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Researched and written by the Launchwise Review editorial team
Launchwise Review

Rankings of registered agents, LLC formation and foreign registration services in all 50 states.

Launch guide · Missouri · foreign registration

3 Best Foreign Registration Services in Missouri (2026)

Researched and written by the Launchwise Review editorial team
For a 2026 launch in Missouri, Launchwise Review grades foreign registration services this way: MO Registered Agent.org ($199), Mainstay Filing ($199) and Missouri Registered Agent.co ($199). MO Registered Agent.org earns the top grade here: $199 plus the state fee, year-one registered agent service included, then $99 a year for the agent.
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Our top pick in Missouri

1. MO Registered Agent.org: best for companies adding only Missouri

$199 for the service and the state fee besides; agent service is $99 a year from the second year

Our mark 9.1 out of 10

Top grade, MO Registered Agent.org: it registers the company in Missouri for $199, first agent year included, then $99 a year.

You get an in-state street address for the registered office, and any papers served on the company are scanned into your online account.

On a three-year bill it comes in under Mainstay Filing, and that is a heavily weighted criterion for us.

In the price

  • The registration filing
  • The first year of registered agent service

Pros

  • Free registered agent service in year one
  • Registers the company for $199, state fee extra
  • Keeps your agent for $99 yearly

Less good

  • Missouri only; the home state needs its own agent
  • EIN application costs extra ($99)
Visit MO Registered Agent.orgPartner link. We may earn money if you buy.
Read the MO Registered Agent.org launch review
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Fifty-state coverage

2. Mainstay Filing: best for founders working in several states

Pay $199 plus the state fee ($304 in total at checkout), then $149 a year for the agent

Our mark 8.7 out of 10

Next up is Mainstay Filing: the Missouri registration costs $199, the first registered agent year is free, and later years are $149.

Your first year as agent is free; each year after that is $149, wherever you register.

MO Registered Agent.org is $100 lower across three years, which puts Mainstay Filing behind it on cost.

In the price

  • Registration paperwork prepared and sent in
  • Registered agent service costs nothing in year one
  • Anything served on the company scanned the same business day at no fee

Pros

  • Registered agent service is free the first year
  • One price in every state
  • Papers served on the company are scanned the same business day, free
  • $199 for the service, with the state fee added

Less good

  • The agent costs $149 a year after year one, $50 above MO Registered Agent.org
Visit Mainstay FilingPartner link. We may earn money if you buy.
Read the Mainstay Filing launch review
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Low renewal

3. Missouri Registered Agent.co: best for Missouri registrations only

Service $199, state fee extra; the agent then costs $99 each year

Our mark 8.6 out of 10

Rounding out the list is Missouri Registered Agent.co: it registers the company in Missouri for $199, first agent year included, then $99 a year.

You get an in-state street address for the registered office, and any papers served on the company are scanned into your online account.

Missouri Registered Agent.co copies MO Registered Agent.org on price and features, so the pair is close to level.

In the price

  • The registration filing
  • One year of registered agent service to begin with

Pros

  • $199 to register, plus the state fee
  • Your first registered agent year comes at no cost
  • Then $99 a year to keep the agent

Less good

  • Missouri only; the home state needs its own agent
  • EIN application costs extra ($99)
Visit Missouri Registered Agent.coPartner link. We may earn money if you buy.
Read the Missouri Registered Agent.co launch review

The 3 grades at a glance

Place Company Launch grade Service price Second year Best fit Go
1 MO Registered Agent.org 9.1 $199 $99/yr The lowest agent renewal on this page Visit MO Registered Agent.orgPartner link. We may earn money if you buy.
2 Mainstay Filing 8.7 $199 $149/yr Founders opening a second state Visit Mainstay FilingPartner link. We may earn money if you buy.
3 Missouri Registered Agent.co 8.6 $199 $99/yr The lowest agent renewal on this page Visit Missouri Registered Agent.coPartner link. We may earn money if you buy.
The 10-point grades are editorial, built from the criteria on How we rank. They are not customer ratings.

Missouri foreign registration service cost in 2026: first year, renewals, three-year total

Company Year 1 Year 2 Year 3 Three years, total Agent covered, year one
MO Registered Agent.org $199 $99 $99 $397 Included
Mainstay Filing $199 $149 $149 $497 Free
Missouri Registered Agent.co $199 $99 $99 $397 Included
Prices were copied from each company's own pages on November 12, 2026. Add Missouri's $105 registration fee to any row; it is not in the totals.

What drove the grades

What made the call in Missouri was cost to launch and stay. The grading method sets cost to launch and stay at 26%, launch paperwork handled at 26% and renewal behavior, state match and price transparency at 48% combined.

MO Registered Agent.org comes to $397 over three years, $100 under Mainstay Filing. Both include year one, so the renewal price broke the tie.

Every criterion and weight is listed on How we rank.

Opening in Missouri as a foreign LLC: fee, form and office

Your registration goes to the Missouri Secretary of State, Corporations Division, on the Application for Registration of a Foreign Limited Liability Company (Form LLC 4). Budget $105 for the state. Have certificate of good standing/existence from the home state in hand too, dated within 60 days of filing; Missouri asks for it.

There is no yearly report for foreign LLCs in Missouri.

Before you file, get these together

  • Certificate of good standing/existence from the home state, issued within 60 days of your filing date.
  • Your company's exact legal name and the date it was formed at home.
  • A registered agent with a street address in the state; every company graded on this page can serve.
  • The $105 state fee, ready to pay with the filing.

What skipping Missouri registration can cost you

Without registration, an outside LLC cannot bring a lawsuit in Missouri courts (RSMo 347.163.1). Contracts it signs remain valid (RSMo 347.163.2).

Quick answers about Missouri foreign registration services

When does an LLC from elsewhere have to register in Missouri?

Once it does business there. Until then it cannot bring a lawsuit in the state's courts.

What should I budget to bring an existing LLC into Missouri?

The state fee is $105; add a service fee of $199.

Which form brings a foreign LLC into Missouri?

Ask the Missouri Secretary of State, Corporations Division for the Application for Registration of a Foreign Limited Liability Company (Form LLC 4).

Do I need a document from my home state first?

Yes, order certificate of good standing/existence from the home state and file within 60 days of its date.

Does the foreign LLC still need a registered agent?

Yes. Keep a registered agent with a street address in the state for as long as the company is registered there.

Which service is the best way to register a foreign LLC in Missouri?

MO Registered Agent.org, because $199 beyond the state fee gets the company into Missouri, with the agent renewing at $99.

More from us

Sources and dates

  1. RSMo 347.037, dated August 2026
  2. Missouri formation fee: Filing fee, official source, dated October 2026
  3. Missouri registered agent statute, dated October 2026
  4. Missouri Secretary of State, Corporations, dated October 2026
  5. Form LLC 4, foreign LLC registration, dated October 2026
  6. RSMo 347.153, registration of foreign LLCs, dated October 2026
  7. RSMo 347.163, transacting business and penalties, dated October 2026
  8. Missouri Department of Revenue, business registration, dated October 2026
  9. From MO Registered Agent.org: pricing and service pages, copied November 12, 2026
  10. From Mainstay Filing: Missouri service page, copied November 12, 2026
  11. From Missouri Registered Agent.co: pricing and service pages, copied November 12, 2026