How to Get an EIN for Your Nonprofit Business in Illinois (2026)

Forming a nonprofit in Illinois requires several key steps, and obtaining an Employer Identification Number (EIN) from the IRS is one of the most crucial. This guide provides a comprehensive overview of how to get an EIN for your Illinois-based nonprofit organization in 2026.

What is an EIN?

An Employer Identification Number (EIN) is a unique nine-digit number assigned by the IRS to identify business entities operating in the United States. It's essentially a Social Security number for your organization. Nonprofits use their EIN to open bank accounts, apply for grants, and fulfill various legal and tax obligations.

How to Apply for an EIN

  1. Determine Eligibility: Ensure your Illinois nonprofit is eligible for an EIN. Generally, any organization that intends to hire employees or operate as a corporation or partnership (even a nonprofit one) needs an EIN.
  2. Gather Required Information: Collect all necessary information before starting the application. This includes the legal name of your Illinois nonprofit, its address, the name and Social Security number of the responsible party (e.g., the president or treasurer), and the reason for applying for the EIN.
  3. Complete the IRS Form SS-4: You can apply for an EIN online through the IRS website. The online application uses a wizard that guides you through the process of completing Form SS-4, Application for Employer Identification Number.
  4. Submit the Application: If applying online, submit the completed Form SS-4 electronically through the IRS website. If mailing or faxing, send the form to the appropriate IRS address or fax number based on your state (check the IRS instructions for Form SS-4).
  5. Receive Your EIN: Upon successful submission, you will receive your EIN. If you applied online, you'll receive it immediately. If you mailed or faxed the application, the IRS will send you a confirmation letter with your EIN.
  6. Verify EIN: After receiving your EIN, it's a good practice to verify its validity with the IRS. You can do this by calling the IRS Business & Specialty Tax Line.

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