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Straight answers · Missouri

3 Best Registered Agents in Missouri (2026): Who to Ask First

Wondering about registered agents in Missouri, for 2026 our order is MO Registered Agent.org ($99 a year), Mainstay Filing ($149 a year) and Missouri Registered Agent.co ($99 a year). Year one runs $99 to $149, and three years add up to $297 to $447.

Answered by the Ask About LLC editorial team ·

The short answers

Is an agent required?
Yes, the law says so
What the law calls it
Registered agent
Typical agent price
$99 to $149 per year
Our pick
MO Registered Agent.org, Mainstay Filing then Missouri Registered Agent.co

Who should you ask in Missouri?

Prices come from each company's own pricing. Here is how we choose.

1Our first answer

1. MO Registered Agent.org: best for one-state companies

$99 a year, then $99 when it renews

MO Registered Agent.org is the one to ask first in Missouri because it supplies an agent in the state for $99 a year.

Yes, it costs less than Mainstay Filing over three years, and cost is the question we weigh most.

What the price covers

  • An in-state street address
  • Legal papers scanned to your account

Good news

  • Smaller yearly bill than the national pick
  • Only $99 a year

The catch

  • Covers Missouri and nothing else
Visit MO Registered Agent.orgPartner link. We may earn money if you buy.
2Works in every state

2. Mainstay Filing: best for one price in any state

$149 a year, then $149 when it renews

Mainstay Filing takes second place: $149 a year follows the company into any new state.

MO Registered Agent.org adds up to $150 less over three years, enough to earn the better spot.

What the price covers

  • An address in the state
  • Three official mailings scanned each year for free
  • Also handles corporations, LPs, LLPs and nonprofits

Good news

  • Flat $149 a year, no change at renewal
  • Usable wherever the LLC registers

The catch

  • MO Registered Agent.org charges $50 less each year
  • Nothing beyond the agent role
Visit Mainstay FilingPartner link. We may earn money if you buy.
3Missouri only

3. Missouri Registered Agent.co: best for owners who prefer a local firm

$99 a year, then $99 when it renews

Missouri Registered Agent.co is the third answer because it supplies an agent in the state for $99 a year.

Price for price it ties with MO Registered Agent.org.

What the price covers

  • An in-state street address
  • Legal papers scanned to your account

Good news

  • Smaller yearly bill than the national pick
  • Only $99 a year

The catch

  • Covers Missouri and nothing else
Visit Missouri Registered Agent.coPartner link. We may earn money if you buy.

The picks side by side

#CompanyFirst yearAt renewal3-year totalIncluded
1MO Registered Agent.org$99$99/yr$297An in-state street address; legal papers scanned to your accountVisit MO Registered Agent.org
Partner link. We may earn money if you buy.
2Mainstay Filing$149$149/yr$447an address in the state; three official mailings scanned each year for free; Also handles corporations, LPs, LLPs and nonprofitsVisit Mainstay Filing
Partner link. We may earn money if you buy.
3Missouri Registered Agent.co$99$99/yr$297An in-state street address; legal papers scanned to your accountVisit Missouri Registered Agent.co
Partner link. We may earn money if you buy.
Read on November 13, 2026; three years means year one plus two renewals.

What owners want to know

Can the LLC go without a registered agent?

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

Statute: RSMo 347.030. revisor.mo.gov, read in October 2026 for this answer

Can I name anyone?

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

A qualifying owner can serve at no cost.

What will I pay an agent each year?

$99 to $149 a year with the services we recommend, which works out to $297 to $447 over three years.

Your choice of agent does not change any state fee.

What does an agent do for the LLC?

The agent signs for lawsuits and state mail addressed to the LLC, using a street address in Missouri.

A good agent tells you quickly when something arrives, which is worth asking about before you sign up. Service of process, explained

What does the LLC owe the state each year?

No report comes due.

Why is the list in this order?

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.

Pick MO Registered Agent.org over Mainstay Filing and keep $150 across three years.

How we choose

Missouri agent rules, with sources

QuestionThe answerLook it up
LLC filing fee$50sos.mo.gov, read in October 2026 for this answer
Registered agentYes, the law says sorevisor.mo.gov, read in October 2026 for this answer
State fees, years one to three$50The rows above, added up
Every line above points to the state's own page. The total under them is ours, and it covers the filing, two reports and any minimum tax, nothing that varies by newspaper or county.

Still wondering?

Can I be my own agent?

Often you can. If your address and status match what the state demands, nothing stands in the way.

What address does an agent need?

The address has to be a physical street address in Missouri. A P.O. box can be listed only together with a street address.

What do the picks cost over three years?

MO Registered Agent.org comes to $297; Mainstay Filing comes to $447; Missouri Registered Agent.co comes to $297

Where do these numbers come from?

Official Missouri sources back the state side, and posted company prices back the service side.

Does the law require a service?

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

Which one do you recommend in Missouri?

MO Registered Agent.org comes first: the service is $99 annually and puts a street address on file. Next are Mainstay Filing and Missouri Registered Agent.co.

Sources for this answer

  1. Ask-about note for RSMo 347.037: the state publishes it at revisor.mo.gov, confirmed August 2026, so you can look it up yourself
  2. Ask-about note for Missouri formation fee: Filing fee: the state publishes it at sos.mo.gov, confirmed October 2026, so you can look it up yourself
  3. Ask-about note for Missouri registered agent statute: the state publishes it at revisor.mo.gov, confirmed October 2026, so you can look it up yourself
  4. MO Registered Agent.org pricing page, read November 13, 2026
  5. Mainstay Filing Missouri service page, read November 13, 2026
  6. Missouri Registered Agent.co pricing page, read November 13, 2026