Missouri Certificate of Authority / Do you need one?
When a company needs a Missouri certificate of authority
A company needs a Missouri certificate of authority once it transacts business in Missouri, and skipping it risks a fine of at least $1,000. The statutes never define the phrase. They list what is excluded and leave everything else to judgment,. The exclusions and the situations that come up most are below.
The rule in two parts
For corporations, section 351.572 forbids transacting business in Missouri without a certificate, and then names activities that do not count. For LLCs, section 347.163 does the same job for registration. Both lists are open ended, which means that an activity absent from them is neither forbidden nor safe. Whether an activity outside the lists counts depends on your facts.
What corporations may do without a certificate
The corporate list has eight entries. Defending, settling or bringing a legal proceeding does not count. Neither do meetings of the board or of shareholders, or other internal management. A bank account is allowed. So is keeping an office for transferring the corporation's own securities. Taking on debt and granting security interests is allowed, as is collecting debts and enforcing those interests. A stand-alone deal closed within 30 days is allowed, unless it is one of a run of like transactions. And interstate commerce does not count.
What LLCs may do without registering
The LLC list has seven entries and tracks the corporate one, minus the securities office. It covers lawsuits and disputes, internal affairs, bank accounts, borrowing and security interests, collecting debts, interstate commerce, and the one-off deal that closes inside 30 days. Being a member of an LLC that itself does business in Missouri does not by itself make a foreign corporation, partnership or LLC a Missouri business.
Registration and other laws are separate questions
Neither list settles whether a company is exposed to suit, tax or regulation in the state. A company can sit inside the exclusions for registration and still owe tax, and the reverse holds too. The LLC chapter adds a warning: an LLC that does business unregistered answers in Missouri courts, under the long-arm statutes, for claims that come out of that business. Tax questions are separate from this filing.
The thirty-day deal
The exception covers a single stand-alone deal finished within 30 days. Repeat work every month is a pattern, so the exception stops applying. A single deal that closes inside the window is excluded; a run of like transactions is not.
Scenario: an employee who works from home in Missouri
One person working from a Missouri home for most of the week is a regular, ongoing presence, and none of the excluded categories describes it.
Scenario: a warehouse, shop or office
Leasing space that you staff or stock is an unmistakable presence. A storage unit used only for occasional inventory is less clear, and it depends on how the company uses it.
Scenario: selling to Missouri customers online
A company that ships goods to Missouri customers from outside the state, with no staff, stock or office in Missouri, resembles interstate commerce, which is on both lists. Yet nothing in the statute promises that sales by themselves can never be enough, so a large Missouri customer base is a question the lists do not answer.
Scenario: a contract that needs people on site
A construction, installation or service job that puts workers on Missouri soil for months is not an isolated transaction in the sense of the statute, which covers only a single stand-alone deal done in 30 days. Register before the crew arrives. A job that ends within that window and never recurs is the textbook exception.
Scenario: owning rental property
Collecting rent on Missouri property is regular activity, and the registration question is easy to answer. A second rule applies to some property-owning LLCs: an affidavit to the city clerk in certain large home rule cities, naming the natural person who manages the property.
Scenario: a holding company
A holding company that touches Missouri only through an account at a bank, a loan, or an interest in an operating LLC falls on the excluded side, and the statute says membership alone is not transacting business. The picture changes when the holding company manages the property or employs the people. Recheck when its role changes.
Scenario: a lawsuit
Suing or defending in a Missouri court does not itself count as transacting business. The trap is the opposite one: a corporation already doing business without a certificate cannot start the suit, and the court may stay the case until it obtains one.
Quick answers
| Situation | Likely answer |
|---|---|
| One Missouri bank account | Excluded |
| Board meeting held in Missouri once a year | Excluded |
| One sale delivered and finished inside thirty days | Excluded |
| Employee working in Missouri every week | Register |
| Leased shop or warehouse | Register |
| Rental property that earns income | Register |
| Online sales with nothing physical in the state | Excluded as interstate commerce, unless sales alone are enough, which the statute does not settle |
| Member of an LLC that does business here | Excluded on that ground alone |
Trigger questions
Is there a day count?
The 30 days apply to one stand-alone deal.
Where do the exclusions come from?
Section 351.572 for corporations and section 347.163 for LLCs.
Is membership in an LLC enough?
No. Under the statute, membership alone is not transacting business.
What if I am not sure?
Your facts decide that, and a Missouri business lawyer can weigh them. With the answer in hand, we enter it and file.
What we charge and what Missouri charges
Start my Missouri filing
Missouri$199
+ the Missouri fee for your entity
- The Missouri form that matches your entity type, completed from your answers
- Your home-state certificate checked against Missouri's 60-day limit
- A Missouri registered agent and office from us, or the one you name
- The filed record returned to you
- Renewal: after the first year, the agent service renews at $149 a year
Missouri's amounts are $105 for an LLC, $155 for a corporation and $25 for a nonprofit, listed apart from ours. $199 plus the state fee, including your first year of registered agent service; after that the agent service renews at $149 a year.
Sources
- Missouri Secretary of State, schedule of fees and charges
- Missouri Form LLC 4, foreign LLC registration
- Missouri Form Corp 42, foreign corporation certificate of authority
- Missouri Form Corp 55A, foreign nonprofit certificate of authority
- Missouri Revised Statutes 347.153, registration of foreign LLCs
- Missouri Revised Statutes 347.163, failure to register
- RSMo 351.572, authority to transact business required (foreign corporation)
- RSMo 347.048, affidavit naming a property manager for certain LLCs
- RSMo 351.574, consequences of transacting business without authority
Need a Missouri certificate of authority?
Tell us the entity type and we line up the form, the certificate and the agent.