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Formation ClassClass is in session: LLC paperwork, state by state.

Class 3 · Missouri

Foreign LLC Registration Class, Missouri (2026): 5 Assignments and the 3 Best Services

Graded for 2026, the best help with registering an LLC from another state in Missouri comes from Mainstay Filing ($199), MO Registered Agent.org ($199) and Missouri Registered Agent.co ($199), in that order. Start by deciding whether you must register; 5 assignments and a $105 fee follow.

Taught by the Formation Class faculty

Read this first

Registration fee$105Source for this: sos.mo.gov, October 2026
Home-state certificate60 daysMust be issued within
Maintenance filingNoneNone for foreign LLCs
State fees over three years$105State charges only
Class assignments5From first to last

What this class teaches

  • Whether Missouri registration applies to your LLC
  • How the filing gets made
  • Staying in good standing
  • Which services we recommend and why

Who we would hire in Missouri

Five weighted criteria set the order (see how we grade), and three-year tuition and homework done count most.
Class favorite

1. Mainstay Filing: best for a second state and beyond

Service $199, renewal $149 a year

In Missouri, Mainstay Filing sits at the top of the class: $199 over the state fee, the registered agent free in year one and $149 a year after that.

You pay $100 extra across three years compared with MO Registered Agent.org, and you keep less of the paperwork.

After year one, agent service costs $149 a year.

Covered by the tuition

  • Registration paperwork handled
  • The registered agent costs nothing in year one
  • A service for all fifty states

Strengths

  • The agent costs nothing in year one
  • $199 on top of Missouri's fee
  • The same fee in every state

Weak spots

  • MO Registered Agent.org charges $50 less for the agent
One-state plan

2. MO Registered Agent.org: best for adding just Missouri

Service $199, renewal $99 a year

MO Registered Agent.org lands in second place: $199 above the state fee to register, then $99 a year.

Covered by the tuition

  • Registration paperwork handled
  • One year of agent service is part of the price

Strengths

  • $199 above the state fee
  • A small $99 renewal
  • A year of agent service is included

Weak spots

  • Serves Missouri alone
One-state plan

3. Missouri Registered Agent.co: best for registering only in Missouri

Service $199, renewal $99 a year

Missouri Registered Agent.co lands in third place: $199 above the state fee to register, then $99 a year.

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

Covered by the tuition

  • Registration paperwork handled
  • One year of agent service is part of the price

Strengths

  • $199 above the state fee
  • A small $99 renewal
  • A year of agent service is included

Weak spots

  • Serves Missouri alone

The services compared

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

How registration works in Missouri

  1. Assignment
    1

    Find out whether you have to register

    LLCs formed outside Missouri file a foreign registration before transacting business here. Skipping registration has a price: Until it registers, the LLC cannot sue in Missouri's courts (RSMo 347.163.1). Contracts it has already signed still hold (RSMo 347.163.2).

    Textbook page: Source for this: dor.mo.gov, October 2026

  2. Assignment
    2

    Ask your home state for proof of good standing

    Enclose certificate of good standing/existence from the home state, issued inside 60 days.

    Ask for the certificate shortly before filing day.

  3. Assignment
    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.

    Each of the graded services serves as the registered agent.

    Textbook page: Source for this: revisor.mo.gov, October 2026

  4. Assignment
    4

    Put together and mail the Application for Registration of a Foreign Limited Liability Company

    Finish the Application for Registration of a Foreign Limited Liability Company (Form LLC 4), tuck in $105, and send everything to the Missouri Secretary of State, Corporations Division.

    Textbook page: Source for this: sos.mo.gov, October 2026

  5. Assignment
    5

    Stay registered

    Missouri sets no yearly report for foreign LLCs.

What this class costs

What forPayeeSum
Filing to registerThe state$105
Optional serviceThe service$199 for year one
Three years of state feesThe state$105
Here is how the three-year state row works: filing fee, plus the report in each of years two and three, plus any yearly minimum tax. Service fees get their own rows.

Why the list runs this way

Homework the price does settled first place in Missouri. It is worth 34% of the grade, and the rest comes from tuition across three years, year-two tuition, fit with the state class and fees a student can read.

MO Registered Agent.org renews for less, yet reaching several states counted for more.

Common questions

Which fees does Missouri take from a foreign LLC?

$105 to the state. A service adds $199.

Which form do I file to register?

Fill in the form named in assignment 4 and send it 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?

Until it registers, the LLC cannot sue in Missouri's courts (RSMo 347.163.1). Contracts it has already signed still hold (RSMo 347.163.2).

What is due after registering?

No recurring report for foreign LLCs in Missouri.

Which service should handle the registration?

Mainstay Filing, MO Registered Agent.org and Missouri Registered Agent.co, from the highest grade to the lowest.

See also

Textbook pages and extra reading

  1. Extra credit: compare what we say about RSMo 347.037 with revisor.mo.gov, last read August 2026.
  2. Extra credit: compare what we say about Missouri formation fee: Filing fee, official source with sos.mo.gov, last read October 2026.
  3. Extra credit: compare what we say about Missouri registered agent statute with revisor.mo.gov, last read October 2026.
  4. Extra credit: compare what we say about Missouri Secretary of State, Corporations with sos.mo.gov, last read October 2026.
  5. Extra credit: compare what we say about Form LLC 4, foreign LLC registration with sos.mo.gov, last read October 2026.
  6. Extra credit: compare what we say about RSMo 347.153, registration of foreign LLCs with revisor.mo.gov, last read October 2026.
  7. Extra credit: compare what we say about RSMo 347.163, transacting business and penalties with revisor.mo.gov, last read October 2026.
  8. Extra credit: compare what we say about Missouri Department of Revenue, business registration with dor.mo.gov, last read October 2026.
  9. Mainstay Filing's Missouri service page, read on November 13, 2026
  10. MO Registered Agent.org's pricing page, read on November 13, 2026
  11. Missouri Registered Agent.co's pricing page, read on November 13, 2026