To get an LLC in Missouri, you file Articles of Organization with the Secretary of State — $50 online or $105 by mail — and then work through a short list of follow-ups: name check, registered agent, operating agreement, federal EIN, tax classification, and any state or local tax registrations that apply to your business. Online filings clear in a few business days under normal conditions. Missouri does not require LLCs to file an annual report, so ongoing paperwork is lighter than in many states.
Pick a Name That Meets Missouri’s Rules
Your LLC name has to include one of the required designators: “Limited Liability Company,” “Limited Company,” “LLC,” “L.L.C.,” “LC,” or “L.C.”1Missouri Revisor of Statutes. Missouri Code 347.020 – Name of Company Regulated It also has to be distinguishable on the Secretary of State’s records from every other registered entity in Missouri. If it’s too close to something already on file, the Secretary of State will reject it.
Run a search on the Secretary of State’s business entity database before filing. If you want to lock in a name before you’re ready to file, Missouri lets you reserve one for $25. The reservation lasts 60 days and can be renewed twice for a maximum of 180 days.2Missouri Secretary of State. Starting a Business
Line Up a Registered Agent
Every Missouri LLC needs a registered agent to accept lawsuits, government notices, and official correspondence on the company’s behalf.3Missouri Revisor of Statutes. Missouri Code 347.030 – Maintenance of Office and Agent for Service of Process The agent can be an individual who lives in Missouri or a business entity authorized to operate here. Either way, the agent must keep a physical Missouri office (no P.O. boxes) staffed during business hours.
You can serve as your own agent if you have a qualifying Missouri address. Commercial registered agent services typically run $89 to $149 per year and are worth considering if you work from home and don’t want your address on public filings, or if you can’t reliably be at one place during business hours.
Prepare the Articles of Organization
The Articles of Organization are the document that creates the LLC. Missouri law requires six items:4Missouri Revisor of Statutes. Missouri Revised Statutes 347.039 – Articles, Contents
- The full LLC name with a required designator.
- The business purpose. Most filers use a general-purpose statement covering any lawful activity, which avoids amending the articles later if the direction of the business changes.
- The registered agent’s name and the street address of the registered office in Missouri.
- Management structure: member-managed (all owners run the business) or manager-managed (designated managers do). This decides who has authority to sign contracts and bind the company.
- Duration. Most filers choose perpetual, meaning the company continues until the members dissolve it.
- Each organizer’s name and physical address. An organizer doesn’t have to be a member; it can be an attorney or a formation service.
You can add optional provisions from your operating agreement, so long as they don’t conflict with the LLC statute.4Missouri Revisor of Statutes. Missouri Revised Statutes 347.039 – Articles, Contents Most people keep the articles minimal and put the detailed governance rules in a separate operating agreement.
File With the Secretary of State
Missouri’s Corporations Division accepts LLC filings online and by mail.5Missouri Secretary of State. Corporations Online is faster and cheaper: $50, usually processed within a few business days, though the Secretary of State’s office notes that timing can stretch during system upgrades or heavy volume.6Missouri Secretary of State. Frequently Asked Questions for the Online Filing System Paper filings cost $105 and go to the Secretary of State at 600 West Main Street, Jefferson City, MO 65101. Paper can take several weeks.
The LLC officially exists once the Secretary of State accepts the articles, or on a later effective date you name in the document, up to 90 days out.7Missouri Revisor of Statutes. Missouri Code 347.037 – Formation, Articles of Organization One timing point matters here: the LLC cannot take on debt or conduct business beyond what’s needed for its own formation until the articles are filed.
Write an Operating Agreement
Missouri law directs LLC members to adopt an operating agreement.8Missouri Revisor of Statutes. Missouri Code 347.081 – Operating Agreement, Contents, Policy Statement, Enforceability, Remedies The document is internal — it isn’t filed with the state — and the statute gives you broad freedom on what to include. Skipping it is a mistake even for a solo owner, because the operating agreement is what replaces the default statutory rules with terms you actually chose.
A workable operating agreement usually covers:
- Each member’s ownership percentage and what they contributed (cash, property, or services).
- How profits and losses are allocated, which doesn’t have to track ownership percentages.
- Voting and decision-making: which decisions need unanimous consent versus a simple majority.
- Transfer restrictions if a member wants to sell or leave.
- Dissolution procedures for winding the LLC down.
For a single-member LLC, the operating agreement does something different but just as important. It documents that you treat the LLC as separate from yourself, which matters if your liability protection is ever challenged.
Get an EIN From the IRS
An Employer Identification Number is a nine-digit federal tax ID that works like a Social Security number for your business. You need one to open a business bank account, file the LLC’s tax returns, and hire employees.9Internal Revenue Service. Get an Employer Identification Number The IRS recommends forming the LLC with the state first; applying before you have a state-formed entity can delay things.
The application is free. The online version at irs.gov uses Form SS-4 and issues an EIN immediately.10Internal Revenue Service. About Form SS-4, Application for Employer Identification Number (EIN) Fax and mail work too, but they take days to weeks.
Choose How the IRS Will Tax You
By default, a single-member LLC is a “disregarded entity” for federal tax purposes: the IRS ignores the LLC and income flows to your personal return like a sole proprietorship. A multi-member LLC defaults to partnership taxation, filing Form 1065 and issuing each member a Schedule K-1.11Internal Revenue Service. Limited Liability Company – Possible Repercussions
You can elect out of the default. Filing Form 8832 elects C-corporation treatment.12Internal Revenue Service. About Form 8832, Entity Classification Election Filing Form 2553 elects S-corporation treatment, and it has to be filed no later than two months and 15 days after the beginning of the tax year the election takes effect.13Internal Revenue Service. Instructions for Form 2553 For a new LLC, that deadline runs from the earliest date the company had owners, held assets, or started doing business. S-corp treatment can reduce self-employment tax for owners who take a reasonable salary, but the math only pays off above a certain income. Talk to an accountant before electing.
Once you change classifications, you generally can’t switch again for 60 months.11Internal Revenue Service. Limited Liability Company – Possible Repercussions
Register for Missouri Taxes and Local Licenses
Forming the LLC with the Secretary of State does not register you with Missouri’s tax authorities. If you’ll collect sales tax, withhold from paychecks, or owe corporate income tax, register separately with the Missouri Department of Revenue. The Department has online registration for sales tax, vendor’s use tax, consumer’s use tax, withholding tax, and other categories.14Missouri Department of Revenue. Online New Business Registration
Many Missouri cities and counties also require their own licenses or permits, and the Secretary of State’s office flags this as a distinct step.15Missouri Secretary of State. Steps for Starting a Business Requirements vary by location and industry. Check with your city or county clerk’s office.
Open a Business Bank Account
You aren’t legally required to open a business account, but it’s one of the most important things you do after formation. Keeping business funds separate from personal money is a key factor in maintaining limited liability protection.16FDIC. Why Should I Keep My Business Account and My Personal Account Separate? It also cleans up your tax records.
To open the account you’ll typically need your Articles of Organization, your EIN, and your operating agreement. Some banks also ask for a copy of any business licenses. Bring all four and you’ll avoid a return trip.
Keep Your Liability Shield Intact
The point of forming an LLC is a legal wall between your personal assets and business debts. Courts can disregard that wall (often called “piercing the veil”) if you treat the LLC like an extension of your personal finances rather than a separate entity. The behaviors that put the shield at risk are predictable:
- Mixing personal and business money by paying personal bills from the business account or vice versa.
- Undercapitalizing the LLC so heavily that a court concludes it was never really separate.
- Ignoring recordkeeping. LLCs have lighter formalities than corporations, but you still need to document major decisions, keep records of member votes, and maintain your operating agreement.
- Letting your registered agent lapse, which leaves the LLC without a point of contact for legal notices.
One point often gets confused: Missouri does not require LLCs to file annual registration reports. That obligation applies to corporations. You still have to keep your registered agent and registered office information current, though, so file an update promptly if either changes.3Missouri Revisor of Statutes. Missouri Code 347.030 – Maintenance of Office and Agent for Service of Process