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Formation Scorecard

Foreign registration scorecard · Missouri

3 Best Foreign Registration Services in Missouri (2026)

On the Formation Scorecard 2026 scorecard for foreign registration services in Missouri the order reads Mainstay Filing ($199), MO Registered Agent.org ($199) and Missouri Registered Agent.co ($199). Mainstay Filing posts the top score: $199 on top of the state's fee, with a free first year as your registered agent and the same price in every state.
Researched and written by the Formation Scorecard editorial team
Rank #1 Our top pick

1. Mainstay Filing: best for companies spread across states

9.4 Editor score out of 10
$199 service fee, $304 due at checkout including the state fee; agent $149 yearly from year two

Mainstay Filing leads the card: it files the Missouri registration for $199 and acts as your registered agent, free for year one and $149 a year after.

The agent is free in year one and $149 a year after that, wherever the company registers.

Mainstay's three-year total sits $100 above MO Registered Agent.org's, which the extra coverage earns back in our scoring.

What you get

  • Registration prepared and submitted
  • The first registered agent year at no charge
  • Same-business-day scans of service of process at no charge

Strengths

  • Served papers scanned on the day they arrive, free
  • Registered agent free for year one
  • $199 service fee, with the state fee on top
  • Same price across all fifty states

Watch for

  • Agent renewal of $149 is $50 more than MO Registered Agent.org charges
Visit Mainstay FilingPartner link. We may earn money if you buy. Mainstay Filing: the full write-up
Rank #2 Best local option

2. MO Registered Agent.org: best for companies that add just Missouri

8.9 Editor score out of 10
$199 on top of the state fee, then the agent at $99 a year from year two

MO Registered Agent.org takes second spot: $199 beyond the state fee to register in Missouri, agent renewing at $99.

The plan puts the company at an in-state street address and scans papers served on it to your online account.

What you get

  • The registration filing
  • Year-one registered agent service included

Strengths

  • Then $99 a year to keep the agent
  • $199 to register, state fee extra
  • Includes the first registered agent year

Watch for

  • Limited to Missouri; your home state still needs an agent
  • $99 extra for the EIN application
Visit MO Registered Agent.orgPartner link. We may earn money if you buy. MO Registered Agent.org: the full write-up
Rank #3 Best value here

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

8.7 Editor score out of 10
Service fee $199 with the state fee added; agent renewing at $99

Missouri Registered Agent.co takes third spot: $199 beyond the state fee to register in Missouri, agent renewing at $99.

The plan puts the company at an in-state street address and scans papers served on it to your online account.

Missouri Registered Agent.co mirrors MO Registered Agent.org on price and plan features, so little divides them.

What you get

  • The registration filing
  • One year of registered agent service

Strengths

  • A $199 service fee before the state's
  • A year of registered agent service is built in
  • $99 per year for the agent after the first

Watch for

  • Limited to Missouri; your home state still needs an agent
  • $99 extra for the EIN application
Visit Missouri Registered Agent.coPartner link. We may earn money if you buy. Missouri Registered Agent.co: the full write-up

The 3 entries on one card

Place Service Card score Service fee Year two Best for Go
1 Mainstay Filing 9.4 $199 $149/yr Companies spread over several states Visit Mainstay FilingPartner link. We may earn money if you buy.
2 MO Registered Agent.org 8.9 $199 $99/yr The lowest agent renewal we rank here Visit MO Registered Agent.orgPartner link. We may earn money if you buy.
3 Missouri Registered Agent.co 8.7 $199 $99/yr The lowest agent renewal we rank here Visit Missouri Registered Agent.coPartner link. We may earn money if you buy.

Formation Scorecard assigns each mark out of 10 itself, using the weighted criteria on How we rank. No customer ratings feed in.

Missouri foreign registration service cost in 2026: first year, renewal and the three-year tally

Service First year Second year Third year Three-year tally Agent paid in year one
Mainstay Filing $199 $149 $149 $497 Free
MO Registered Agent.org $199 $99 $99 $397 Included
Missouri Registered Agent.co $199 $99 $99 $397 Included

Each price comes from the company's own site, read on November 12, 2026. Add Missouri's $105 registration fee to each row; the tally above leaves it out.

Why the order falls this way

Coverage of the price decided the Missouri card. The method puts 25% on cost across three years and 25% on coverage of the price, then shares 50% among renewal terms, state-by-state fit and pricing clarity.

A foreign registration touches two states, so a single provider at one price in both earned the most coverage points, ahead of MO Registered Agent.org.

Every criterion and weight appears on How we rank.

Foreign LLC registration in Missouri: fee, form and filing office

An outside company registers by sending the Application for Registration of a Foreign Limited Liability Company (Form LLC 4) to the Missouri Secretary of State, Corporations Division, with a $105 state fee. Missouri additionally requires certificate of good standing/existence from the home state, dated no more than 60 days before filing.

Missouri asks nothing yearly from foreign LLCs.

Gather these before filing

  • Certificate of good standing/existence from the home state, issued no earlier than 60 days before filing.
  • The company name exactly as the home state has it, plus the date it was formed.
  • An in-state registered agent; any service on this card can fill that role.
  • The state fee of $105, sent in with the filing.

The price of ignoring Missouri registration

An unregistered outside LLC cannot sue in Missouri courts until it registers (RSMo 347.163.1). Its contracts remain valid (RSMo 347.163.2).

Missouri foreign registration service: quick questions

Does Missouri make an outside LLC register before operating?

Yes, when the company does business there. Until it registers, the state's courts are closed to its lawsuits.

What will foreign registration run in Missouri?

Expect $105 for the state plus $199 for the service.

What is the registration form called in Missouri?

The form goes to the Missouri Secretary of State, Corporations Division; its exact name is in the facts above.

Is a home-state certificate part of the Missouri filing?

Yes, the state wants certificate of good standing/existence from the home state, no older than 60 days.

Does a registered company still need a registered agent?

Yes, a registered agent with an in-state street address has to stay on file.

Which foreign registration service leads the card for Missouri?

Mainstay Filing, since $199 plus state fees in any state, year-one registered agent service included.

See also

Where the figures come from

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