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.