Illinois State Individual Tax Extension Filing Instructions
957 views | Last modified 3/21/2023 2:56:46 AM EST | Added by ExpressExtension Team

The State of Illinois doesn't require individuals to file a separate extension form, it automatically grants taxpayers a 6-month extension of time to file their personal income tax return if having an approved federal extension and owe zero tax due.

Extension Form To Use

There is no state-specific form to request an extension, as the state of Illinois automatically provides the extension of time for individuals to file their personal tax returns with the state.

Due Date to file Illinios tax Extension 

Illinois tax extension Filing Method (Paper/Electronic) 

It supports both paper and electronic filing options.

How to pay the state tax due? 

If you determine that you will owe tax, you must pay your tax due using any of the following options:

• Pay through Mail

Use Form IL-505-I, Automatic Extension Payment for Individuals, to pay your tax due.

Note: MyTax Illinois is an easy way to pay your IL-505-I payment.

• Pay Electronically

1. Online – Visit the Illinois website to have your payment taken from your checking or savings account. You will need your IL-PIN (Illinois Personal Identification Number).
2. Electronic Funds Transfer – Complete Form EFT-1, Authorization Agreement for Certain Electronic Payments. To print a copy of this form or for more information about this program, visit the Illinois website.
3. Credit Card – Use your MasterCard, Discover, American Express, or Visa. The credit card service provider will assess a convenience fee. Have your credit card ready and visit the Illinois website or call one of the following:

• Official Payments Corporation at 1 833 747-1434.
• Value Payment Systems at 1 888 9-PAY-ILS (1 888 972-9457).
• Link2Gov/FIS at 1 877 57-TAXES (1 877 578-2937).

Does ExpressExtension support this State filing?  

Illinois personal tax extensions are automatic, which means there is no application to submit. If you are looking for an e-file solution for Federal Form 4868, you can file your extension and get approval within minutes with ExpressExtension. 

Any Special Requirements

The extensions do not grant you an extension of time to pay any tax you owe. If you determine that you will owe tax, you must pay the tax due by the original due date of the return to avoid penalties and interests.

For more detailed information on Illinois State personal tax extension, click here.