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

Securing an Employer Identification Number (EIN) is a crucial step for your Subscription SaaS business in Illinois. This guide provides a clear roadmap for obtaining your EIN in 2026, ensuring you're set up for success. Let Lovie's AI-powered platform streamline the process for you.

What is an EIN?

An EIN, or Employer Identification Number, is a unique nine-digit number assigned by the IRS to identify your business entity. Think of it as a Social Security number for your company. It's essential for various business activities, including opening a bank account, hiring employees, and filing taxes.

How to Apply for an EIN

  1. Determine Your Eligibility: Confirm that your Subscription SaaS business entity (LLC, S-Corp, C-Corp) is eligible for an EIN. Generally, any business operating as a corporation or with employees needs one.
  2. Choose Your Filing Method: You can apply for an EIN online through the IRS website, by fax, or by mail. The online application is the fastest and most convenient method.
  3. Complete the IRS Form SS-4: Fill out IRS Form SS-4, Application for Employer Identification Number. You'll need to provide information about your Subscription SaaS business, such as its legal name, address, responsible party, and the reason for applying.
  4. Submit Your Application: If applying online, submit the completed Form SS-4 electronically through the IRS website. If applying by fax or mail, send the form to the appropriate IRS address based on your state.
  5. Receive Your EIN: If you apply online, you'll typically receive your EIN immediately after submitting the application. If applying by fax or mail, it can take several weeks to receive your EIN.
  6. Store Your EIN Safely: Keep your EIN in a secure location, as it's sensitive information. You'll need it for various business activities, such as opening a bank account, filing taxes, and applying for licenses and permits.

Start your formation with Lovie — $20/month, everything included.