Missouri LLCs have almost no ongoing state paperwork: no annual report and no LLC franchise tax. The one continuing duty is to keep a registered agent and registered office in Missouri. The agent must be a Missouri resident, or a corporation authorized in Missouri, whose business office is the same as the registered office. Changing agents costs $10 with the Statement of Change of Registered Agent and/or Registered Office (Corp 59), according to the Missouri Secretary of State as of October 2026.
Because nothing else prompts you to review your records each year, an outdated agent can go unnoticed in Missouri for a long time. Our recommendation for most owners is Mainstay Filing at $149 a year.
Updated October 2026.
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Best Registered Agents in Missouri (2026)
Here are our top picks for registered agent service in Missouri, ranked. Mainstay Filing comes first for its flat yearly price; the two Missouri registered agent services below it are options if you only need an agent.
| Rank | Provider | Best for | Price | What’s included |
|---|---|---|---|---|
| 1 | Mainstay Filing | Registered agent service with a flat renewal price | $149/year (renews at $149) | Registered agent service in all 50 states; switching from another agent included (state change fee at cost) |
| 2 | MO Registered Agent.org | Missouri registered agent service only | $99/year | $99 per year, flat; in-state street address for the registered office; legal documents served on the company are scanned and sent to the owner online |
| 3 | Missouri Registered Agent.co | Missouri registered agent service only | $99/year | in-state street address for the registered office; legal documents served on the company are scanned and sent to the owner online |
1. Mainstay Filing
Mainstay Filing is our top pick in Missouri. It costs $149/year (renews at $149) and covers registered agent service in all 50 states; switching from another agent included (state change fee at cost). The price stays the same every year, with no add-on menu.
2. MO Registered Agent.org
MO Registered Agent.org is a Missouri registered agent service at $99/year. It provides $99 per year, flat; in-state street address for the registered office; legal documents served on the company are scanned and sent to the owner online. It’s a fit if you only need a registered agent rather than full formation help.
3. Missouri Registered Agent.co
Missouri Registered Agent.co is a Missouri registered agent service at $99/year. It provides in-state street address for the registered office; legal documents served on the company are scanned and sent to the owner online. It’s a fit if you only need a registered agent rather than full formation help.
Missouri registered agent at a glance
| Topic | Missouri (October 2026) |
|---|---|
| Who can serve | A Missouri resident (18+), or a domestic or authorized foreign corporation |
| Office rule | Agent’s business office identical to the registered office; agent and address in Missouri |
| P.O. box | Only together with a physical street address |
| Can the company be its own agent? | No |
| Change of agent/office (Corp 59) | $10 (form) |
| Articles of Organization (LLC-1) | $50 online, $105 on paper |
| Annual report | None for LLCs |
| Filing office | Missouri Secretary of State, Corporations Division |
Why the registered agent matters so much in Missouri
A registered agent receives lawsuits, subpoenas and official notices for your LLC. In most states, an annual report reminds owners to check that information every year. Missouri LLCs file no annual or biennial report, so the agent and registered office on file can stay unchanged for years.
That is convenient until something changes. If your agent moves, retires or closes, papers served on your company may never reach you. Under the Missouri LLC Act, failing to maintain a registered agent and office is grounds for administrative dissolution, so this one obligation deserves attention. You can check what is on file in the Missouri business entity search.
Missouri registered agent requirements
RSMo 347.030 requires each LLC to have and continuously maintain in Missouri a registered office, which may be, but need not be, the same as its place of business, and a registered agent at that office. The agent must be either:
- An individual resident of Missouri whose business office is identical with the registered office; or
- A domestic corporation, or a foreign corporation authorized to do business in Missouri, whose business office is identical with the registered office.
The statute’s list names individuals and corporations, so an LLC is not expressly authorized to act as another company’s agent. Individual agents should be at least 18.
Address rules from the Secretary of State’s form
The Corp 59 instructions add practical rules: the agent and address must be in Missouri, a P.O. box may be used only in conjunction with a physical street address, and the business may not act as its own agent.
How much does it cost to change a registered agent in Missouri?
The Missouri Secretary of State charges $10 to file Corp 59, the Statement of Change of Registered Agent and/or Registered Office, for a corporation or an LLC. The form can change the agent’s name, the agent’s address, or both. Missouri’s fee schedule lists current charges for all business filings.
| Missouri filing | Fee |
|---|---|
| Statement of Change of Registered Agent and/or Registered Office (Corp 59) | $10 |
| Articles of Organization (LLC-1), online | $50 |
| Articles of Organization (LLC-1), paper | $105 |
| Annual report | Not required for LLCs |
Electronic payments can carry a small third-party convenience fee.
How to change your Missouri registered agent
- Choose a qualifying agent: a Missouri resident, or a corporation authorized in Missouri, with its business office at the registered office.
- Look up your charter number in the business entity search.
- Complete Corp 59, entering the new agent’s name and the registered office’s physical Missouri street address. A P.O. box can be added only alongside the street address.
- Sign as an authorized person.
- Submit with the $10 fee to the Corporations Division in Jefferson City, or file through the Secretary of State’s online business services.
- Confirm the change in the business search and notify your previous agent.
If you hire a commercial agent, it will usually prepare Corp 59 for you.
Being your own registered agent in Missouri
A Missouri resident can serve as their LLC’s registered agent; the LLC itself cannot. With no annual report to prompt a review, think about how stable your address and schedule are.
| Consideration | Yourself | Commercial agent |
|---|---|---|
| Annual cost | $0 | Annual fee |
| Address on public record | Yours | The agent’s |
| Availability during business hours | Required | Handled by staff |
| Owners living in Kansas, Illinois or elsewhere | Not eligible | Eligible |
| After a move | $10 Corp 59 filing, easy to forget | No change needed |
Kansas City and St. Louis owners who live across the state line are a common case. They can run a Missouri LLC, but they cannot serve as its agent.
Keeping your Missouri agent current without an annual report
With no yearly filing to prompt a review, it helps to build your own check-in. A simple routine:
- Once a year, look up your LLC in the business entity search and confirm the agent’s name and street address.
- File Corp 59 right away whenever the agent moves, retires or stops serving, rather than waiting.
- Keep the agent’s contact details with your operating agreement and company records.
- If you hire a commercial agent, keep its billing details current so the service does not lapse.
Next steps for Missouri businesses
Forming a new LLC under RSMo 347.037 costs $50 online or $105 on paper, and the Missouri LLC Act, RSMo chapter 347, has no annual report requirement. That makes Missouri one of the cheapest states to maintain an LLC, as long as the registered agent stays current.
See our guides to starting an LLC in Missouri and starting a business in Missouri, and check name availability with the Missouri business name search guide.
FAQs
How much does it cost to change a registered agent in Missouri?
The Missouri Secretary of State charges $10 to file Corp 59, the Statement of Change of Registered Agent and/or Registered Office, for a corporation or LLC, as of October 2026. The same form can change the agent’s name, the registered office address, or both.
Who can be a registered agent in Missouri?
Under RSMo 347.030, a Missouri LLC’s agent must be an individual Missouri resident whose business office is the registered office, or a domestic or authorized foreign corporation whose business office is the registered office. The agent and address must be in Missouri.
Can my Missouri LLC be its own registered agent?
No. The Secretary of State’s Corp 59 instructions state that the business may not act as its own agent. An owner who lives in Missouri can serve personally, or the LLC can appoint another resident individual or a qualifying corporation such as a commercial agent.
Can I use a P.O. box for a Missouri registered agent?
Only together with a physical street address. The Corp 59 instructions say a P.O. box may be used only in conjunction with a physical street address, and both the agent and the address must be in Missouri, so documents can be delivered in person.
Do Missouri LLCs file an annual report?
No. Missouri LLCs are not required to file an annual or biennial report, and there is no LLC franchise tax. The main ongoing obligation is maintaining a registered agent and registered office in Missouri; failing to do so is grounds for administrative dissolution.
How much does it cost to form an LLC in Missouri?
Articles of Organization (LLC-1) cost $50 when filed online or $105 on paper with the Missouri Secretary of State, as of October 2026. Electronic payments can add a small third-party convenience fee. The articles must name a registered agent and registered office.
What is the best registered agent in Missouri?
Our recommendation is Mainstay Filing at $149 per year, renewing at the same price, with the agent change handled for you. MO Registered Agent.org is an alternative at a flat $99 per year with an in-state street address and online access to scanned documents.
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