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Short reply · Missouri

3 Best Foreign Registration Services in Missouri (2026) and the Facts Behind Them

Missouri 2026 ranking of foreign registration services: Mainstay Filing ($199), MO Registered Agent.org ($199) and Missouri Registered Agent.co ($199). Registering costs $105 at Missouri, whoever files, plus $397 to $497 to a service over three years.

LLC Q and A editorial team ·

Quick answers

State registration fee
$105
Home-state certificate?
Yes (60 day age limit)
Following
None
Pick
Mainstay Filing, MO Registered Agent.org then Missouri Registered Agent.co

Missouri ranking

Scoring is explained on the method page.
1Top pick

1. Mainstay Filing: best for registering in several states

$199 plus state fee, then $149/yr

Mainstay Filing ranks first since registration is $199 and the registered agent costs nothing until year two.

Not the lowest bill: MO Registered Agent.org is $100 less over three years, in Missouri only.

No registered agent fee in year one; $149 a year from year two.

Price covers

  • Out-of-state registration filed
  • Registered agent, free first year
  • Same price in any state

For

  • Same fee in every state
  • $199 plus Missouri's fee
  • No registered agent fee in year one

Against

  • MO Registered Agent.org renews its agent $50 lower
Mainstay Filing sitePartner link. We may earn money if you buy.
2Missouri only

2. MO Registered Agent.org: best for registering in just this state

$199 plus state fee, then $99/yr

MO Registered Agent.org ranks second since registration is $199 over the state fee, agent covered in year one, then $99 a year.

Price covers

  • Missouri registration filing
  • First-year agent included

For

  • Agent renews at $99
  • Year-one agent included
  • Service fee $199

Against

  • Missouri only; home state needs another agent
MO Registered Agent.org sitePartner link. We may earn money if you buy.
3Missouri only

3. Missouri Registered Agent.co: best for another local option

$199 plus state fee, then $99/yr

Missouri Registered Agent.co ranks third since registration is $199 over the state fee, agent covered in year one, then $99 a year.

It charges exactly what MO Registered Agent.org charges.

Price covers

  • Missouri registration filing
  • First-year agent included

For

  • Service fee $199
  • Year-one agent included
  • Agent renews at $99

Against

  • Missouri only; home state needs another agent
Missouri Registered Agent.co sitePartner link. We may earn money if you buy.

Comparison

#CompanyYear 1Per year afterTotal, 3 yearsIncludes
1Mainstay Filing$199$149/yr$497Out-of-state registration filed; registered agent, free first year; same price in any stateMainstay Filing sitePartner link. We may earn money if you buy.
2MO Registered Agent.org$199$99/yr$397missouri registration filing; First-year agent includedMO Registered Agent.org sitePartner link. We may earn money if you buy.
3Missouri Registered Agent.co$199$99/yr$397missouri registration filing; First-year agent includedMissouri Registered Agent.co sitePartner link. We may earn money if you buy.
Prices as of November 13, 2026. State fees are in the checklist below.

Questions and replies

Must my LLC register here?

Before it does business in Missouri, with the Missouri Secretary of State, Corporations Division.

Unregistered, an LLC may face it loses the right to sue as plaintiff (RSMo 347.163.1).

source of record: dor.mo.gov, confirmed October 2026

Cost to register?

$105 to the state, plus $199 for a service.

State fees through year three: $105. source of record: sos.mo.gov, confirmed October 2026

What registers the LLC?

Lodge the Application for Registration of a Foreign Limited Liability Company (Form LLC 4) at the Missouri Secretary of State, Corporations Division; one filing registers the LLC.

Attach certificate of good standing/existence from the home state issued in the last 60 days.

What is due after registering?

No recurring report for foreign LLCs here.

Why this order?

Chores removed from your list (26%) goes to Mainstay Filing.

62% of the total is three-year price plus chores removed from your list.

Two states in play, so a provider for all states outranks MO Registered Agent.org.

Method

What Missouri requires of a foreign LLC

ItemDetailSource
Fee to register$105source of record: sos.mo.gov, confirmed October 2026
Home-state certificateYes, 60 dayssource of record: dor.mo.gov, confirmed October 2026
State fees, 3 years$105Total of the rows above
Rows link to official sources; the final row is our own addition of filing, two reports and any minimum tax.

More replies

Is an agent needed at home too?

Yes. Each state has its own rule. Mainstay Filing serves both from one account.

Three-year cost of each?

Mainstay Filing will run $497, MO Registered Agent.org will run $397, Missouri Registered Agent.co will run $397, with state fees on top.

Where do the numbers come from?

Official Missouri sources for the state side, published prices for the service side.

Is a service required?

No law requires a service; it is a paid convenience.

Does a service file it?

All of them do; only the service fee differs.

Which foreign registration service should I use in Missouri?

Mainstay Filing: $199 above the state fee registers you, the registered agent is free in year one and $149 a year after. Behind it: MO Registered Agent.org and Missouri Registered Agent.co.

Sources

  1. Reference line for RSMo 347.037, drawn from revisor.mo.gov and confirmed August 2026, as noted by our editors
  2. Reference line for Missouri formation fee: Filing fee, drawn from sos.mo.gov and confirmed October 2026, as noted by our editors
  3. Reference line for Missouri registered agent statute, drawn from revisor.mo.gov and confirmed October 2026, as noted by our editors
  4. Reference line for Missouri Secretary of State, Corporations, drawn from sos.mo.gov and confirmed October 2026, as noted by our editors
  5. Reference line for Form LLC 4, foreign LLC, drawn from sos.mo.gov and confirmed October 2026, as noted by our editors
  6. Reference line for RSMo 347.153, registration of foreign, drawn from revisor.mo.gov and confirmed October 2026, as noted by our editors
  7. Reference line for RSMo 347.163, transacting business and, drawn from revisor.mo.gov and confirmed October 2026, as noted by our editors
  8. Reference line for Missouri Department of Revenue, business, drawn from dor.mo.gov and confirmed October 2026, as noted by our editors
  9. Mainstay Filing Missouri service page, read November 13, 2026
  10. MO Registered Agent.org pricing page, read November 13, 2026
  11. Missouri Registered Agent.co pricing page, read November 13, 2026