LLC Formation Requirements
Forming an LLC in Illinois requires a $150 filing fee paid to the Illinois Secretary of State. An annual report fee of $75 is due Annually before first day of anniversary month. Standard processing takes several business days. Expedited processing is available for $100, with a turnaround of . A registered agent with a physical address in Illinois is required. Illinois levies a state income tax on LLC members' pass-through income. Be aware that Illinois also imposes a franchise tax on LLCs.
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⚠ Tax Note
LLCs classified as corporations for federal tax purposes may be subject to Illinois replacement tax and applicable franchise taxes.
How much does it cost to form an LLC in Illinois?
The state filing fee to form an LLC in Illinois is $150. There is also an annual report fee of $75 due Annually before first day of anniversary month. Expedited processing costs an additional $100.
Do I need a registered agent for my Illinois LLC?
Yes. Illinois requires every LLC to maintain a registered agent with a physical address in the state. The registered agent receives official legal documents and government notices on behalf of your LLC.
Does Illinois have a franchise tax for LLCs?
Yes. Illinois imposes a franchise tax on LLCs. LLCs classified as corporations for federal tax purposes may be subject to Illinois replacement tax and applicable franchise taxes.
Does Illinois have a state income tax?
Yes. Illinois has a state income tax. As an LLC member, your share of the LLC's profits is subject to state income tax on your personal return, since LLCs are typically pass-through entities.
How long does it take to form an LLC in Illinois?
Standard processing time in Illinois is several business days. Expedited processing is available for $100 with a turnaround of .
Can I file my Illinois LLC online?
Yes. Illinois allows online LLC filing through the Secretary of State's website, which is typically the fastest and most convenient option.
What are the ongoing requirements for a Illinois LLC?
You must file an annual report and pay a $75 fee, due Annually before first day of anniversary month. You must also maintain a registered agent in the state. Franchise tax obligations also apply.
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Official Source
Illinois Secretary of State
More Illinois Resources
Data Methodology
DataTactic researchers verify LLC formation data directly against official government sources — Illinois Secretary of State publications, state statutes, and agency websites. Each data point is cross-referenced against primary sources before publication. Records are reviewed and updated when laws or requirements change.
Last verified: 2025-03-17 · Always confirm with official state sources before filing.