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Biz Formation Academy

A plain textbook on LLC paperwork, one state per chapter.

Chapter 2 · Missouri

Missouri Registered Agent Chapter (2026): 6 Sections and the 3 Best Agents

For appointing a registered agent in Missouri in 2026, this chapter recommends Mainstay Filing ($149 a year), MO Registered Agent.org ($99 a year) and Missouri Registered Agent.co ($99 a year), ranked from first to last. 6 sections: the legal rule, eligibility, the address requirement and the filing that names the agent.
Written by the Biz Formation Academy editorial board

Essential facts

Must one be named? Yes revisor.mo.gov (edition of October 2026)
Cost of hiring an agent $99 to $149 a year As each company lists them
Number of sections 6 Each one explained

You will be able to explain

  • What Missouri requires of a registered agent
  • Eligibility and the address test
  • How to name or replace the agent
  • Who to consider as agent

The Missouri shortlist

Cost over three years comes first, then paperwork completed, second-year price, Missouri fit and price clarity (grading page).

1. Mainstay Filing: best for a nationwide agent at one price

Read this one first
First year: $149. Second year: $149

Mainstay Filing is ranked first in Missouri: $149 a year from one provider, for this state and any later one.

MO Registered Agent.org costs $150 less over three years; this service still ranks higher because it does more of the work.

Price covers

  • An office address inside the state
  • Any papers served on the company get scanned for you at no cost
  • Three government mailings a year are scanned at no cost to you
  • Also serves nonprofits, corporations, LPs and LLPs

Advantages

  • $149 per year
  • Valid in every state

Limitations

  • $50 a year above MO Registered Agent.org
  • This plan does not file reports
Visit Mainstay Filing Partner link. We may earn money if you buy.

2. MO Registered Agent.org: best for owners located in the state

Local option
First year: $99. Second year: $99

MO Registered Agent.org takes second position; an office address inside the state at $99 per year.

Price covers

  • A registered office address
  • Online copies of legal papers

Advantages

  • Priced below Mainstay Filing
  • $99 per year

Limitations

  • A single-state service
Visit MO Registered Agent.org Partner link. We may earn money if you buy.

3. Missouri Registered Agent.co: best for a local alternative

Local option
First year: $99. Second year: $99

Missouri Registered Agent.co takes third position; an office address inside the state at $99 per year.

On price, it matches MO Registered Agent.org.

Price covers

  • A registered office address
  • Online copies of legal papers

Advantages

  • Priced below Mainstay Filing
  • $99 per year

Limitations

  • A single-state service
Visit Missouri Registered Agent.co Partner link. We may earn money if you buy.

The Missouri rankings compared

#ServiceAnnual priceRenewal priceThree-year total
1 Mainstay Filing $149$149/yr$447 Visit Mainstay Filing Partner link. We may earn money if you buy.
2 MO Registered Agent.org $99$99/yr$297 Visit MO Registered Agent.org Partner link. We may earn money if you buy.
3 Missouri Registered Agent.co $99$99/yr$297 Visit Missouri Registered Agent.co Partner link. We may earn money if you buy.

Prices come from each company's own site, consulted November 13, 2026. Missouri charges the same either way.

The sections

  1. Section 1

    The Missouri rule stated

    Every LLC must name a registered agent with an in-state street address.

    Reference: revisor.mo.gov (edition of October 2026)

  2. Section 2

    Eligibility to serve

    A Missouri resident, or a corporation authorized in Missouri, whose business office is the registered office. (RSMo 347.030)

  3. Section 3

    Choose a qualifying office address

    The address has to be a physical street address in Missouri. A P.O. box can be listed only together with a street address.

    Every recommended service supplies the in-state address.

  4. Section 4

    Select the person or company

    Professional agents among the recommended services charge $99 to $149 a year; serving personally is available to those who qualify.

  5. Section 5

    Report the agent's details

    The agent is named when the Articles of Organization (Form LLC-1) is filed, and a later change is a separate filing with the Missouri Secretary of State.

    Reference: sos.mo.gov (edition of October 2026)

  6. Section 6

    Update the record when facts change

    No Missouri report is due, which leaves the registered agent appointment as the one thing to maintain.

What the agent costs in Missouri

Line itemPayeeCost
Agent service The service company$99 to $149 a year
Each later year The service company$99 to $149 a year

The three-year state row is computed as the filing fee, plus the report in each of years two and three, plus any yearly minimum tax. Service fees have their own rows.

How the Missouri recommendations were ranked

Chapters the price completes decided first place in Missouri. It is 30% of the ranking, and the rest comes from tuition over three years, second-year bill, fit for the state syllabus and clarity of the price list.

Serving all fifty states outweighed MO Registered Agent.org on the stated weights.

Missouri review questions

May a Missouri LLC operate without a registered agent?

Yes. Every LLC must name a registered agent with an in-state street address.

Can I be my own registered agent?

Possibly. Sections 2 and 3 show whether both rules are met.

Can I change my registered agent later?

Change it whenever needed through the Missouri Secretary of State, as section 5 describes.

What does a registered agent cost in Missouri?

Budget $99 to $149 annually for an agent from the list.

What does the LLC pay the state each year?

Missouri sets no report fee.

Which registered agent would you choose?

Mainstay Filing, because $149 yearly is the agent price in all fifty states. After it come MO Registered Agent.org and Missouri Registered Agent.co.

Related chapters

Bibliography and primary texts

  1. RSMo 347.037 rests on revisor.mo.gov, a text consulted August 2026.
  2. Missouri formation fee: Filing fee, official source rests on sos.mo.gov, a text consulted October 2026.
  3. Missouri registered agent statute rests on revisor.mo.gov, a text consulted October 2026.
  4. November 13, 2026: Mainstay Filing's Missouri service page was consulted for the price tables
  5. November 13, 2026: MO Registered Agent.org's pricing page was consulted for the price tables
  6. November 13, 2026: Missouri Registered Agent.co's pricing page was consulted for the price tables