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Filing Verdict

Rankings of registered agents, LLC formation and foreign registration services in all 50 states.

Registered agent verdict · Missouri

3 Best Registered Agents in Missouri (2026)

Filing Verdict's 2026 verdict on registered agents in Missouri: Mainstay Filing ($149 a year), Missouri Registered Agent.co ($99 a year) and MO Registered Agent.org ($99 a year), in that order. Mainstay Filing takes first place: one $149 agent plan that follows the company into every state, renewing at $149.
The Filing Verdict editorial team
Top pick on this page
Spot 1

1. Mainstay Filing: best for all fifty states

$149 per year, flat

9.5Editorial score
out of 10

Mainstay Filing wins here: $149 a year whether the company stays put or expands, and the first three government mailings each year are scanned free.

The three-year bill is $150 higher than Missouri Registered Agent.co's, and the wider coverage is worth that to us.

What you get

  • A street address in the state, on the public record
  • Free same-business-day scans of service of process
  • The first three government mailings each year scanned free
  • Compliance reminders

What we like

  • Same-business-day scans of served papers, free
  • $149 a year, unchanged at renewal
  • Serves LLCs, corporations, LPs, LLPs and nonprofits
  • Three government mailings a year scanned free

Cons

  • The agent alone runs $50 a year above Missouri Registered Agent.co
  • Report filing is a formation-package feature, not part of the agent plan
Visit Mainstay FilingPartner link. We may earn money if you buy. Our full Mainstay Filing verdict
Best value here
Spot 2

2. Missouri Registered Agent.co: best for the lowest yearly fee on this list

$99 per year, flat

9.2Editorial score
out of 10

Second place goes to Missouri Registered Agent.co: a Missouri specialist at $99 a year, with an in-state street address for the registered office.

With Missouri Registered Agent.co, the registered office address sits in the state, and anything served on the company is scanned and sent to you online.

What you get

  • An in-state street address on the public record
  • Scans of any served legal papers, available in your online account

What we like

  • $99 per year, renewing at the same price
  • LLC formation available, first agent year free
  • Beats Mainstay Filing on yearly price

Cons

  • Built for Missouri; other states need a separate agent
Visit Missouri Registered Agent.coPartner link. We may earn money if you buy. Our full Missouri Registered Agent.co verdict
Local Missouri agent
Spot 3

3. MO Registered Agent.org: best for Missouri specialists

$99 per year, flat

8.9Editorial score
out of 10

Third place goes to MO Registered Agent.org: a Missouri specialist at $99 a year, with an in-state street address for the registered office.

MO Registered Agent.org provides the in-state street address used as your registered office, and papers served on the company are scanned to your account.

MO Registered Agent.org copies Missouri Registered Agent.co on price and plan features, so the order between them is a close call.

What you get

  • A state street address listed as the registered office
  • Scans of any served legal papers, available in your online account

What we like

  • Beats Mainstay Filing on yearly price
  • Can form your LLC and include the first agent year
  • $99 a year, no change at renewal

Cons

  • Built for Missouri; other states need a separate agent
Visit MO Registered Agent.orgPartner link. We may earn money if you buy. Our full MO Registered Agent.org verdict

The 3 verdicts at a glance

No.ServiceVerdict scoreYearly priceRenewalBest forVisit
1Mainstay Filing9.5$149$149/yrAn agent that works in all fifty states Visit Mainstay FilingPartner link. We may earn money if you buy.
2Missouri Registered Agent.co9.2$99$99/yrThe lowest yearly price we rank here Visit Missouri Registered Agent.coPartner link. We may earn money if you buy.
3MO Registered Agent.org8.9$99$99/yrThe lowest yearly price we rank here Visit MO Registered Agent.orgPartner link. We may earn money if you buy.
Each mark out of 10 is our own judgment from the weighted criteria on How we rank. None of it comes from customer ratings.

Missouri registered agent prices for 2026: year one, renewals and three years

ServiceYear 1Year 2Year 3Total, 3 yearsRenewal price unchanged
Mainstay Filing$149$149$149$447Yes
Missouri Registered Agent.co$99$99$99$297Yes
MO Registered Agent.org$99$99$99$297Yes
Prices were read from each company's own pages on November 12, 2026. Missouri's fees do not depend on which agent you choose.

How the order was set

What settled Missouri: paperwork the price handles. The method puts 35% on total over three years, 35% on paperwork the price handles and spreads 30% across renewal behavior, match to the state and up-front pricing.

Mainstay's agent plan covers more: papers served on the company are scanned the same business day at no fee, one price applies in all fifty states and three government mailings a year are scanned free. Missouri Registered Agent.co costs less, and the two finish close.

The full list of criteria and weights is on How we rank.

Missouri registered agent requirements, from Missouri Secretary of State (official)

Every LLC must name a registered agent with an in-state street address. The address has to be a physical street address in Missouri. A P.O. box can be listed only together with a street address. Citation: RSMo 347.030.

Yearly filings after you name an agent in Missouri

Missouri asks for no yearly LLC report. The one standing duty is keeping a registered agent on file, and the state's notices go to that address.

Missouri registered agent: questions answered

Must a Missouri LLC have a registered agent?

Yes. Missouri requires every LLC to keep a registered agent on file, and the agent needs a street address in the state.

What do Missouri registered agents charge each year?

The prices run $99 to $149 a year, and every service keeps its price at renewal.

May I act as my own registered agent?

Only if you meet the state's conditions. A Missouri resident, or a corporation authorized in Missouri, whose business office is the registered office.

Which registered agents are ranked on this page?

Mainstay Filing ($149 a year), Missouri Registered Agent.co ($99 a year) and MO Registered Agent.org ($99 a year), from first place to last.

What is the registered agent's job?

The registered agent is the company's official address for lawsuits, subpoenas and state notices. It receives them and passes them on, and every plan on this page scans them to you online.

Which registered agent is the best value in Missouri?

Mainstay Filing, because $149 a year, unchanged at renewal, with papers served on the company scanned the same business day at no charge.

Keep reading

Sources and dates

  1. RSMo 347.037, confirmed August 2026
  2. Missouri formation fee: Filing fee, official source, confirmed October 2026
  3. Missouri registered agent statute, confirmed October 2026
  4. Checked November 12, 2026: Mainstay Filing, Missouri service page
  5. Checked November 12, 2026: Missouri Registered Agent.co, pricing and service pages
  6. Checked November 12, 2026: MO Registered Agent.org, pricing and service pages