Here's what forming an LLC in Illinois actually involves — the fees, the timeline, the ongoing obligations, and the official registry link, so you can file with confidence.
Illinois LLC at a glance
| State filing fee | $150 |
|---|---|
| Processing time | Processing times change — check current times on the official registry |
| Annual report / franchise | See the state’s current requirements on the official registry |
| Registered agent required? | Yes — physical Illinois address required |
| Official registry | Illinois Secretary of State business search → |
Steps to form an LLC in Illinois
- Name your LLC and check availability in the Illinois registry.
- Appoint a registered agent with a physical address in Illinois.
- File the Articles of Organization with Illinois and pay the fee.
- Get an EIN from the IRS (see how to get an EIN).
- Stay compliant — track any Illinois annual report and franchise obligations.
File your Illinois LLC
Partner link — we may earn a commission at no extra cost to you.
A formation service handles the filing and includes a registered agent. Form in Illinois via Northwest
Some links on this page are partner links. We may earn a commission at no extra cost to you — always labeled. For official filings you can use your state's .gov registry directly. This is general information, not legal or tax advice.
Frequently asked questions
How much does it cost to form an LLC in Illinois?
The Illinois state filing fee is $150. Any annual report or franchise fee is set by the state and published on its official registry.
How long does it take to form an LLC in Illinois?
Processing time in Illinois varies, and expedited options may be available. Check current processing times on the official registry before you file.
Do I need a registered agent in Illinois?
Yes. Every Illinois LLC must maintain a registered agent with a physical Illinois address. Non-residents must use a commercial service.