Tax 990

Illinois Nonprofits - Registration, Tax Exemption, and Annual Report
Filing Requirements

Illinois Nonprofits - A Guide to Registration and Tax Compliance

To start and operate a nonprofit organization successfully, it’s essential that you have a clear understanding of the guidelines and requirements established by the respective state agency

Here, you can find out how you can register a nonprofit in the state of Illinois, what are the annual filing requirements for a nonprofit in Illinois and more.

Requirements Registration Registration Annual Filing Annual Filing
Required Forms

Required Forms

Nonprofit corporation (Form NFP 102.10) Form CO-1 (Charitable Organization Registration Statement)

Nonprofits should submit the respective federal 990 forms to the state.

If you have unrelated business income, file Form IL-990-T

Illinois Charitable Organization Annual Report Form AG990-IL
Due Date

Due Date

Before establishing a Nonprofit entity The organizations must register before they start soliciting any contributions. 15th day of 5th month After the accounting period ends Within six months after the end of the organization’s fiscal year-end
Filing Fee

Filing Fee

$50 $15 N/A $15 - $25

Frequently Asked Questions


How to Start a Nonprofit in Illinois?

You must complete the following registration procedures, in order to start a nonprofit in the state of Illinois.

Registration with the Office of the Secretary of State

To register your nonprofit, the state of Illinois requires you to register the Name of the organization and submit a Nonprofit corporation

Typically, this submission must include the following information:

  • Details of the registered agent, i.e., Name, Address, city, and ZIP code.
  • Details of the Board Directors.
  • Names & Addresses of incorporators.

In addition to these details, you must pay the incorporation filing fee of $50.

Registration with the Illinois Attorney General’s Office

  • The Illinois law requires charitable organizations to complete (Form CO-1) and pay a registration fee of $15.
  • Also, organizations that have been in operation for less than a year must file Form CO-2 along with the Form CO-1.


How to Obtain Tax-Exempt Status from the State of Illinois?

In addition to the federal tax exemption, nonprofits can obtain exemption from Illinois state and property taxes.

  • To apply for sales tax exemption, the organization must file STAX-1, Application for Sales Tax Exemption or apply for exemption at
  • To apply for property tax exemption, the organization must file one of the following forms with the required attachments, whichever is applicable.
  • Form PTAX-300 - Applicable for Educational and governmental organizations.
  • Form PTAX-300-FS - Applicable for Federal and state agencies.
  • Form PTAX-300-R - Applicable for Religious organizations.


What are the Illinois Annual Filing Requirements for Nonprofits?

As per Illinois state law, charitable organizations are required to complete their annual renewal to remain tax-compliant.

  • The organization has to submit its annual information to the State of Illinois by filing Form AG990-IL along with copies of its federal Form 990 or 990-EZ or 990-PF.
  • The soliciting organizations must pay a filing fee of $15 , if their gross receipts > $15,000 (or) assets > $25,000. Similarly, Trust Organizations registered under the Charitable Trust Act must pay a filing fee of $25, if gross receipts > $25,000.
  • Furthermore, if the nonprofit has an unrelated business income of $1000 or more, they must submit Form IL-990-T along with a copy of federal
    Form 990-T.


When is the deadline for Charitable Organization to file Form AG990-IL and Form IL-990-T?

Form AG990-IL:

The due date for the charitable registration is within six months after the end of the organization’s accounting period.

Form IL-990-T:

The deadline for filing Form IL-990-T is on or before 15th day of the 5th month following the end of the organization’s tax year.


Are there any penalties for non filing?

If your organization fails to file the required forms on time, a penalty of $250 or 2% of the tax amount will be imposed. In case of not filing a return within 30 days after receiving the notice of non-filing, an additional penalty will be imposed, whichever is greater of $250 or $2 of the tax owed.


How to file Form IL-990-T?

You can complete Form IL-990-T and mail (payment voucher)along with any taxes due to the state of Illinois. However, if the tax payment is $750 or more, you must pay them electronically. Here are the mailing addresses:

If a payment is enclosed with your return, mail your Form IL-990-T to:

Illinois Department of Revenue
PO BOX 19053,
IL 62794-9053.

If payment is not enclosed, mail your Form IL-990-T to:

Illinois Department of Revenue
PO BOX 19009,
IL 62794-9009.


How to file Form AG990-IL?

You can complete the Form AG990-IL on paper and send it by mail with all the required attachment and applicable fees to the address given below:

Office of The Attorney General Charitable Trust Bureau Attn: Annual Report Section
100 West Randolph Street, 11th Floor,
Chicago, Illinois 60601-3175.

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