How to Start an LLC in Missouri: A Step-by-Step Guide (2027)

How to Start an LLC in Missouri (Quick Answer)

To start an LLC in Missouri, file the Articles of Organization (Form LLC-1) with the Missouri Secretary of State's Corporations Division and pay the filing fee, $50 online or $105 by mail. Once the state approves it, your LLC legally exists, and Missouri then requires no annual report ever, though owners still owe state income tax on pass-through profits.

First-year cost: $50 if you file the Articles of Organization yourself, or $105 by mail. If you are not based in Missouri, add a registered-agent service, commonly $35 to $300 a year, plus an optional $25 name reservation.

Missouri is the only state in this series where a limited liability company never has to file an annual report, not this year, not ever. That's not an inference from a related statute. It's stated directly on the Missouri Secretary of State's own Corporations FAQ.

Combined with a low filing fee and a state income tax rate that's falling, not rising, it gives Missouri the lowest ongoing compliance burden of any state we've covered so far.

Forming the LLC itself still follows a short, standard process. Here's exactly what that looks like in Missouri, plus what "no annual report" really means once your LLC exists.

TL;DR

• Why Missouri: a $50 online filing fee, no annual report ever, and a state income tax rate trending toward a flat 4.7% make it one of the lower-friction states to form and maintain an LLC in.
• Step 1, name: confirm your LLC name is available with the Secretary of State and reserve it with Form BE-1 if you're not ready to file yet.
• Step 2, registered agent: Missouri requires a physical in-state street address; a PO box alone doesn't satisfy the requirement.
• Step 3, Articles of Organization: file Form LLC-1 with the Secretary of State's Corporations Division; online filing is both cheaper and faster than mail.
• Step 4, EIN without an SSN: founders without an SSN or ITIN apply by phone, fax, or mail using Form SS-4 instead of the online tool.
• Step 5, Form 5472: a 25%+ foreign-owned single-member LLC must file this every year, even at zero revenue, or risk a $25,000 minimum penalty.
• Step 6, ongoing compliance: Missouri LLCs file no annual report, ever, but owners still owe state income tax on pass-through profits at a top rate of 4.7% for 2026.
• Common mistakes: treating the EIN as the finish line and skipping Form 5472 are the two that cost founders the most, in Missouri or anywhere else.

Why Form Your LLC in Missouri?

Missouri's appeal isn't a single standout feature. It's that formation is cheap, the paperwork after formation is lighter than almost anywhere else, and the tax trend is heading in the founder's favor.

• Low formation cost: filing typically runs $50 online, $105 by mail, well under what many states charge.
• No annual report, ever: Missouri's Secretary of State confirms LLCs don't file one, unlike the recurring report-and-fee cycle most states require.
• A falling state income tax rate: the top individual rate sits at 4.7% for 2026 and is set to formalize as a flat 4.7% starting January 1, 2027, with a mechanism for further step-downs tied to revenue growth.

None of that replaces legal or tax advice for your specific situation. It just means the baseline compliance workload in Missouri is genuinely lighter than in most of the states in this series.

Step 1: Choose and Reserve Your LLC Name

Your LLC's name has to be distinguishable from existing businesses registered in Missouri, and it needs to include a designator like "LLC" or "Limited Liability Company."

• Search first. The Missouri Secretary of State's business name database lets you check availability before you file anything.
• Not ready to file yet? Lock the name down. Form BE-1 puts a $25 hold on the name for 60 days while you handle the rest.
• Renew twice if needed. A reservation can be renewed twice, for a maximum total hold of 180 days.
• No publication requirement. Missouri doesn't require you to publish a notice of formation in a newspaper, a step some states still impose.

Step 2: Appoint a Registered Agent

Every Missouri LLC needs a registered agent: a person or company with a physical street address in Missouri, available during business hours to accept legal documents and state notices on the LLC's behalf.

• A PO box alone doesn't qualify. The state's own filing form specifies that a PO box may not be used unless a street address is also provided.
• You can serve as your own agent if you have a Missouri street address and can be reliably present during business hours.
• Founders without a Missouri address typically use a commercial registered agent service instead.

Skipping a real agent for a friend's address or an unstaffed mailbox can put the LLC out of good standing with the state.

Step 3: File Your Articles of Organization

Form LLC-1, the Articles of Organization, is the filing that legally creates your LLC. You file it with the Missouri Secretary of State's Corporations Division.

• Filing fee: typically $50 online, or $105 if you file by mail. The paper fee is confirmed directly on the state's own form; the online figure is corroborated by secondary sources.
• Processing time: online filings are generally approved within about 24 hours, while mailed filings can take roughly 3 to 4 weeks.
• No confirmed expedited tier. Missouri doesn't publish a separate rush-processing fee. Filing online is already the fast path, so there's no premium option to weigh against it.
• What it lists: the LLC's name, registered agent, and organizer information.

Once this is approved, your LLC legally exists. That's also when the tax obligations covered in the next two steps start applying.

Step 4: Get an EIN, Even Without an SSN

An Employer Identification Number (EIN) is what the IRS uses to identify your LLC for tax purposes, and you'll need one to open a US bank account or file taxes. It's free directly from the IRS.

Founders with a Social Security Number or ITIN can apply online and get an EIN in minutes. Founders without either use Form SS-4 by phone, fax, or mail instead.

The manual route's wait mostly depends on volume and whether the form was filled out completely the first time. A rejected submission means starting the wait over, so getting the responsible-party details right matters more here than in the online flow.

Draft an Operating Agreement

Nothing you file in Missouri records who owns the LLC or how it gets run, which is why the operating agreement matters even though the state never asks to see it. Write it while the members still agree on everything, not after the first disagreement.

• Put ownership and money in writing. Record each member's ownership percentage, how profits and losses are split, and when distributions get made, so those terms are settled before there is anything to argue over.
• Name who can act for the LLC. State whether the members run it themselves or appoint a manager, which decisions need a vote, and what counts as approval.
• Cover the exits early. Spell out what happens when a member leaves, sells a stake, dies, or the LLC winds down, because those are the hardest situations to sort out after the fact.

The agreement lives with your internal records instead of going to the Secretary of State, so nothing external prompts you to revisit it. Update it yourself whenever members, ownership percentages, or management responsibilities change.

Open a US Business Bank Account

Once the EIN comes through, opening a dedicated business bank account is the next practical step, and most banks won't let you skip it.

• Bring the essentials. Banks typically ask for your EIN confirmation letter, approved Articles of Organization, and a copy of your operating agreement before they'll open a business account.
• Keep finances separate. Running LLC income and expenses through a personal account blurs the line between you and the business, which can undermine the liability protection an LLC is supposed to provide.
• Some banks accommodate remote founders. If you're not physically in Missouri, a growing number of banks and fintech providers support account opening without an in-person visit, though requirements vary by institution.

Step 5: File Form 5472 if the LLC Is Foreign-Owned

Own 25% or more of a single-member LLC as a foreign person, and the IRS puts you on the hook for Form 5472 every single year, whether the entity brought in a dollar or sat completely idle. Nothing about this comes from Missouri law. It's a federal obligation, and it's the one that quietly wrecks founders across every state in this series who assume an inactive LLC has nothing worth reporting.

• It doesn't travel alone. You attach a pro forma Form 1120 to it, a placeholder corporate return the IRS wants alongside the 5472 even though the LLC owes no corporate tax of its own.
• It's a record of money moving between you and the LLC, capital you put in, payments made for services, that kind of transaction.
• The clock matches your income tax return, and if you need more time, the same extension process generally covers it.

Note: miss it, or skip it entirely, and the IRS's floor for the penalty is $25,000, charged per form, per year, with your revenue number being completely irrelevant to that math.

Step 6: Handle Missouri's Ongoing Compliance

This is where Missouri actually separates itself from most of the states in this series. Once your LLC is formed, the state gives it almost nothing recurring to file.

• No annual report, ever. The Missouri Secretary of State's own Corporations FAQ asks directly, "Do limited liability companies have to file an annual report?" and answers "No." Missouri's LLC Act, Chapter 347 RSMo, contains no annual-report provision for LLCs; that recurring obligation applies to corporations under a separate statute, not to LLCs.
• State income tax still applies. Missouri taxes pass-through LLC income at the individual level through its graduated personal income tax, with no separate entity-level LLC tax. The top rate for 2026 is 4.7%, graduated from 2.0%.
• The rate is set to simplify further. Starting January 1, 2027, Missouri's top rate is scheduled to formalize as a flat 4.7%, with a trigger mechanism that could allow further 0.1-point annual cuts tied to state revenue growth.
• A ballot measure is pending, not settled. A proposal to potentially replace Missouri's income tax with an expanded sales tax passed the legislature in April 2026 and heads to voters in November 2026. It's a developing story, not a change you should plan around yet.

Missouri LLC Costs Breakdown

Missouri's cost stack is unusually short. There's the formation filing, an optional name hold, and after that the state asks for nothing recurring at all.

How Long Does It Take to Form an LLC in Missouri?

In Missouri the filing method decides almost everything. Online filings are generally approved within about 24 hours, while mailed filings can take roughly 3 to 4 weeks. Missouri doesn't publish a separate rush-processing fee, so there's no expedited tier to weigh against simply filing online.

The EIN is the next gate. Founders with an SSN or ITIN apply online and have the number in minutes. Founders without either file Form SS-4 by phone, fax, or mail, which runs anywhere from same-day to several weeks, and a rejected submission means starting that wait over.

The bank account can't be opened until the EIN confirmation letter exists, so it sits at the end of the chain.

File online with an SSN or ITIN in hand and the whole sequence closes fast. File by mail and apply for the EIN on paper, and the 3 to 4 week filing window is only the first stretch of the wait.

Common Mistakes to Avoid

Missouri's light compliance load means there simply aren't many state-specific traps here. That's the point. The mistakes that still show up are the same ones that trip up founders everywhere.

• Treating the EIN as the finish line: for a foreign-owned LLC, it's closer to the starting gun on an annual Form 5472 filing obligation than the end of the process.
• Assuming zero revenue means zero filing obligation: Form 5472 comes due on the calendar, not on your bank balance.
• Using a shortcut for the registered agent: a friend's address or an unstaffed mailbox can put the LLC out of good standing, and Missouri's form explicitly rejects a PO box used alone.

How FinStackk Helps

FinStackk is an accounting and tax compliance platform for U.S. businesses, helping you go from incorporation to ongoing accounting, tax, and compliance, all in one place.

Filing Form LLC-1 with Missouri's Secretary of State, lining up a compliant registered agent, and getting the EIN sorted: Fin-Start takes care of all of it for you.

Because Missouri still requires state income tax filing even without an annual report, Fin-Tax keeps that deadline, along with Form 5472 if it applies to you, on a proactive calendar instead of leaving you to track it yourself. Book a free demo to see both in action.

FAQ

Does Missouri require LLCs to file an annual report?

No. The Missouri Secretary of State's own Corporations FAQ states plainly that LLCs don't file an annual report. Missouri's LLC statute, Chapter 347 RSMo, has no annual-report provision for LLCs; that requirement applies only to corporations under a separate law.

This makes Missouri's ongoing compliance load lighter than most states, though you still owe state income tax on the LLC's pass-through profits.

What is Missouri's state income tax rate for LLC owners in 2026?

Missouri taxes LLC income at the individual level through its graduated personal income tax, since the state has no separate entity-level LLC tax. The top rate for 2026 is 4.7%.

It's scheduled to become a flat 4.7% starting January 1, 2027, with a possible mechanism for further small cuts tied to revenue growth. A separate ballot measure that could eventually replace the income tax with an expanded sales tax is pending a November 2026 vote and isn't enacted yet.

How much does it cost to form an LLC in Missouri?

Filing the Articles of Organization (Form LLC-1) typically costs $50 online or $105 by mail, and a name reservation, if you want one, costs $25 through Form BE-1.

Add a registered agent service if you don't have a Missouri street address to use yourself. Missouri doesn't impose a publication requirement, which keeps formation costs lower than in some states.

Does Missouri require an operating agreement for an LLC?

No. Missouri doesn't require you to file an operating agreement with the state, and Form LLC-1 covers only the LLC's name, registered agent, and organizer information. None of that says who owns what.

Skipping one is still a mistake. The operating agreement is the internal document that spells out ownership and decision-making, and it's part of what supports the LLC's liability protection if that protection is ever tested.

Banks also routinely ask to see a copy when you open a business account, so most founders end up writing one anyway. Even a single-member LLC benefits from having it in writing.

Can a non-US resident start an LLC in Missouri?

Yes. Nothing requires you to live in Missouri, or in the US, to form the LLC. You'll still need a registered agent with a physical Missouri street address, since a PO box alone doesn't qualify, which usually means a paid service if you're not in the state. Because you won't have an SSN, you apply for your EIN on Form SS-4 by phone, fax, or mail instead of the online tool. If your LLC is single-member and 25% or more foreign-owned, you also file Form 5472 with the IRS every year, even at zero revenue, or risk a $25,000 minimum penalty.

What are the annual filing requirements for a single-member LLC in Missouri?

Missouri LLCs, including single-member ones, file no annual report, ever. The Missouri Secretary of State's own Corporations FAQ states plainly that LLCs don't file one, and Chapter 347 RSMo contains no annual-report provision for LLCs. You still owe state income tax on the LLC's pass-through profits, so the light state filing load isn't the same as no obligations. A single-member LLC that is 25% or more foreign-owned also has a federal obligation: Form 5472, filed yearly with the IRS.

Does a Missouri LLC pay income tax?

Yes, at the member level. Missouri taxes LLC income through its graduated personal income tax, since there's no separate entity-level LLC tax, with pass-through profits reported on the owner's personal return. The top rate for 2026 is 4.7%, graduated from 2.0%, and it's scheduled to formalize as a flat 4.7% starting January 1, 2027. A separate ballot measure that could eventually replace the income tax with an expanded sales tax is pending a November 2026 vote and isn't enacted yet.