Illinois LLC Cost and Fees Breakdown (2026): What You'll Actually Pay
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If you’re budgeting for a new business in the Land of Lincoln, you need a real Illinois LLC cost and fees breakdown, not just a headline number. The state filing fee is $150, but that’s only the starting line. Between annual reports, registered agent service, optional expedited processing, and a formation service if you don’t want to do the paperwork yourself, your actual first-year cost can range anywhere from $150 to over $500 depending on how you handle it.
The good news: forming an LLC in Illinois is genuinely cheap compared to states like California ($800 minimum franchise tax) or New York (with its costly newspaper publication requirement). Most people can get an Illinois LLC filed and compliant for less than a nice dinner out. Services like ZenBusiness will handle the entire filing for $0 plus the state fee, which is often the fastest way to avoid the paperwork mistakes that trip up first-time filers. Below, we break down every fee — mandatory and optional — so you know exactly what you’ll pay in 2026, plus where you can legitimately cut costs without cutting corners.
Illinois LLC Costs at a Glance
Here’s the full Illinois LLC cost and fees breakdown in one table before we go line by line:
| Cost Item | Amount | Frequency |
|---|---|---|
| Articles of Organization (Form LLC-5.5) | $150 | One-time |
| Expedited 24-hour filing | +$100 | Optional, one-time |
| Name reservation (Form LLC-1.15) | $25 | Optional, one-time |
| Annual Report (Form LLC-50.1) | $75 | Every year |
| Late annual report penalty | $100 | If missed |
| Registered agent (self-serve) | $0 | Ongoing |
| Registered agent (commercial service) | $99–$300/year | Ongoing |
| Assumed name (DBA) | $150 | Renews every 5 years |
| Foreign LLC registration in Illinois | $150 | One-time (if applicable) |
| EIN from the IRS | $0 | One-time |
| BOI report (FinCEN) | $0 to file | Most domestic LLCs now exempt |
That’s the entire menu. Nothing else is legally required at the state level, which is part of why Illinois consistently ranks as a mid-tier-cost, business-friendly state to form in.
Illinois LLC Filing Fee: The $150 Articles of Organization
The core of any Illinois LLC cost and fees breakdown starts with the Articles of Organization, filed as Form LLC-5.5 with the Illinois Secretary of State’s Department of Business Services. The filing fee is a flat $150 whether you file online or by mail, and it’s the same regardless of your LLC’s size, industry, or number of members.
Standard processing typically takes around 7–10 business days for mail filings, and online filings are usually processed faster. If you’re in a hurry — say, you need a bank account open by Friday — Illinois offers 24-hour expedited processing for an additional $100, bringing your total state cost to $250. That’s a meaningful premium, so I’d only recommend paying for expedited service if you have a real deadline (a signed lease, an investor requiring an EIN, a contract that needs a business entity behind it).
If you’re not ready to file immediately but want to lock in your business name, Illinois lets you reserve it for 90 days using Form LLC-1.15 for a $25 fee. It’s optional and most people skip it, but if you’re still finalizing your operating agreement or waiting on a trademark search, it’s cheap insurance against someone else grabbing your name first.
Illinois LLC Annual Report Fee: $75 Every Year
This is the fee that catches people off guard, because it’s easy to treat LLC formation as a one-time expense. It isn’t. Illinois requires every LLC to file an annual report (Form LLC-50.1) and pay a $75 fee every single year to stay in good standing — a detail we cover in full in our Illinois LLC annual report filing guide.
The report is due before the first day of your LLC’s anniversary month — so if you formed your LLC in March, your annual report is due each year before March 1st. You can file up to 60 days early, and I’d genuinely recommend doing so. In my experience helping people troubleshoot compliance issues, missed annual reports are the single most common reason small Illinois LLCs slip out of good standing — not because owners don’t care, but because the deadline isn’t tied to a calendar-year date like taxes are, so it’s easy to lose track.
Miss the deadline and Illinois tacks on a $100 late penalty. Ignore it long enough and the state can administratively dissolve your LLC, which means losing your liability protection and having to go through a reinstatement process to get it back — an entirely avoidable cost if you just calendar the date or let a registered agent service send you reminders.
Registered Agent Costs in Illinois
Every Illinois LLC is legally required to designate a registered agent with a physical street address in Illinois (a P.O. box doesn’t qualify) who is available during business hours to accept legal documents and state correspondence.
You have two real options:
Serve as your own registered agent — free, but it means your name and home or office address become part of the public record, and you need to be reliably present at that address during business hours. Miss a certified mail delivery for a lawsuit notice, and you could end up with a default judgment against you.
Hire a commercial registered agent — typically $99 to $300 per year depending on the provider. This keeps your personal address off public filings, gives you a professional point of contact for legal mail, and usually comes with compliance reminders so you don’t miss that $75 annual report.
This is genuinely one of the areas where Northwest Registered Agent stands out — it built its entire reputation on registered agent privacy and has become the go-to option specifically when keeping your home address private is the priority. If anonymity is your main concern, it’s worth a look via our registered agent guide. For most everyday filers, though, bundling registered agent service into a full formation package tends to be the better value — ZenBusiness, for instance, includes a full year of registered agent service free on its paid plans, and LegalZoom offers similar bundling at a higher renewal rate of roughly $249/year after year one.
Optional and Hidden Illinois LLC Costs
Beyond the mandatory line items, a few costs catch new owners by surprise:
- Assumed name (DBA): If you want to operate under a name different from your LLC’s legal name, Illinois charges $150 to register an assumed name, and it must be renewed every 5 years for another $150.
- Foreign LLC registration: If you formed your LLC in another state (say, Wyoming for privacy reasons) but do business in Illinois, you’ll need to register as a foreign LLC using Form LLC-45.5, another $150 fee, plus a Certificate of Good Standing from your home state.
- EIN: Getting an Employer Identification Number directly from the IRS is completely free. If a formation service charges you separately for this, you’re paying for convenience, not a government fee.
- Operating agreement: Illinois doesn’t require you to file one with the state, but skipping it is a mistake — without one, courts default to Illinois’s generic LLC statute to settle member disputes, which rarely matches what you actually intended. Most formation services include a template for $0–$50; you can also review our LLC operating agreement guide if you want to draft your own.
- BOI reporting: Under the Corporate Transparency Act, LLCs were originally required to file Beneficial Ownership Information reports with FinCEN. That changed in 2025 — FinCEN issued an interim final rule exempting U.S.-formed companies from BOI reporting entirely, narrowing the requirement to foreign entities registered to do business in the U.S. It’s a fast-moving area of federal regulation, so check our BOI report changes and updates for 2026 before assuming you’re fully in the clear, and confirm current status directly on FinCEN’s BOI page.
One genuinely good piece of news for this Illinois LLC cost and fees breakdown: unlike Illinois corporations, which were subject to a franchise tax based on paid-in capital before it was fully phased out by 2024, Illinois LLCs have never owed a state franchise tax. That alone makes the LLC structure noticeably cheaper to maintain long-term than a C-corp formed in the same state.
How to Form Your Illinois LLC for the Least Money
If your main goal is minimizing the total cost to form an LLC in Illinois, you have three real paths:
File it yourself. Total cost: $150 (plus $25 if you reserve a name, and $0 if you act as your own registered agent). This is the cheapest possible route, and Illinois’s filing portal is straightforward enough that a DIY filing is realistic for most people.
Use a budget-friendly formation service. ZenBusiness offers a $0 formation plan (you only pay the $150 state fee) and its paid tiers, running roughly $199–$349, add a free year of registered agent service, an operating agreement template, and compliance alerts — which, in my view, is worth it for anyone who’d otherwise forget the $75 annual report deadline. LegalZoom offers a comparable free-formation option but its add-ons (registered agent, compliance tracking) tend to run higher after the first year, often landing near $249 annually versus ZenBusiness’s typical $199 renewal.
Use an attorney-backed service if your situation is more complex — multiple members, outside investors, or unusual ownership splits. LLC Attorney provides actual attorney review of your formation documents, which costs meaningfully more than a template-based service but can be worth it if you’re not confident your operating agreement covers every contingency.
Here’s how the major formation services compare on an Illinois LLC:
| Service | Starting Price + $150 State Fee | Registered Agent | Best For |
|---|---|---|---|
| ZenBusiness | $0 (Starter), up to $349 (Premium) | Free 1st year on paid plans | Best all-around value |
| LegalZoom | $0 (Basic), up to $299 (Premium) | ~$249/year after year one | Brand recognition, add-on services |
| Tailor Brands | $0, up to $249 | Available as add-on | Bundling branding/logo with formation |
| Inc Authority | $0 (formation only) | Sold separately | Bare-bones free filing |
| Northwest Registered Agent | $39 | Free 1st year, renews ~$125/year | Best for privacy |
| Bizee | $0 | Free 1st year | Budget-conscious filers |
| LLC Attorney | Attorney-reviewed, premium pricing | Included | Complex ownership structures |
A quick reality check on “free” formation: the $0 plans from ZenBusiness, LegalZoom, Inc Authority, and Bizee all still require you to pay Illinois’s $150 state fee — that part is never optional, no matter which service you use. What differs is what happens after formation: some services nickel-and-dime you for the operating agreement, EIN application, or registered agent renewal, while others bundle those in. Read the fine print before you compare quotes. Our full best LLC formation services comparison breaks this down service by service if you want more depth than we can cover here.
Illinois LLC Costs vs Other States
Context helps here. Illinois’s $150 filing fee and $75 annual report put it solidly in the middle of the pack nationally — cheaper than states like Massachusetts ($500 filing fee) but pricier upfront than Kentucky or Arkansas. Where Illinois really wins is the absence of an LLC franchise tax, which separates it from California’s punishing $800 minimum annual franchise tax regardless of income, and from Delaware’s $300 flat annual franchise tax.
If you’re weighing whether to form in Illinois versus your home state or a “cheap” state like Wyoming, remember that forming out-of-state doesn’t exempt you from Illinois fees if you actually operate here — you’d just be paying Illinois’s foreign LLC registration fee on top of your formation state’s costs, which almost always costs more overall. For most Illinois-based small businesses, forming directly in Illinois is the cheaper and simpler path. If you haven’t started yet, our step-by-step guide to starting an LLC in Illinois walks through the full process.
It’s also worth noting the broader trend: the U.S. Census Bureau’s Business Formation Statistics have shown new business applications remaining historically elevated through 2025 and into 2026, meaning state filing offices — including Illinois’s — are processing higher volumes than a decade ago. That’s part of why online filing and expedited processing exist, and why formation services that track your annual report deadline have become more valuable, not less.
Frequently Asked Questions
How much does it cost to start an LLC in Illinois in 2026? The mandatory state filing fee is $150 for the Articles of Organization. If you handle everything yourself with no add-ons, $150 is your total out-of-pocket cost to legally form the LLC. Ongoing costs include a $75 annual report fee every year.
Do I need a registered agent for an Illinois LLC? Yes. Illinois law requires every LLC to maintain a registered agent with a physical Illinois street address. You can serve as your own agent for free or pay a commercial service, typically $99–$300 per year, for added privacy and compliance reminders.
What happens if I don’t file my Illinois LLC annual report? You’ll owe a $100 late penalty on top of the $75 fee, and continued non-compliance can lead to the state administratively dissolving your LLC, which strips away your liability protection until you go through reinstatement.
Is there an Illinois LLC franchise tax? No. Unlike Illinois corporations, which paid a franchise tax based on paid-in capital before it was fully repealed by 2024, LLCs in Illinois have never been subject to a state franchise tax.
Can I get an EIN for free? Yes. The IRS issues Employer Identification Numbers at no cost through its online application. Any formation service charging a separate “EIN fee” is charging for convenience, not a government requirement.
Do I still need to file a BOI report for my Illinois LLC in 2026? Under a 2025 FinCEN interim final rule, most U.S.-formed companies, including domestic Illinois LLCs, are now exempt from Beneficial Ownership Information reporting. Foreign entities registered to do business in the U.S. still generally must file. Because this area of federal regulation has shifted quickly, confirm your current obligation on FinCEN’s official BOI page before assuming you’re exempt.
Is it cheaper to use a formation service or file myself? Filing yourself is cheapest on paper ($150 total), but formation services like ZenBusiness often charge $0 plus the state fee for basic formation, meaning the cost difference is minimal while you gain guided filing, an operating agreement template, and compliance reminders that can save you from a $100 late penalty down the road.
How long does it take to form an LLC in Illinois? Standard processing runs roughly 7–10 business days. Illinois offers 24-hour expedited processing for an additional $100 if you need your LLC formed faster.
The Bottom Line
The full Illinois LLC cost and fees breakdown really comes down to two numbers you can’t avoid — the $150 formation fee and the $75 annual report — plus a handful of optional costs that depend on how much convenience and privacy you want to pay for. For most first-time owners in 2026, a service like ZenBusiness hits the best balance of low cost and built-in compliance tracking, with LegalZoom as a solid, more brand-recognized alternative. Whichever route you take, the total cost to legally operate an Illinois LLC remains modest compared to many other states — just don’t forget that $75 comes due every year, not just once.
The author name used in this article may be a pen name or pseudonym and is used for illustrative and editorial purposes only. This article is for informational purposes only and does not constitute investment, tax, or legal advice. State fees, regulations, and requirements referenced here are subject to change; consult qualified professionals, including a licensed attorney or CPA, and verify current fees directly with the Illinois Secretary of State before making financial or legal decisions.
Sarah Mitchell
Sarah has researched and tested over 20 LLC formation services since 2021. She has personally formed LLCs in 5 states.