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LLC Straight Talk What it costs, what you have to file, who's worth paying.

Straight talk · Missouri

3 Best Registered Agents in Missouri (2026), No Fluff

If you need registered agents in Missouri in 2026, here's the order we'd go in: MO Registered Agent.org ($99 a year), Missouri Registered Agent.co ($99 a year) and Mainstay Filing ($149 a year). Prices start at $99 to $149 for the first year and reach $297 to $447 by year three.
Straight from the LLC Straight Talk editorial team

The short of it

The short of it
Do you have to?
Yes, it's the law
Statute's word
Registered agent
Going rate
$99 to $149 per year
Our pick
MO Registered Agent.org, Missouri Registered Agent.co then Mainstay Filing

Who we'd use in Missouri

Wondering why this order? We explain it here.

#1 Who we'd call first

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

$99 a year, then $99

MO Registered Agent.org is who we'd use first in Missouri, because $99 a year, then $99, is a fair deal for an LLC that stays in Missouri.

Its three-year total's under Mainstay Filing's, which makes it the first pick for a company that stays put.

What you get

  • A local address on file
  • Scans of legal papers

Pluses

  • Under Mainstay Filing on yearly price
  • Annual price $99, renewal price $99

What's not

  • No coverage outside the state
See MO Registered Agent.org Partner link. We may earn money if you buy.
#2 Missouri specialist

2. Missouri Registered Agent.co: best for keeping things local

$99 a year, then $99

Missouri Registered Agent.co comes in second because $99 a year, then $99, is a fair deal for an LLC that stays in Missouri.

Price for price, it's a tie with MO Registered Agent.org.

What you get

  • A local address on file
  • Scans of legal papers

Pluses

  • Annual price $99, renewal price $99
  • Under Mainstay Filing on yearly price

What's not

  • No coverage outside the state
See Missouri Registered Agent.co Partner link. We may earn money if you buy.
#3 Works in all 50 states

3. Mainstay Filing: best for an LLC that might grow

$149 a year, then $149

Mainstay Filing comes in third because the price doesn't change by state, $149 a year, and renewal is $149.

MO Registered Agent.org is $150 less over three years, and that's enough to decide the order.

What you get

  • A real address in the state, on file
  • Three government letters a year scanned at no cost
  • Not only for LLCs: corporations, LPs, LLPs and nonprofits too

Pluses

  • One account works in any state
  • Just $149 a year

What's not

  • $50 a year more than MO Registered Agent.org
  • Report filing needs the formation package
See Mainstay Filing Partner link. We may earn money if you buy.

Side by side

#CompanyFirst yearEach year after3 yearsCovers
1 MO Registered Agent.org $99$99/yr$297A local address on file; scans of legal papers See MO Registered Agent.org Partner link. We may earn money if you buy.
2 Missouri Registered Agent.co $99$99/yr$297A local address on file; scans of legal papers See Missouri Registered Agent.co Partner link. We may earn money if you buy.
3 Mainstay Filing $149$149/yr$447A real address in the state, on file; three government letters a year scanned at no cost; Not only for LLCs: corporations, LPs, LLPs and nonprofits too See Mainstay Filing Partner link. We may earn money if you buy.

Service fees only, from each company's prices on November 13, 2026. State fees are the same whoever you pick.

The questions that matter

Do I have to name a registered agent?

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

The law: RSMo 347.030. go check revisor.mo.gov, last confirmed October 2026

Who can be the agent?

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

A qualifying owner can serve for free.

What's the going rate for an agent?

Agent prices on this page start at $99 to $149 a year, and three years of service come to $297 to $447.

Naming a different agent won't change any state fee.

What does an agent actually do?

It takes delivery of lawsuits and official state mail for the LLC at an address in Missouri.

Ask how fast the agent tells you when something shows up, so you don't blow a deadline. Service of process, decoded

What else does the state bill every year?

No report comes due.

Why this order?

On money out the door in three years (35% of the score), MO Registered Agent.org wins.

Two tests carry most of the weight: money out the door in three years (35%) and jobs the price actually covers (30%).

Do the math: MO Registered Agent.org is $297 for three years, and that's $150 less than Mainstay Filing.

How we judge

Missouri: the agent checklist

WhatThe rule or the numberCheck it
Fee to form $50go check sos.mo.gov, last confirmed October 2026
Registered agent Yes, it's the lawgo check revisor.mo.gov, last confirmed October 2026
State fees, years one to three $50The rows above, added up

The last row is our math, not the state's: filing fee, plus the reports in years two and three, plus any minimum tax. If a cost has no fixed amount, like a newspaper notice, it's explained above and left out.

Still wondering?

Can I be my own agent?

Usually. If you fit the state's rule on who qualifies and which address counts, go ahead.

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?

Over three years you're looking at $297 at MO Registered Agent.org, $297 at Missouri Registered Agent.co, $447 at Mainstay Filing

Are the fees official?

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

Is a service required?

Not required. The state takes filings from owners.

Who should I use for a registered agent in Missouri?

MO Registered Agent.org is first: you get an agent in the state for $99 a year. Then comes Missouri Registered Agent.co and Mainstay Filing.

What's next

Sources, so you can check

  1. Where RSMo 347.037 comes from: revisor.mo.gov, confirmed August 2026, and you can go look yourself
  2. Where Missouri formation fee: Filing fee comes from: sos.mo.gov, confirmed October 2026, and you can go look yourself
  3. Where Missouri registered agent statute comes from: revisor.mo.gov, confirmed October 2026, and you can go look yourself
  4. MO Registered Agent.org pricing page, read November 13, 2026
  5. Missouri Registered Agent.co pricing page, read November 13, 2026
  6. Mainstay Filing Missouri service page, read November 13, 2026