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LLC 101 Guide

Course unit 3 · Missouri

Foreign LLC Registration in Missouri (2026): 5 Tasks and the 3 Best Services

Our 2026 Missouri picks for registering an out-of-state LLC, strongest to weakest, are MO Registered Agent.org ($199), Missouri Registered Agent.co ($199) and Mainstay Filing ($199). 5 tasks cover the filing, the $105 fee and what you owe afterward.

Prepared by the LLC 101 Guide instructors

The quick version

Fee at the state office
$105
Look it up at sos.mo.gov; our reading dates from October 2026
Certificate you must attach
60 days
How old it may be at filing
Report fee
None
Does not apply
Three years of state fees
$105
Service fees not included
Tasks
5
Each one explained

By the end you will know

  • When an LLC from elsewhere must register in Missouri
  • The form and the fee
  • Staying in good standing
  • How the picks stack up

If you want someone else to file

Five published criteria decide the order; read them on how we grade.

Top of the class

1. MO Registered Agent.org: best for a budget registration

Top of the class$199 plus the state fee, then $99 a year

In Missouri, MO Registered Agent.org leads the class: $199 above the state fee, first agent year covered, then $99 a year.

Mainstay Filing costs more over three years, so this service takes first.

What the price covers

  • The filing is done for you
  • One year of agent service is part of the price

What works

  • $199 plus the state fee
  • $99 a year for the agent after that
  • A year of agent service is included

What to weigh

  • The home state needs a different agent
Visit MO Registered Agent.orgPartner link. We may earn money if you buy.

Top of the class

2. Missouri Registered Agent.co: best for Missouri-only registrations

Focused on Missouri$199 plus the state fee, then $99 a year

Missouri Registered Agent.co takes second place: $199 above the state fee, first agent year covered, then $99 a year.

It lists the same prices as MO Registered Agent.org.

What the price covers

  • The filing is done for you
  • One year of agent service is part of the price

What works

  • A year of agent service is included
  • $99 a year for the agent after that
  • $199 plus the state fee

What to weigh

  • The home state needs a different agent
Visit Missouri Registered Agent.coPartner link. We may earn money if you buy.

Top of the class

3. Mainstay Filing: best for several registrations

Any state$199 plus the state fee, then $149 a year

Our third choice, Mainstay Filing: it files the Missouri registration for $199 plus the state's fee, and the first agent year costs nothing.

MO Registered Agent.org comes in $100 lower across three years, which holds this one back from first.

From year two the agent is $149 a year, whichever state you register in.

What the price covers

  • Filing made with the state
  • The registered agent costs nothing in year one
  • The same price in each state

What works

  • $199 plus the state fee
  • All fifty states covered
  • No agent fee for year one

What to weigh

  • MO Registered Agent.org charges $50 less for the agent
Visit Mainstay FilingPartner link. We may earn money if you buy.

A comparison of the services

#ServiceFirst yearFrom year twoThree-year total
1MO Registered Agent.org$199$99/yr$397Visit MO Registered Agent.orgPartner link. We may earn money if you buy.
2Missouri Registered Agent.co$199$99/yr$397Visit Missouri Registered Agent.coPartner link. We may earn money if you buy.
3Mainstay Filing$199$149/yr$497Visit Mainstay FilingPartner link. We may earn money if you buy.
Company prices as listed on November 13, 2026. Every row also owes the $105 state fee.

The tasks

  1. Task 1

    See if your LLC must register in Missouri

    An LLC formed in another state has to register in Missouri before it does business there. If you skip it: Missouri courts will not hear a claim from an unregistered LLC (RSMo 347.163.1). The agreements are not voided (RSMo 347.163.2).

    Source: Look it up at dor.mo.gov; our reading dates from October 2026

  2. Task 2

    Order the home-state certificate

    Enclose certificate of good standing/existence from the home state, dated within 60 days.

    Order it once everything else is ready.

  3. Task 3

    Name a registered agent for Missouri

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

    Our recommendations cover this role.

    Source: Look it up at revisor.mo.gov; our reading dates from October 2026

  4. Task 4

    Work through the Application for Registration of a Foreign Limited Liability Company

    The office, the Missouri Secretary of State, Corporations Division, wants the filing above plus $105.

    Source: Look it up at sos.mo.gov; our reading dates from October 2026

  5. Task 5

    Look ahead to the recurring filing

    Missouri asks nothing recurring of a foreign LLC.

Costs, task by task

What forPaid toTotal
Foreign registrationGoes to the state$105
Optional serviceService$199 in year one
State fees for the first three yearsGoes to the state$105
The state numbers are official Missouri fees, sourced below. The three-year line combines the filing fee, the reports in years two and three and any minimum tax.

How we ordered the Missouri picks

pulled ahead of on course fee across three years, a criterion worth 34%.

Three years with MO Registered Agent.org add up to $397, which is $100 under Mainstay Filing.

Common questions

What is Missouri's fee for a foreign LLC?

$105 at the state office. A service adds $199.

Which form do I file to register?

Registering here means sending the Application for Registration of a Foreign Limited Liability Company (Form LLC 4) to the Missouri Secretary of State, Corporations Division.

Do I need a certificate from my home state?

Yes: certificate of good standing/existence from the home state, issued within 60 days of filing.

What if the LLC does business there without registering?

Missouri courts will not hear a claim from an unregistered LLC (RSMo 347.163.1). The agreements are not voided (RSMo 347.163.2).

What is due after registering?

No recurring report for foreign LLCs in Missouri.

Which service should handle the registration?

Go with MO Registered Agent.org: the Missouri registration is filed for $199 and includes a year of agent service, with renewal at $99. Then Missouri Registered Agent.co and Mainstay Filing.

Reading list and sources

  1. Further reading on RSMo 347.037: our unit draws on revisor.mo.gov, which we reopened in August 2026 so you can compare it with the original.
  2. Further reading on Missouri formation fee: Filing fee, official source: our unit draws on sos.mo.gov, which we reopened in October 2026 so you can compare it with the original.
  3. Further reading on Missouri registered agent statute: our unit draws on revisor.mo.gov, which we reopened in October 2026 so you can compare it with the original.
  4. Further reading on Missouri Secretary of State, Corporations: our unit draws on sos.mo.gov, which we reopened in October 2026 so you can compare it with the original.
  5. Further reading on Form LLC 4, foreign LLC registration: our unit draws on sos.mo.gov, which we reopened in October 2026 so you can compare it with the original.
  6. Further reading on RSMo 347.153, registration of foreign LLCs: our unit draws on revisor.mo.gov, which we reopened in October 2026 so you can compare it with the original.
  7. Further reading on RSMo 347.163, transacting business and penalties: our unit draws on revisor.mo.gov, which we reopened in October 2026 so you can compare it with the original.
  8. Further reading on Missouri Department of Revenue, business registration: our unit draws on dor.mo.gov, which we reopened in October 2026 so you can compare it with the original.
  9. MO Registered Agent.org: pricing page, as seen on November 13, 2026
  10. Missouri Registered Agent.co: pricing page, as seen on November 13, 2026
  11. Mainstay Filing: Missouri service page, as seen on November 13, 2026