Every official charge for forming an LLC in Illinois in 2026: the filing fee, the other mandatory state costs, the documents you need, and the filing office's own contact details — taken from the state's published sources, not from a filing service.
| Charge | Amount |
|---|---|
| Filing fee — Articles of Organization | $150 |
| First-year minimum total | $150 |
The total is the cheapest filing channel plus the fixed mandatory charges that fall due in year one. Variable charges are listed at “No fixed fee” and are not folded into the total.
| Standard filing | $150 |
Secretary of State online instructions: 'Articles of Organization - $150 (10 business days); $250 (24-hour service)'. The LLC Publications and Forms table lists Form LLC 5.5 at $150 with an additional $100 expedited fee, and states no separate paper fee, so a single $150 standard fee is recorded and online_usd/paper_usd are left null. A payment processor fee is added to card transactions (amount not stated). Articles for an LLC able to establish a series cost $400 ($500 with 24-hour service).
File through the official portal above — third-party filing services charge extra for the same filing.
Articles of Organization: Form LLC-5.5, filed with the Illinois Secretary of State, Department of Business Services, online or by mail.
Once the LLC is formed, these pages work out what it keeps: Illinois Tax Brackets · Illinois Income Tax Calculator · Illinois Paycheck Calculator.
Illinois requires a annual report — fee $75.
Due before the first day of the LLC's anniversary month each year; under 805 ILCS 180/50-1(b) the annual report must be delivered to the Secretary of State within the 60 days immediately preceding the first day of the anniversary month.
Form LLC-50.1, Limited Liability Company Annual Report, listed at $75 in the Secretary of State's LLC Publications and Forms table (additional expedited fee $50). Form LLC-50.1 itself states a late filing penalty of $100 applies if the report is not filed within 60 days after the due date.
Illinois's first-year minimum of $150 sits in the full ranking of all 51 jurisdictions — the cheapest first year is Montana at $35 and the most expensive is California at $870.
Official sources — fees verified 3 November 2026:
https://www.ilsos.gov/departments/business-services/organization/llc-instructions.html
https://www.ilsos.gov/publications/business-services/llc.html
Forming an LLC in Illinois? This page lists every official state charge for 2026 — filing fee, mandatory extras, the annual report and the documents — with the filing office's own phone, website and portal.
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Every official charge for forming and keeping an LLC in Illinois in 2026: a $150 filing fee for the Articles of Organization, a first-year minimum of $150, the documents the state asks for, and the filing office's own phone, website and portal — read from the state's published sources, not a filing service's price list.
Forming an LLC in Illinois: you pay $150 to file the Articles of Organization with the Illinois Secretary of State. With the mandatory year-one charges counted, your first-year minimum is $150; after that the recurring state cost is $75 annual report.
Every figure comes from the state's own published fee schedule or statute (the page lists its official sources) and was checked on 3 November 2026. The first-year minimum is the cheapest filing channel plus the fixed mandatory charges that fall due in year one; annual report fees fall due after year one, and variable charges such as newspaper publication have no fixed amount, so both are shown separately rather than folded into the total.
Filing the Articles of Organization costs $150 at the cheapest channel. Counting the mandatory state charges that fall due in year one, the first-year minimum is $150. Registered-agent services and local licences are extra and are not state charges.
Illinois requires a annual report costing $75. Due before the first day of the LLC's anniversary month each year; under 805 ILCS 180/50-1(b) the annual report must be delivered to the Secretary of State within the 60 days immediately preceding the first day of the anniversary month.
Articles of Organization (Form LLC-5.5); Registered agent and registered office in Illinois. You will also need a free EIN from the IRS — a federal step that is the same in every state.
You file with the Illinois Secretary of State, Department of Business Services. Phone: 217-782-6961. No email address is published — the office takes enquiries through the contact form on its website. File online at https://www.ilsos.gov/departments/business-services/organization/llc-instructions.html.
No — beyond the Articles of Organization filing fee and the annual report, Illinois records no other mandatory state charges for a standard LLC.
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