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Biz Formation Report

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

Registered agents report · Missouri

3 Best Registered Agents in Missouri (2026)

By the Biz Formation Report editorial team

Biz Formation Report ranks registered agents in Missouri for 2026 as Missouri Registered Agent.co ($99 a year), Mainstay Filing ($149 a year) and MO Registered Agent.org ($99 a year), in that order. Missouri Registered Agent.co earns the top grade: $99 a year with no renewal increase, the lowest yearly price on this list.

No.1

Number one here

1. Missouri Registered Agent.co: best for the lowest annual price on this list

Score9.5out of 10
$99 a year, unchanged at renewal

Top grade, Missouri Registered Agent.co: a Missouri-focused agent at $99 a year, supplying an in-state street address for the registered office.

The company's registered office is an in-state street address supplied by Missouri Registered Agent.co; scans of served legal papers appear in your account.

Three years of service cost less here than with Mainstay Filing, and cost counts heavily in the grade.

What you get

  • A physical in-state address listed for the company
  • Served legal documents are scanned and made available online

Good

  • $99 annually with no renewal increase
  • Also forms LLCs and includes the first agent year
  • A lower yearly price than Mainstay Filing

Weak spots

  • Serves Missouri only; other states need a separate agent
Visit Missouri Registered Agent.coPartner link. We may earn money if you buy.
Read the Missouri Registered Agent.co review
No.2

One agent, every state

2. Mainstay Filing: best for all fifty states

Score9.2out of 10
$149 a year, unchanged at renewal

Second grade, Mainstay Filing: $149 per year for an agent that goes wherever the company goes, plus free scans of the first three government mailings each year.

Missouri Registered Agent.co is $150 cheaper across three years, and that difference lowers Mainstay Filing's cost grade.

What you get

  • An in-state street address as the registered office
  • Service of process scanned and uploaded within one business day, free
  • Three government mailings a year scanned free
  • Compliance reminders

Good

  • Served papers scanned within the same business day, free
  • Open to LLCs, corporations, LPs, LLPs and nonprofits
  • Three government mailings a year scanned at no cost
  • $149 a year, no renewal increase

Weak spots

  • The agent alone costs $50 a year more than Missouri Registered Agent.co
  • You file annual reports yourself on the agent plan
Visit Mainstay FilingPartner link. We may earn money if you buy.
Read the Mainstay Filing review
No.3

Missouri specialist

3. MO Registered Agent.org: best for companies based in Missouri

Score9.0out of 10
$99 a year, unchanged at renewal

Third grade, MO Registered Agent.org: a Missouri-focused agent at $99 a year, supplying an in-state street address for the registered office.

MO Registered Agent.org provides the registered office as an in-state street address, and legal papers served there are scanned and posted to your account.

MO Registered Agent.org matches Missouri Registered Agent.co on price and plan features, leaving very little between them.

What you get

  • An in-state street address as the registered office
  • Served legal documents are scanned and made available online

Good

  • $99 a year, unchanged at renewal
  • Includes the first agent year when it forms your LLC
  • A lower yearly price than Mainstay Filing

Weak spots

  • Serves Missouri only; other states need a separate agent
Visit MO Registered Agent.orgPartner link. We may earn money if you buy.
Read the MO Registered Agent.org review

Summary of the 3 grades

RankProviderGradePrice per yearRenewal priceBest fitSite
1Missouri Registered Agent.co9.5$99$99/yrThe lowest yearly price we rank hereVisit Missouri Registered Agent.coPartner link. We may earn money if you buy.
2Mainstay Filing9.2$149$149/yrOne agent across fifty statesVisit Mainstay FilingPartner link. We may earn money if you buy.
3MO Registered Agent.org9.0$99$99/yrThe lowest yearly price we rank hereVisit MO Registered Agent.orgPartner link. We may earn money if you buy.

Our editors set each grade out of 10 from the weighted criteria on How we rank. Customers do not rate anything here.

Missouri registered agent prices, 2026: year one, renewal and three-year outlay

ProviderYear 1Year 2Year 3Three-year outlayRenewal at the same price
Missouri Registered Agent.co$99$99$99$297Yes
Mainstay Filing$149$149$149$447Yes
MO Registered Agent.org$99$99$99$297Yes

All prices were taken from the companies' own websites on November 12, 2026. Missouri's own fees are the same whichever agent is named.

How the grades were set

Three-year bill was the deciding factor in Missouri. The method gives three-year bill and what the money buys 32% each and splits 36% across renewal handling, local rules match and pricing openness.

Total outlay with Missouri Registered Agent.co over three years: $297, $150 less than Mainstay Filing. An agent needed only in Missouri gains little from fifty-state coverage, so the lower yearly price decided the grade.

Every criterion and weight is listed on How we rank.

Missouri registered agent rules according to 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. Authority: RSMo 347.030.

Missouri and the yearly report

No yearly LLC report is required in Missouri. The continuing duty is to keep a registered agent on record, and the state's notices go to that agent.

Missouri registered agent: common questions

Does a Missouri LLC have to maintain a registered agent?

Yes. The state expects every LLC to keep a registered agent on record, and Missouri requires that agent to have a street address inside its borders.

How much do Missouri registered agents charge per year?

Annual charges run from $99 to $149, and prices are unchanged at renewal.

Can the owner be the company's own registered agent?

Yes, provided you meet the state's requirements. A Missouri resident, or a corporation authorized in Missouri, whose business office is the registered office.

Which registered agents does this report rank?

Missouri Registered Agent.co ($99 a year), Mainstay Filing ($149 a year) and MO Registered Agent.org ($99 a year), in descending order of grade.

What is a registered agent responsible for?

The registered agent accepts lawsuits, subpoenas and official state notices on the company's behalf and passes them on. Each plan in this report scans what arrives and sends it to your online account.

What is the best-value registered agent in Missouri?

Missouri Registered Agent.co: $99 a year flat, with online scans of any legal papers served.

Read next

Source notes

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