Updated May 2026 Illinois
Illinois LLC Formation Cost (2026)
Complete breakdown of Illinois LLC costs — from the initial filing fee to annual report fees, publication requirements, and ongoing taxes.
LegalCostCalculator Editorial Team
Data sourced from official government websites · Last reviewed:
$150
Filing Fee
One-time
$75
Annual Report
Recurring
None
Publication Cost
$150+
Est. Year-1 Total
Excl. annual fee
LLC Formation Cost Calculator
Select your state to see filing fees, annual report costs, and formation gotchas.
Filing Fee
Annual Report
Publication Cost
Franchise Tax
Estimated Year-1 Cost
Source: Official SOS website
· Filing: · Est. Year 1:
Form LLC → Forming an LLC in Illinois: Full Cost Breakdown
To form an LLC in Illinois, you file Articles of Organization (sometimes called a Certificate of Formation or Certificate of Organization) with the Illinois Secretary of State. The state filing fee is $150.
Standard processing time is 10. Expedited processing is available: 24.
Watch out: Illinois processing time can be slow — up to 10 business days for standard filing.
Pro tip: Chicago access — major market for B2B and professional services.
Source: Illinois Secretary of State ↗
Sponsored
Form Your Illinois LLC Today
Let a trusted formation service handle the paperwork for $150 + their service fee. Available same-day in most cases.
Start My LLC →Frequently Asked Questions — Illinois LLC
How much does it cost to form an LLC in Illinois?
Illinois LLC formation costs vary by state. Use our calculator above to find the exact amount for your state. Fees are updated regularly from official state and court sources.
What is the LLC filing fee in Illinois?
Illinois LLC formation costs vary by state. Use our calculator above to find the exact amount for your state. Fees are updated regularly from official state and court sources.
Does Illinois require an annual report for LLCs?
Illinois LLC formation rules vary by state. See our complete state-by-state breakdown above for the most current information, sourced directly from official court and government websites.
Does Illinois require LLC publication?
Illinois LLC formation rules vary by state. See our complete state-by-state breakdown above for the most current information, sourced directly from official court and government websites.
What is the Illinois LLC franchise tax?
What is the Illinois LLC franchise tax is an important aspect of Illinois LLC formation. Requirements and limits vary by state. Our state-by-state data above covers the key figures you need, sourced from official government websites.
How do I form an LLC in Illinois?
Eligibility requirements for Illinois LLC formation depend on your state's specific rules. Our calculator provides the key thresholds and requirements by state. For legal advice on your specific situation, consult a licensed attorney.