Illinois LLC Formation Cost Calculator
Estimate the total cost to form your LLC in Illinois, including the state filing fee and optional services.
What does it cost to form an LLC in Illinois?
Forming a Limited Liability Company in Illinois starts with a state filing fee — the cost of submitting your Articles of Organization (or Certificate of Formation) to the Illinois Secretary of State. That fee is currently around $150 in Illinois. This one-time fee is mandatory and non-negotiable; there is no way to form a legal LLC in Illinois without paying it.
Registered agent service in Illinois: do you need it?
Every LLC formed in Illinois must designate a registered agent — a person or company available at a physical address in the state during business hours to receive legal documents and state correspondence. You can serve as your own registered agent for free if you have a physical address in Illinois and are reliably available, but many business owners pay a commercial registered agent service (typically around $100-150 per year) for privacy, convenience, or because they don't reside in Illinois.
Operating agreements: DIY, template, or attorney-drafted
An operating agreement outlines how your Illinois LLC is owned, managed, and how profits are distributed. Illinois likely doesn't legally require one for every LLC, but it's strongly recommended for any LLC with more than one member, and even useful for single-member LLCs to reinforce liability protection. A free or low-cost template can work for a very simple, single-owner LLC, but multi-member LLCs, or those with complex profit-sharing or management structures, often benefit from an attorney-drafted agreement (typically a few hundred dollars) to avoid disputes down the road.
Frequently Asked Questions
How much does it cost to form an LLC in Illinois?
The Illinois state filing fee is currently around $150. Add optional costs like a registered agent service (~$125/year) or an attorney-drafted operating agreement (~$300) and total upfront costs often land between $150 and $575 in Illinois.
What is the Illinois LLC filing fee?
The current Illinois LLC filing fee is approximately $150, paid directly to the Illinois Secretary of State (or equivalent agency) when you submit your Articles of Organization. Fees can change, so confirm the current amount before filing.
Do I need a registered agent in Illinois?
Yes, every LLC formed in Illinois is legally required to have one, but you can serve as your own registered agent for free if you have a physical address in Illinois and are available during business hours. Many owners pay for a commercial service instead, for privacy or convenience.
Do I really need an operating agreement in Illinois?
Most states, including likely Illinois, don't legally require one, but it's still strongly recommended, especially for multi-member LLCs, since it clarifies ownership, management, and profit-sharing and helps reinforce your liability protection.
Should I form my LLC in Illinois or a state like Delaware or Wyoming?
Delaware and Wyoming are popular for their business-friendly laws, but if you operate primarily in Illinois, you'll likely need to register there as a foreign LLC anyway, effectively paying two states' fees. For most small, single-state businesses operating in Illinois, forming there directly is simpler and cheaper.
Are there ongoing costs after forming an LLC in Illinois?
Many states, potentially including Illinois, require an annual report fee or franchise tax to keep your LLC in good standing, and registered agent services typically renew annually if you use one. These recurring costs are separate from the one-time formation fee estimated above — check Illinois's specific requirements.
Can I form an LLC myself in Illinois without a formation service?
Yes. Filing the Articles of Organization directly with the Illinois Secretary of State is straightforward for most simple, single-member LLCs, and it avoids paying a formation service's markup on top of the $150 state filing fee.