What It Actually Costs to Start a Business in St. Louis (Missouri vs. Illinois)
Revised July 27, 2026
What does it actually cost to start a business in the St. Louis metro?
Far less than most people expect on the Missouri side. A Missouri LLC is $50 online ($105 by mail) and then nothing again — no annual report, no annual fee (Missouri is one of only four states with none). An Illinois LLC is $150 plus $75 every year. Add a free federal EIN, a $7 fictitious-name filing if you use a trade name, and a $200 business license inside St. Louis city limits — roughly $250 total to exist legally. 💡 The cheap part is becoming legal. The expensive part is becoming findable.
Keep reading ↓What does it actually cost to start a business in the St. Louis metro?
Less than almost anyone expects on the Missouri side, and the gap between the two states is bigger than most people in this metro realize.
A Missouri LLC costs $50 to file online ($105 by mail), and then Missouri asks for nothing again — no annual report, no annual fee. Across the river, an Illinois LLC runs $150 to form and $75 every single year after that. Same metro, same drive to work, three times the setup cost and a recurring bill that never appears in Missouri.
Add a free federal EIN and, if you are inside St. Louis city limits, a $200 business license, and a genuinely lean Missouri startup can be legally standing for well under $300.
The state filing, side by side
| Cost | Missouri | Illinois |
|---|---|---|
| Form an LLC (online) | $50 | $150 |
| Form an LLC (paper) | $105 | $150 |
| Annual report | None required | $75 per year |
| Federal EIN | Free | Free |
Run that forward. Five years in, the Missouri LLC has paid $50 total. The Illinois LLC has paid $525. Neither number is large in the scheme of a business, but the structural difference is worth knowing before you assume the states are interchangeable — particularly if you are choosing where to register a business that could sit on either side.
To be clear about what that does not mean: you do not get to form in Missouri to dodge Illinois obligations for an Illinois business. Where you actually operate drives what you owe. But for a genuinely mobile or online business, it is a real consideration.
The thing Missouri quietly gets right
The no-annual-report rule deserves its own moment, because it removes an entire failure mode.
In most states, the way small LLCs die is not dramatic. The owner forgets an annual filing, the fee goes unpaid, late penalties stack, and the entity is administratively dissolved — often discovered months later when a bank or a client asks for proof of good standing. Missouri does not require LLCs to file an annual report, and does not impose a franchise tax on them, which puts it among only four states with no recurring annual LLC fee at all.
So the single most common paperwork trap in American small business simply does not apply to a Missouri LLC. That is worth more than the $50 saved.
Corporations and other structures have their own requirements, and this is one of the few places where twenty minutes with an accountant genuinely pays for itself. But for the ordinary one-or-two-person LLC, Missouri is about as low-maintenance as it gets.
What you do not have to pay for
A large share of what people spend forming a business is optional, and the upsells are aggressive because the margins are good.
You do not need a formation service. Filing directly with the Secretary of State is the same filing. Services are a convenience purchase, not a legal requirement, and the “$0 + state fees” offers typically recover their margin on the registered agent renewal.
You may not need a paid registered agent. You can generally serve as your own if you have a physical address in the state and are available during business hours. The real reasons to pay for one are privacy — your address becomes public record — or not having a reliable street address. Those are legitimate. “It is required” is not.
You do not need to buy a “business license package.” There is a whole industry selling Missouri business licenses. Missouri does not issue a general statewide business license, so what these products actually do is fill out local forms you could file yourself. Our guide to what licensing you actually need in St. Louis covers which office to go to and what each one charges.
You almost certainly do not need a trademark on day one. Worth doing eventually if the brand matters. Not a startup cost.
The local layer, which is where it gets uneven
The state fee is the predictable part. Local licensing is where two identical businesses pay different amounts for no reason other than geography.
Inside the City of St. Louis, a Graduated Business License runs $200 to start — or $100 if you begin between January 1 and May 31 — and renews from $200 a year for a business with up to two city employees, on a license year running June 1 to May 31.
In St. Louis County, there is no single county-wide equivalent. The county holds more than eighty separate municipalities, each with its own rules and its own fees. Two competitors five miles apart can face entirely different requirements.
Budget for this rather than being surprised by it, and find out which municipality actually governs your address before you assume. A “St. Louis, MO” mailing address very often is not in the City of St. Louis.
The $7 filing almost nobody mentions
If you plan to operate under any name that is not your own legal name or your LLC’s exact registered name, Missouri wants a fictitious name registration — what most people call a DBA, for “doing business as.” It is Form Corp-56 with the Secretary of State, and it costs $7.
Seven dollars. It is almost certainly the cheapest line item in your entire startup, and it is the one most commonly skipped — usually by sole proprietors who assume that because there was no formation filing, there is no filing at all.
Two situations catch people:
- Sole proprietors using a trade name. If you are Maria Alvarez and you answer the phone as “Alvarez Cleaning Co.,” that is a fictitious name.
- LLCs operating a second brand. If your LLC is registered as “Gateway Services LLC” but the truck and the website say “Gateway Gutter Pros,” the second name needs registering too.
The practical reason to bother, beyond compliance: banks generally want to see the DBA before they will open an account in the trade name or deposit checks made out to it. People discover this at the bank counter, which is a bad time to discover it. Missouri takes roughly five to ten business days to process one and offers no expedited option, so file it before you need it, not after.
The costs that actually surprise people
Formation is cheap. These are the ones that show up in month two:
Insurance. General liability is the real first bill for most service businesses, and if you have employees, workers’ compensation on top. Premiums vary enormously by trade — a bookkeeper and a roofer are not in the same universe — so get two or three actual quotes rather than trusting any number you read online, including a range in an article like this one.
A business bank account. Not legally mandatory for a sole proprietor, but the moment you have an LLC, mixing personal and business money is how people quietly undermine the liability protection they just paid for. Many local banks and credit unions offer free small business checking.
Accounting help. Cheaper than the first mistake. Especially around sales tax, which catches new retail and food businesses constantly.
Getting found. The one nobody puts in the startup budget. You can be fully licensed, insured and legally perfect and still have a silent phone, because none of that paperwork is visible to a customer searching for what you sell.
Do you even need an LLC?
Honest answer: not always, and the $50 is not the deciding factor.
A sole proprietorship is the default the moment you start doing business under your own legal name. There is generally no formation filing to make with the Secretary of State, and no fee. You will still handle local licensing and taxes, but the entity itself costs nothing.
What the LLC buys is separation — a legal line between business liabilities and personal assets. That matters more as you take on risk: going into people’s homes, handling their property, having employees, signing leases, carrying inventory. It matters less for a low-risk side business with no employees and no premises.
The mistake in both directions is common. People form an LLC for a hobby that will never generate a claim, and people skip one while doing work in strangers’ houses. If you are unsure which side you are on, that is a specific question worth asking an attorney or accountant once, rather than guessing permanently.
And before spending anything at all: it is usually worth confirming somebody wants to buy this. We wrote a guide on testing a business idea before you spend money for exactly that reason.
A realistic first-year floor
For a one-person Missouri service business, formed online, acting as its own registered agent, based in the City of St. Louis:
- LLC filing — $50
- EIN — $0
- Graduated Business License — $200 ($100 if you start after January 1)
- Missouri annual report — $0, because there isn’t one
That is roughly $250 to exist legally, before insurance and before anything that actually brings in customers. In St. Louis County the license line changes to whatever your municipality charges. In Illinois, swap the $50 for $150 and add $75 a year forever.
Which is genuinely good news, and also the part worth sitting with: the cheap part is becoming legal. The expensive part is becoming findable. Most businesses that fail quietly in this metro were perfectly registered the whole time.
Frequently asked questions
How much does an LLC cost in Missouri?
$50 to file articles of organization online with the Secretary of State, or $105 by mail. After that Missouri requires no annual report and imposes no franchise tax on LLCs, so the recurring state cost is $0 — one of only four states with no ongoing annual LLC fee. Local licensing and any professional licenses are separate.
Does Missouri require an annual report for an LLC?
No. Missouri LLCs have no annual report obligation to the Secretary of State and no annual fee. This removes the most common way small LLCs get administratively dissolved in other states — a missed yearly filing. Other entity types have their own requirements, so confirm what applies to your specific structure.
Is it cheaper to form an LLC in Missouri or Illinois?
Missouri, substantially. Formation is $50 online in Missouri versus $150 in Illinois, and Illinois charges a $75 annual report fee that Missouri does not have at all. Over five years that is $50 versus $525. But you cannot form in Missouri to escape Illinois obligations for a business actually operating in Illinois — where you do business governs what you owe.
Do I need a business license to start an LLC in Missouri?
They are separate things. Forming an LLC registers a legal entity with the state; a business license is local permission to operate. Missouri issues no general statewide business license, but your city may require one — the City of St. Louis does, at $200 to start. Forming the LLC does not license you anywhere.
Can I be my own registered agent in Missouri?
Generally yes, if you have a physical street address in the state and are available during normal business hours. A commercial registered agent is worth paying for when you want to keep your address off the public record or lack a reliable street address — but it is a convenience, not a legal necessity, despite how formation services present it.
What does it cost to start a business if I skip the LLC?
A sole proprietorship operating under your own legal name generally has no state formation filing and no fee, so the entity itself is free. You would still handle local licensing, taxes, and any professional licensing. What you give up is the liability separation an LLC provides, which matters more as you take on employees, premises, or work inside customers' homes.
Paid the $50 and the phone still isn’t ringing? That is the normal order of things. Registering a business makes it legal; nothing about that filing makes it visible to somebody searching for what you sell tonight. The gap between “legally exists” and “gets found” is where most new businesses quietly stall. Listing your business takes a few minutes.
Next steps: what licensing you actually need and testing the idea first. Or browse local pros on St Louis Near Me Directory.
Written by a dedicated team of St. Louis locals who live, work, and play right here in the St. Louis metro. Founder Lane Forman and team are committed to building the region’s most trusted directory by verifying listings and connecting local businesses with loyal customers across Missouri and Illinois.