.
Failing to sign and date the form.

Submission Guidelines & Processing Time

After completing the form, submit it to the Illinois Department of Revenue by mail or electronically if you have an e‑file account. Processing typically takes at least 10 business days once all requirements are met.

Need the fillable PDF now? Click the button below to open the form in Formize’s secure filler.

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FAQ

Do I need to file all Illinois tax returns before using ITR-1?
Yes. The ITR-1 will not be processed until every required tax return is filed and any balances, penalties, or interest are paid.
Can I submit the ITR-1 electronically?
The Illinois Department of Revenue primarily accepts mailed copies, but you can email a PDF copy if you have an approved e‑file account.
How long does processing take?
Allow at least 10 business days after the department receives a complete, signed ITR-1.
Is there a fee to use Formize’s PDF Filler?
No. Formize provides the fillable PDF and online filler for free.
What should I do if I make a mistake after submission?
Contact the Illinois Department of Revenue immediately. You may need to submit a corrected ITR-1 with a cover letter explaining the changes.

HOW TO

How to fill out ITR-1 for free, online in 4 easy steps:

1
Open the Fillable ITR-1 Form
Click the "Fill out this form" button on the page. The Formize PDF Filler app will load the ITR-1 directly in your browser.
2
Enter Required Information
Type your details into each field. The filler validates entries in real‑time, so you won’t miss required information.
3
Review and Sign
Use the built‑in signature tool to add your electronic signature, then review the entire form for accuracy.
4
Download or Submit
When you’re satisfied, download the completed PDF or follow the on‑screen instructions to submit it to the Illinois Department of Revenue.

ABOUT

Federal tax forms

ITR-1 is one of Federal tax forms that are documents used to report and file federal income taxes with the Internal Revenue Service (IRS) in the United States. These forms are used by individuals, businesses, and organizations to report their income, deductions, and other relevant information necessary for calculating their federal tax liability.

The most commonly used federal tax form is the Form 1040, which is used by individual taxpayers to report their personal income tax. Other commonly used forms include the Form 1065 for partnerships, Form 1120 for corporations, and Form 990 for tax-exempt organizations.

Federal tax forms typically require taxpayers to report various sources of income, such as wages, salaries, and tips, as well as income from investments, rental properties, and other sources. The forms also allow taxpayers to claim deductions and credits for various expenses, such as charitable contributions, mortgage interest, and healthcare expenses.

It is important to file federal tax forms accurately and on time, as failure to do so can result in penalties and interest charges from the IRS.

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