The truth is, forming an Illinois LLC isn't a single price tag. Your total spend depends on filing speed, whether you hire a registered agent, what licenses your industry requires, and whether you DIY the paperwork or use a formation service.
This guide breaks down the exact state fees, the costs people forget to budget for, and what ongoing compliance actually looks like — so you can plan your Illinois LLC budget without surprises.
TL;DR
- Minimum cost: $150 one-time filing fee, plus a $75 annual report thereafter
- Price drivers: Expedited processing (+$100), series LLC filing ($400), registered agent, or DBA add-ons
- Lower costs: DIY filers and single-member LLCs handling their own paperwork
- Higher costs: Series LLCs, Chicago-based businesses needing local licenses
- Worth paying for: Registered agent services and expedited filing when privacy or speed matter
How Much Does It Cost to Form an LLC in Illinois?
Illinois LLC costs aren't fixed. They depend on your filing method, which add-ons you choose, and your business type. Most owners get tripped up by the same three oversights.
Common budgeting mistakes:
- Underbudgeting for the recurring $75 annual report
- Forgetting registered agent renewal fees stack up every year
- Missing Illinois's tiered DBA fee structure, which changes based on the calendar year
Typical Cost Ranges
Here's how the numbers typically break down across three tiers:
| Tier | Cost Range | What's Included |
|---|---|---|
| DIY/Basic | $150 – $225 | Filing fee + optional name reservation |
| Standard | $225 – $500 | Filing fee + registered agent + operating agreement template |
| Premium | $500 – $1,000+ | Expedited filing, series LLC setup, attorney-drafted documents |
Keep in mind: these figures typically cover state filing costs only. They often exclude the annual report and any license renewals you'll owe later.
What each tier includes:
- DIY/Basic: Just the Articles of Organization filing, with you as your own registered agent. Best for solo entrepreneurs comfortable tracking their own deadlines.
- Standard: Adds a professional registered agent and a basic operating agreement template. Suits small business owners who want compliance support without hiring an attorney.
- Premium: Includes expedited filing, series LLC setup, and attorney-drafted documents. Built for multi-entity businesses, real estate investors using series LLCs, or anyone needing a fast turnaround.
Key Factors That Affect the Cost of an Illinois LLC
Illinois LLC pricing hinges on three things: your entity structure, your filing choices, and your ongoing operational needs. Here's what moves the needle most.
LLC Type or Structure
A standard LLC costs $150 to file. A series LLC costs $400, according to the Illinois Secretary of State's LLC filing instructions. The higher fee reflects a series LLC's ability to create multiple protected series under one master filing, which helps real estate investors manage several properties without forming separate entities for each.
Filing Method and Processing Speed
Standard processing takes 10 business days. Need it faster? Expedited service brings that down to roughly 24 hours for an additional $100, bringing a standard LLC filing to $250 total or a series LLC to $500 total.
Registered Agent Selection
You can appoint yourself as registered agent at no added state cost. Or you can hire a professional service, which typically runs $100 to $300 per year depending on the provider. This cost comes from the provider, not the state, so pricing varies by company.
Business Name Requirements
Reserving a business name costs $25 and holds it for 90 days. Adopting a DBA or assumed name follows a fixed 5-year renewal cycle, with fees ranging from $30 to $150 depending on where you fall in that cycle.
Licenses, Permits, and Location
Local licensing costs vary sharply by municipality. Chicago's fee updates, effective January 2026, set a Limited Business License at $500 for two years and a Regulated Business License at $1,000 for two years, per the City of Chicago's business fee schedule.
Compare that to smaller municipalities like Normal, which charges no fee for its general business license, or Peoria, which doesn't require a standard license at all outside specific regulated activities.
Ongoing Compliance Obligations
Every Illinois LLC owes a $75 annual report fee. LLCs taxed as partnerships also face Illinois's Personal Property Replacement Tax (PPRT) at 1.5% of net Illinois income — a recurring cost many first-time owners don't see coming.
Cost Breakdown of an Illinois LLC
The true cost of an Illinois LLC extends well past the initial $150 filing fee. Here's every line item you should plan for.
| Cost Item | Frequency | Details |
|---|---|---|
| Articles of Organization | One-time | $150 standard LLC, $400 series LLC |
| Registered agent service | Recurring (annual) | $100–$300/year if using a professional service |
| Annual report filing | Recurring (annual) | $75, due in your LLC's anniversary month; $100 late penalty |
| DBA/assumed name registration | Periodic (5-year cycle) | $30–$150 depending on filing year |
| Business licenses and permits | Varies | Industry- and municipality-dependent |
A few details worth flagging:
- Miss your annual report deadline, and Illinois tacks on a $100 penalty. That's a mistake that's entirely avoidable with a simple calendar reminder.
- Sales tax registration itself is free, but local permits for regulated industries (food service, liquor, contracting) can add hundreds of dollars depending on your city.
- The DBA fee follows Illinois's five-year cycle, not your filing date. Names registered in years ending in 4 or 9 cost $30; years ending in 0 or 5 cost $150.
Illinois LLC Costs vs. Other States
Entrepreneurs comparing Illinois to other states often look at the filing fee alone. That's a mistake: ongoing costs matter just as much.
Filing Fee Comparison
| State | Domestic LLC Filing Fee |
|---|---|
| Illinois | $150 |
| Indiana | $100 |
| Wisconsin | $130 online / $170 paper |
| Wyoming | $100 |
Illinois sits squarely in the middle of the pack on filing fees.
Annual Fee Comparison
Illinois charges $75 annually for its report. Nationally, LLC annual or biennial report fees typically fall in the $20–$100 range, though this varies widely since some states file biennially rather than yearly. Illinois lands comfortably within that band.
Why Cheaper States Aren't Always Better
Forming your LLC in a state like Wyoming while actually operating in Illinois usually triggers foreign qualification requirements. You'd file Form LLC-45.5 with Illinois, pay another $150 admission fee, and still need an Illinois registered agent. In practice, you end up paying fees in two states instead of one — often erasing whatever you saved by filing "cheap" elsewhere.
How to Budget for Your Illinois LLC (and Avoid Costly Mistakes)
The right budget depends on your business needs, not the lowest sticker price you can find. Here's where owners typically go wrong.
Common mistakes to avoid:
- Fixating on the $150 filing fee while forgetting the recurring annual report and DBA renewal costs
- Choosing the cheapest registered agent without checking their reliability for handling legal documents
- Skipping license and permit research, then facing fines or delays once you're already operating
Factors to weigh before you file:
- Whether expedited processing, a series LLC, or multiple licenses fit your industry and location
- Industry-specific permit or licensing fees that can add hundreds of dollars beyond the base filing cost
- Building in ongoing bookkeeping and tax compliance support so no annual filing deadline slips through
That last point matters more than most owners expect. Once your LLC is formed, the compliance clock never really stops: annual reports, PPRT filings, and federal and state tax deadlines all stack up.
Many small business owners partner with an outsourced accounting firm like VJM Global for ongoing bookkeeping and financial reporting. That support keeps formation paperwork from turning into a missed deadline six months later.
Conclusion
Illinois LLC costs range from a bare-minimum $150 filing fee to $500–$1,000+ once you factor in registered agent services, licensing, and ongoing compliance. Understanding the fee structure upfront, including the DBA cycle and the PPRT tax, prevents budget surprises down the road.
The right spend balances state compliance, day-to-day convenience, and long-term financial planning rather than chasing the lowest sticker price.
Frequently Asked Questions
What is the filing fee for an LLC in Illinois?
Standard LLCs pay a $150 one-time fee for Articles of Organization. Series LLCs pay $400. Both are one-time costs, not recurring charges.
How long does it take to get an LLC approved in Illinois?
Standard processing takes about 10 business days. Expedited 24-hour processing is available for an additional $100.
Is there an annual fee to maintain an Illinois LLC?
Yes, a $75 annual report is due each year in your LLC's anniversary month. Missing it triggers a $100 late penalty.
Do I need a registered agent for my Illinois LLC?
Illinois law requires every LLC to have a registered agent. You can self-appoint at no extra state cost, or hire a professional service for roughly $100–$300 per year.
How much does an Illinois DBA (assumed name) cost?
It's a tiered fee ranging from $30 to $150, depending on where your filing falls within Illinois's fixed five-year renewal cycle.
Are there hidden or additional fees when forming an Illinois LLC?
Several additional costs can apply, including local business licenses, industry-specific permits, expedite fees, and late penalties on top of the base filing fee.
