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Missouri Registered Agent: Requirements and How to Choose One

Last verified: November 4, 2026

If you are starting a business in Missouri as an LLC or corporation, you need a registered agent. This is not optional. Missouri law requires it, and the rule that trips people up is the address: it must be a real street address where someone can be served, and a mailbox store does not count. This guide covers who can serve, what it costs, and when to pay a professional. If you are still choosing an entity, start with the Missouri LLC guide.

What Is a Registered Agent?

A registered agent is a person or business authorized to accept legal documents on behalf of your company. When someone sues your business or serves it with a notice, the papers go to your registered agent first. Your agent then passes them to you.

The registered agent is different from your registered office, though the two are closely linked. The registered office is the physical street address where legal papers are delivered. The registered agent is who or what sits at that address to receive them.

Missouri Registered Agent Requirements

The Missouri Secretary of State general services page says an entity must maintain a registered agent with a Missouri address. There should be no gap in coverage.

Who Can Be a Registered Agent in Missouri

Missouri allows two types of registered agents:

  • An individual who is a Missouri resident and whose business office is identical to the registered office
  • A corporation authorized to transact business in Missouri

That second option includes professional registered agent companies, covered below. The Secretary of State FAQ also requires the new agent's written consent when you change agents (see Form RAC 1, Acceptance of Appointment and Consent to Serve as Registered Agent). If you are the one asked to become someone's agent, you sign that consent, so read what it commits you to first.

Address Requirements

The registered office must be a physical location in Missouri where the agent can be served. According to the Secretary of State FAQ, the address must be:

  • A physical street address, not a PO Box alone (a PO Box may be added only if a street address in the same city is also listed)
  • The same as the registered agent's business office
  • Not the address of a retail mailing store

If you use your home as the registered office and you are the registered agent, that works. If you use an office suite, the agent must actually be reachable there. A mailbox or mail forwarding store does not qualify, so do not buy a cheap mailbox plan and list it as your office.

Continuous Maintenance Requirement

You need an agent from the day you file your formation documents. The Secretary of State FAQ lists failure to maintain a registered agent as a ground for administrative dissolution of a corporation, and reinstatement requires an application, a tax clearance letter, and payment of fees and penalties. For LLCs and other non-corporate entities, the Secretary of State says the failure to maintain a registered agent can result in cancellation of the entity's registration (Missouri Secretary of State: other filings required of general business corporations, archived copy captured September 16, 2026).

Missouri Registered Agent Costs

Initial Filing

You name your registered agent in the formation document (Articles of Organization for an LLC, Articles of Incorporation for a corporation). The Secretary of State schedule of fees lists no separate fee for naming the agent, so the formation fee is the cost:

  • LLC formation: $50 online, $105 on paper
  • Corporation formation: $58 for authorized capital of $30,000 or less

If you use yourself as the registered agent and use your home address, the only cost is the formation filing fee.

Changing Your Registered Agent

To change your registered agent or registered office address after formation, file a Statement of Change of Registered Agent or Registered Office (Corp. 59) with the Secretary of State. The fee is $10 for everything except limited liability partnerships, per the schedule of fees.

You might change your agent if you move, hire a professional registered agent company, or switch to a different company.

Professional Registered Agent Services

Professional registered agent companies set their own annual prices, and Missouri does not regulate them. Compare the renewal price, not just the first-year offer. These services usually include:

  • Maintaining a physical Missouri address for receiving documents
  • Accepting legal papers on your behalf
  • Forwarding documents to you by mail or email
  • Some provide additional services like mail forwarding for general business correspondence

Professional services are useful if you do not have a Missouri office, do not want to use your home address, or simply want a third party handling legal documents. To compare providers, see Best LLC Services in Missouri.

How to Choose a Registered Agent

Option 1: Use Yourself

You can be your own registered agent if you meet the requirements. You need to:

  • Be a Missouri resident
  • Have a physical Missouri street address that is also your registered office
  • Be reachable at that address when someone serves papers

The advantage is cost: nothing extra beyond the formation filing fee. The disadvantage is that all legal papers go directly to you, and you are responsible for timely handling them. If you miss a deadline or lose a court notice, the consequences are yours to bear.

My recommendation: use yourself only if you work from a fixed Missouri address and are comfortable with that address being public. It does not work if you live outside Missouri, want your home address private, or are often away.

Option 2: Use a Professional Registered Agent Company

National registered agent companies can serve Missouri businesses. A qualifying company needs to be authorized to transact business in Missouri and have a Missouri office that matches the registered office.

Advantages of a professional agent:

  • You do not have to use your home address publicly
  • The agent ensures documents are received and forwarded promptly
  • You get consistent service even if you move or travel
  • The position is less likely to lapse because of a move or a departure

Disadvantages:

  • Annual or recurring cost
  • You depend on the company's professionalism and reliability to forward documents on time
  • If the company fails or goes out of business, you may need to switch agents

When choosing a professional agent, verify that they have a physical Missouri office, not a virtual mailbox, because a retail mailing store address is not allowed. Ask how quickly they forward papers and how they notify you.

Option 3: Use Another Individual or Business Entity

You can name another Missouri-resident individual, such as a business manager or officer, if their business office is the registered office and they consent in writing. The catch: if that person leaves, you must file a change, so most owners find a company agent less fragile.

Filing Your Registered Agent with Missouri

Initial Filing

When you file your LLC or corporation formation documents, you include the registered agent name and address on the Articles of Organization or Articles of Incorporation. You can file through the Missouri Secretary of State online business services or by mail. Online formation is the cheaper route ($50 for an LLC versus $105 on paper).

Changing Your Registered Agent

If you need to change your registered agent after formation, file the Corp. 59 statement of change with the new agent's written consent and pay the $10 fee.

Afterward, check the Secretary of State business entity search to confirm the new agent is on file.

Common Mistakes to Avoid

Using a PO Box Alone

A PO Box can be listed only if a physical street address in the same city is also listed. Retail mailing store addresses are not accepted.

Letting Your Agent Lapse

The most serious mistake is allowing your registered agent position to go unfilled. This can happen if you forget to renew a professional agent service, if an employee leaves without being replaced, or if you move and do not update your address. If it happens, file a Corp. 59 statement of change with a new agent's consent right away.

Using Your Home Address When You Want Privacy

If privacy is important to you, do not use your home address as the registered office. Use a professional registered agent company or a business address instead. The registered office address appears in the Secretary of State's business entity search.

Not Updating Changes

If you move, change jobs, or need to switch agents, file an updated form with the Secretary of State. Do not assume your old information remains accurate.

Registered Agent vs. Registered Office vs. Principal Place of Business

These terms are easy to confuse. Here is what each means:

  • Registered agent: the person or entity authorized to receive legal documents for your business
  • Registered office: the physical street address where your agent receives documents
  • Principal place of business: where you actually run your business day to day (can be different)

Many small businesses use the same address for all three. A sole proprietor working from home might have the home address as both the registered office and principal place of business, with the owner as the agent. A larger business might use a commercial office for the registered office, another location for day-to-day operations, and a different executive as the registered agent.

Missouri requires the registered agent's business office to be identical to the registered office. Your principal place of business can be elsewhere.

Sources

Disclaimer

This article provides informational guidance on Missouri registered agent requirements and is not legal or tax advice. Registered agent rules can change, and your specific situation may have nuances not covered here. Before finalizing your choice of registered agent or filing formation documents, consult with a Missouri business attorney or a certified public accountant. They can advise you based on your business structure, location, and long-term plans.

Keep exploring: related Missouri guides