How to Start LLC in Illinois Step-by-Step Guide

How to Start LLC in Illinois Step-by-Step Guide

Starting Illinois LLC, step-by-step

Here are the steps to forming an LLC in Illinois:

Man describes the steps of LLC

  1. Choose an LLC Name
  2. Select a Registered Agent
  3. File the Articles of Organization
  4. Create an Operating Agreement
  5. Get an EIN
  6. Register with the Department of Revenue

If you want to form your LLC yourself, follow our comprehensive guide below at no cost.

For further details on LLC expenses, Explore the specifics of LLC costs in Illinois.

See "How Long Does It Take to Form an LLC in Illinois" to find out how long it will take to get your LLC approved and to make sure there are no delays.

Need to save time?

Consider hiring a professional to set up your LLC: Northwest Registered Agent offers LLC formation services starting at $39 plus the state fee.
(Find out why Northwest is the top choice for LLC formation)

Here are the steps to forming an LLC in Illinois

1. Search for your Limited Liability Company (LLC) Name

To ensure your Illinois LLC name is available and meets state requirements, follow these steps.

A man searching for an LLC name

First, search your business name. Entity Search tool to ensure it's unique and not already in use.

This is necessary because two businesses in the state cannot share the same name.


Second, check domain availability for an online presence Select a name that is memorable to the customer and best suited for the brand.

We'll explore the specifics of naming an LLC in Illinois in greater detail.

How do I check if my desired LLC name is available?

You can check the availability of your desired LLC name by searching the Illinois Secretary of State.

What are the naming requirements for the Illinois LLC?

The name must include "Limited Liability Company," "LLC," or "L.L.C." It must be distinguishable from other business names registered in Illinois and should not contain restricted words without approval.

Can I reserve a name for my LLC?

You can reserve a name for up to 90 days by filing a Name Reservation application with a $25 cost.

2. Find a Registered Agent in Illinois

A man finds the Agent

The next step is to select the Illinois Registered Agent.


A person or organization appointed to accept official notices and legal communications on behalf of your LLC may function as your LLC's registered agent in Illinois. To carry out this function efficiently, they must have a physical address inside the state.

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Who is eligible to serve as an LLC Registered Agent?


Your LLC's registered agent can be you.

  • A trusted friend or family member
  • A professional Registered Agent Service
  • You

They must have a physical address in Illinois, as PO Boxes are not acceptable.

The Registered Agent's details are available to the public in state records.

If you prioritize privacy or lack a physical Illinois address, a Registered Agent Service could be beneficial.

What is a Registered Agent?

A Registered Agent is a person or entity designated to receive legal documents and official government communications on behalf of the LLC.

Who can be a Registered Agent in Illinois?

The Registered Agent can be an individual resident of Illinois or a business entity authorized to do business in Illinois. The agent must have a physical street address in Illinois (no P.O. boxes).

Can I act as my Registered Agent?

Yes, if you meet the residency and physical address requirements, you can act as your Registered Agent.

3. File the Illinois LLC Articles of Organization

A man with file formation

Prepare and submit the Articles of Organization to the Illinois Secretary of State.

Guide for completing the articles. Including details like your name and registered agents.


Filing the Illinois LLC Articles of Organization costs $150 when submitted online. This is a one-time cost to create your LLC.


If you want to file this yourself, see our step-by-step guide: ?.

How do I file the Articles of Organization?

You can file the Articles of Organization online or by mail with the Illinois Secretary of State, Business and Professional Licensing. The filing fee is $150.

What information is required in the Articles of Organization?

The Articles of Organization must include the LLC’s name, principal office address, registered agent information, and the names and addresses of the organizers.

How long does it take to process the Articles of Organization?

Processing times can vary. Online filings are typically processed within a few business days, while mail filings may take longer.

4. Create the Illinois LLC Operating Agreement

A man representing the creation of an Alabama LLC Operating Agreement.

An Illinois LLC Operating Agreement is like a companion document to an Articles of Organization. The articles create your LLC, while the Operating Agreement explains who owns it.


Banks may require it to open your LLC business bank account, and it is important in court to prove your LLC is running correctly.


That's why we recommend that all LLCs, including Single-Member LLCs, have an Operating Agreement.


Operating Agreement is essential in legal proceedings because it serves as evidence that your LLC operates by proper governance practices, bolstering your defense in court.


An Operating Agreement is an internal document, so you don’t need to file it with the IRS. Just keep a copy in your business records for your reference.

Need to save time?

Consider hiring a professional to set up your LLC: Northwest Registered Agent offers LLC formation services starting at $39 plus the state fee.
(Find out why Northwest is the top choice for LLC formation)

What is an Operating Agreement?

An Operating Agreement is a document that outlines the ownership, management structure, and operating procedures of the LLC.

Is an Operating Agreement required in Illinois?

While not legally required, it is highly recommended to have an Operating Agreement to establish clear rules and prevent disputes.

What should be included in an Operating Agreement?

The Operating Agreement should include details on member roles and responsibilities, voting rights, profit distribution, management structure, and procedures for adding or removing members

5. Get an EIN for LLC

Getting an Illinois EIN from the IRS for LLC.

Man represents the process of EIN.

An EIN (Employer Identification Number) is needed for:


  • Identifying tax purposes
  • Open the business bank accounts
  • Apply for licenses and permits

How do I apply for an EIN?

You can apply for an EIN online through the IRS, by mail, or by fax.

How much does an EIN cost?

Obtaining an EIN from the IRS comes at no cost. The application process is free.

How much time does it take to receive an EIN?

When applying online, you will receive your EIN immediately.


If you choose to apply by mail or fax, it can take four weeks.

Why do I need an EIN for my LLC?

An EIN is required for federal tax purposes, hiring employees, opening a business bank account, and fulfilling other business-related requirements.

How can I obtain an EIN?

For US Citizens or Residents: If you possess an SSN or ITIN, you are eligible to apply for an EIN online. Simply follow these steps: Apply for an EIN online.

For Non-US Residents: You are unable to obtain an EIN online, but you can still acquire one through fax or mail. Follow these steps to get an EIN without an SSN or ITIN.

6. Register with the Department of Revenue

Illinois doesn’t require a general business license. However, LLCs must register with the Department of Revenue.

This registration provides a Certificate of Registration and a Taxpayer ID, both of which are free. The Certificate of Registration functions like a business license, and the Taxpayer ID is different from the federal EIN.

Depending on your LLC location, you may need a local business license or permit.

What ongoing state requirements must Illinois LLCs fulfill?

Once your LLC is established, you'll need to meet the following ongoing state requirements to maintain compliance: File an annual report with the Illinois Secretary of State, which includes updated information about your LLC, and pay the $75 filing fee.


Additionally, ensure your LLC meets all state tax obligations, including sales tax and employment taxes, if applicable.

What Should I Do after the LLC is Approved?

Business bank account for Illinois LLC

Opening a business bank account for your Illinois LLC is essential to keep personal and business finances separate. This separation helps maintain accurate financial records, simplifies tax filing, and protects your assets in case of legal issues.

Illinois Licenses and Permits

Illinois LLCs may require various licenses and permits depending on their location, industry, and business activities.

Taxes for Illinois LLC

Illinois LLCs are subject to several taxes, including federal and state income taxes, sales taxes (if applicable), and payroll taxes if the LLC has employees. Understanding and complying with these tax obligations is crucial to avoiding penalties and maintaining good standing with tax authorities.

Annual Report Requirement

Illinois LLCs must file an Annual Report each year to the Illinois Secretary of State. This report updates the state with any changes to the LLC's business details and requires payment of a filing fee. Keeping this report current ensures that your LLC remains in good standing and compliant with state regulations.