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Your question, answered · Missouri

3 Best LLC Services in Missouri (2026): Your Questions Answered

Ask about MO Registered Agent.org ($199), Missouri Registered Agent.co ($199) and Mainstay Filing ($199), in that order, when you need LLC formation services in Missouri in 2026. Every option pays Missouri $50 to file, then charges $397 to $597 for three years of service.

Answered by the Ask About LLC editorial team ·

The short answers

What does the state charge?
$50, one time
What comes after?
Nothing to file
Registered agent
Yes, name one
Our pick
MO Registered Agent.org, Missouri Registered Agent.co then Mainstay Filing

Who should you ask in Missouri?

The order follows our five questions: three-year cost first, then how much the price covers.

1Ask this one first

1. MO Registered Agent.org: best for companies that stay local

$199 plus the state fee, then $99 a year

MO Registered Agent.org is the one to ask first in Missouri because it opens at $199 with the first agent year included and renews at $99.

Where the three-year total is smaller, cost carries the day, and here it is smaller than at Mainstay Filing.

What the price covers

  • Missouri formation filing
  • A year of agent service to start

Good news

  • A renewal of $99
  • No agent charge in year one
  • Starts at $199 over the state fee

The catch

  • Add $99 for EIN help
Visit MO Registered Agent.orgPartner link. We may earn money if you buy.
2Missouri only

2. Missouri Registered Agent.co: best for another local choice

$199 plus the state fee, then $99 a year

Missouri Registered Agent.co is the second answer because it opens at $199 with the first agent year included and renews at $99.

It charges the same as MO Registered Agent.org, which makes the order between them a close call.

What the price covers

  • Missouri formation filing
  • A year of agent service to start

Good news

  • A renewal of $99
  • Starts at $199 over the state fee
  • No agent charge in year one

The catch

  • Add $99 for EIN help
Visit Missouri Registered Agent.coPartner link. We may earn money if you buy.
3Works in every state

3. Mainstay Filing: best for formation and agent for one price

$199 a year, with the $50 state fee added

Mainstay Filing takes third place: formation and registered agent service arrive together for $199 a year, with the EIN application included.

MO Registered Agent.org adds up to $200 less over three years, enough to earn the better spot.

What the price covers

  • Your LLC formation, filed with the state
  • Registered agent for the whole year
  • EIN application
  • State fees passed through at cost

Good news

  • No jump at renewal ($199)
  • Formation, agent for $199 a year
  • EIN application is in the price

The catch

  • Renews $100 a year above MO Registered Agent.org
  • Missouri has no report to file, so the bundle adds less
Visit Mainstay FilingPartner link. We may earn money if you buy.

How do they compare?

#WhoYear oneAt renewal3-year totalIncluded
1MO Registered Agent.org$199$99/yr$397missouri formation filing; A year of agent service to startVisit MO Registered Agent.org
Partner link. We may earn money if you buy.
2Missouri Registered Agent.co$199$99/yr$397missouri formation filing; A year of agent service to startVisit Missouri Registered Agent.co
Partner link. We may earn money if you buy.
3Mainstay Filing$199$199/yr$597Your LLC formation, filed with the state; registered agent for the whole year; EIN applicationVisit Mainstay Filing
Partner link. We may earn money if you buy.
Prices as of November 13, 2026. The state's own fees are in the checklist below.

What owners want to know

What will forming an LLC cost in this state?

Set aside $50 for the state, plus $199 if you hire help in the first year.

Over three years the state collects $50, filing fee included. sos.mo.gov, read in October 2026 for this answer

Which form do I file, and where does it go?

The paper that starts the company is the Articles of Organization (Form LLC-1), and it is submitted to the Missouri Secretary of State.

sos.mo.gov, read in October 2026 for this answer

Does this state require a registered agent?

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

A Missouri resident, or a corporation authorized in Missouri, whose business office is the registered office.

revisor.mo.gov, read in October 2026 for this answer

Does the state bill me every year?

Missouri wants no report, which leaves nothing to file.

Can I file it myself instead of hiring a service?

Nothing stops you. Without a service your three-year bill is the state's $50.

Paying for help raises the three-year total by $397 to $597, which buys the paperwork and the agent role.

What put number one on top?

MO Registered Agent.org does best on what you pay over three years, which carries 33% of our score.

Two questions carry most of the weight, what you pay over three years (33%) and chores the price takes care of (29%), and three smaller ones follow.

MO Registered Agent.org totals $397 across three years, which is $200 under Mainstay Filing.

How we choose

What does Missouri require to form an LLC?

QuestionThe answerLook it up
Fee to file the LLC$50sos.mo.gov, read in October 2026 for this answer
Registered agentYes, name onerevisor.mo.gov, read in October 2026 for this answer
State fees, years one to three$50The rows above, added up
How was the bottom line figured? Add the filing fee, the next two reports and the minimum tax if the state has one. Anything with no fixed price, a newspaper notice for instance, is described above and kept out of the sum.

Still wondering?

Is the EIN application included?

Only Mainstay Filing covers it at no added cost. At the others, MO Registered Agent.org bills $99 and Missouri Registered Agent.co bills $99.

How do the three-year totals compare?

For three years you would pay $397 at MO Registered Agent.org, $397 at Missouri Registered Agent.co, $597 at Mainstay Filing for the services alone.

Where do these numbers come from?

Each state fee links to its official page, and each service price is read from the company's own site.

Do I have to use a service?

No. What the law asks for is a filing, and it does not say who has to send it.

What does the LLC owe the state yearly?

Missouri wants no report, which leaves nothing to file.

Who should I ask first about a LLC service in Missouri?

MO Registered Agent.org, because with a $99 renewal, three years total $397. After that, Missouri Registered Agent.co and Mainstay Filing.

Where did we look this up?

  1. Our answer on RSMo 347.037 rests on revisor.mo.gov, a page we confirmed August 2026 and still point you to
  2. Our answer on Missouri formation fee: Filing fee rests on sos.mo.gov, a page we confirmed October 2026 and still point you to
  3. Our answer on Missouri registered agent statute rests on revisor.mo.gov, a page we confirmed October 2026 and still point you to
  4. The MO Registered Agent.org pricing page, as it stood on November 13, 2026
  5. The Missouri Registered Agent.co pricing page, as it stood on November 13, 2026
  6. The Mainstay Filing Missouri service page, as it stood on November 13, 2026