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Quick answer · Missouri

3 Best Registered Agents in Missouri (2026) and the Facts Behind Them

Best registered agents in Missouri for 2026: Mainstay Filing ($149 a year), Missouri Registered Agent.co ($99 a year) and MO Registered Agent.org ($99 a year), ranked in that order. First year: $99 to $149. Three years: $297 to $447.

LLC Q and A editorial team ·

At a glance

Agent required?
Yes, by statute
Statute term
Registered agent
Typical price
$99 to $149 yearly
Pick
Mainstay Filing, Missouri Registered Agent.co then MO Registered Agent.org

Best in Missouri, in order

Order set by our five criteria, three-year cost first.
1#1 pick

1. Mainstay Filing: best for LLCs that may grow

Year one $149, later years $149

#1 in Missouri: Mainstay Filing, because it costs $149 a year here and the same in every other state.

Missouri Registered Agent.co saves $150 over three years if the LLC never leaves Missouri.

Price covers

  • Street address in the state
  • Free scans: three government mailings per year
  • Not limited to LLCs: corporations, LPs, LLPs and nonprofits as well

For

  • Same price in all fifty states
  • Annual price $149, renewal price $149

Against

  • Costs $50 more a year than the local pick
  • Agent only; no report filing
Open Mainstay FilingPartner link. We may earn money if you buy.
2Missouri specialist

2. Missouri Registered Agent.co: best for LLCs that stay put

Year one $99, later years $99

Missouri Registered Agent.co ranks second since $99 annually puts a street address on file.

Price covers

  • Local street address
  • Scans of legal papers

For

  • $99/yr, flat at renewal
  • Lower yearly bill than the national pick

Against

  • Missouri only
Open Missouri Registered Agent.coPartner link. We may earn money if you buy.
3Missouri specialist

3. MO Registered Agent.org: best for another local option

Year one $99, later years $99

MO Registered Agent.org ranks third since $99 annually puts a street address on file.

It charges exactly what Missouri Registered Agent.co charges.

Price covers

  • Local street address
  • Scans of legal papers

For

  • Lower yearly bill than the national pick
  • $99/yr, flat at renewal

Against

  • Missouri only
Open MO Registered Agent.orgPartner link. We may earn money if you buy.

Side by side

#CompanyYear 1Renewal3-year costCovers
1Mainstay Filing$149$149/yr$447street address in the state; Free scans: three government mailings per year; Not limited to LLCs: corporations, LPs, LLPs and nonprofits as wellOpen Mainstay FilingPartner link. We may earn money if you buy.
2Missouri Registered Agent.co$99$99/yr$297local street address; scans of legal papersOpen Missouri Registered Agent.coPartner link. We may earn money if you buy.
3MO Registered Agent.org$99$99/yr$297local street address; scans of legal papersOpen MO Registered Agent.orgPartner link. We may earn money if you buy.
Service fees only, from company price pages read November 13, 2026. State fees are identical for every pick.

Questions and replies

Must the LLC name a registered agent?

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

Law: RSMo 347.030. revisor.mo.gov (October 2026) is the source of record

Who can be the agent?

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

Meeting the rule makes the role free.

Agent price per year?

Recommended services charge $99 to $149 annually, $297 to $447 across three years.

State fees do not change with your choice of agent.

What does an agent do?

Receives legal papers and state notices for the company in Missouri.

Prompt forwarding matters more than anything else about an agent. Service of process, defined

Other yearly state charges?

No report comes due.

What decided #1?

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

Two criteria dominate: three-year price (36%) and chores removed from your list (26%).

A second state later? Same agent, same price; Missouri Registered Agent.co ends at the Missouri line.

Method

Missouri agent requirements

ItemRule or amountSource
LLC filing fee$50sos.mo.gov (October 2026) is the source of record
Registered agentYes, by statuterevisor.mo.gov (October 2026) is the source of record
Three-year state total$50Sum of the rows above
To verify the total: filing fee, two later reports, minimum tax if one applies. Costs without a set amount are excluded.

More replies

May an owner serve as agent?

Yes, when your address and status fit the rule. Many owners still hire a service for privacy.

Which addresses are accepted?

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?

Totals over three years: Mainstay Filing at $447, Missouri Registered Agent.co at $297, MO Registered Agent.org at $297

Are the fees official?

State fees come from Missouri's official documents. Service prices come from each company's price page. Both are dated here.

Is a service required?

No. Owners can file directly. A service saves time and can act as agent.

Best registered agent in Missouri?

Mainstay Filing: price: $149 a year in all states, $149 at renewal. Behind it: Missouri Registered Agent.co and MO Registered Agent.org.

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. Mainstay Filing Missouri service page, read November 13, 2026
  5. Missouri Registered Agent.co pricing page, read November 13, 2026
  6. MO Registered Agent.org pricing page, read November 13, 2026