2026 Guide · Updated for Illinois

How to Start an LLC in Illinois (2026 Guide)

Forming an LLC in Illinois takes three steps: pick a name, appoint a registered agent, and file your Articles of Organization. We'll walk you through each — or do the whole thing for you in 5 minutes.

Illinois filing fee
$150.00
Typical processing
5–15 business days
LaunchLogic service fee
$299.00
1

Step 1: Choose a Name for your Illinois LLC

Your LLC name must be unique in Illinois and include an identifier like "LLC," "L.L.C.," or "Limited Liability Company." Avoid restricted words (Bank, Insurance, University) without proper approval.

Quick tips:

  • Search the Illinois Secretary of State business database for availability.
  • Check domain and social handle availability for your name.
  • Optionally reserve the name with the state while you finalize paperwork.
2

Step 2: Appoint a Illinois Registered Agent

Illinois requires every LLC to designate a registered agent — a person or company with a physical address in Illinois who can accept legal mail and state notices during business hours.

Registered Agent Service in Illinois

Stay private. Stay compliant. We act as your Illinois registered agent, scan your mail, and remind you of every deadline.

  • Legal mail receiving
  • Compliance reminders
  • Privacy protection
  • State document handling
$99
per year
Get Registered Agent — $99/yr
3

Step 3: File your Articles of Organization

Submit your Articles of Organization to the Illinois Secretary of State. This document lists your LLC's name, address, registered agent, and members. Once approved, your LLC officially exists.

Illinois filing fee

$150.00

This fee goes directly to the Illinois Secretary of State. It's required regardless of who prepares the paperwork — and LaunchLogic always passes it through at cost, no markups.

Why founders pick LaunchLogic

  • Flat pricing

    No upsell games. Service fee + your state's fee. That's it.

  • Real humans

    US-based support if anything in your filing needs a second look.

  • Fast filings

    Most prep done in under 24 hours. State approval follows their timeline.

Frequently asked questions

How much does it cost to start an LLC in Illinois?+

The Illinois state filing fee is $150.00. With LaunchLogic's service fee of $299.00, your total is $449.00.

How long does it take to form an LLC in Illinois?+

Most Illinois LLC filings are approved in 5–15 business days. Expedited processing may be available depending on the state.

Do I need a registered agent in Illinois?+

Yes. Illinois requires every LLC to have a registered agent with a physical address in the state. LaunchLogic offers Registered Agent service for $99/year.

Can I file my LLC myself?+

Yes, you can file directly with the Illinois Secretary of State. LaunchLogic handles the paperwork, compliance reminders, and gives you peace of mind so you can focus on your business.

Illinois filing · $299.00 + $150.00
$449.00 total
Start filing