
How to Start an LLC in Illinois: $0 + $150 State Fee (2026)
Forming an LLC in Illinois costs $150 to file Articles of Organization (Form LLC-5.5) with the Illinois Secretary of State. Every Illinois LLC must name a registered agent with a physical street address in the state. An annual report is due on the first day of the anniversary month and costs $75. Online filings clear in 7 to 10 business days and mail filings take 3 to 4 weeks. No US citizenship or residency is required to own one.






