No.1
Number one here
1. MO Registered Agent.org: best for companies that only add Missouri
Service charge $199, with the state fee separate; the agent costs $99 a year from the second year
Score9.6out of 10
First place: MO Registered Agent.org. $199 over the state fee registers the company in Missouri, and the agent renews at $99.
An in-state street address serves as the registered office, and papers served on the company are scanned into your online account.
Over three years it costs less than Mainstay Filing, and cost is one of our two most heavily weighted criteria.
In the price
- The registration filing
- The first year of registered agent service
Why pick it
- Twelve months as your registered agent come with it
- The agent renews at $99 annually
- Registration at $199, with the state fee extra
Weak spots
- Serves Missouri only; the home state needs its own agent
- The EIN application carries a separate fee ($99)
No.2
Best value here
2. Missouri Registered Agent.co: best for Missouri registrations only
$199 for the service, state fee on top; from year two the agent bills $99 annually
Score9.4out of 10
Second place: Missouri Registered Agent.co. $199 over the state fee registers the company in Missouri, and the agent renews at $99.
An in-state street address serves as the registered office, and papers served on the company are scanned into your online account.
Missouri Registered Agent.co mirrors MO Registered Agent.org on price and features, so the pair is nearly level.
In the price
- The registration filing
- The first year of registered agent service
Why pick it
- Afterward, $99 a year keeps the agent
- $199 to register, state fee on top
- Covers the first year of registered agent service
Weak spots
- Serves Missouri only; the home state needs its own agent
- The EIN application carries a separate fee ($99)
No.3
Same price in every state
3. Mainstay Filing: best for businesses active in several states
$199 for the registration work and the state's fee besides, $304 payable at checkout; the agent is $149 yearly after year one
Score9.2out of 10
Third place: Mainstay Filing. $199 is added to the state fee in any state, and the first year as registered agent is included.
The first agent year costs nothing; later years are $149 each, in this state or any other.
MO Registered Agent.org costs $100 less over three years, and Mainstay Filing trails it on that criterion.
In the price
- The foreign registration, filed for you
- A free first year as your registered agent
- Free same-business-day scans of anything served on the company
Why pick it
- Service of process on the company scanned within the same business day, no charge
- A $199 service charge, with the state's fee added
- One price in each of the fifty states
- Year-one registered agent service costs nothing
Weak spots
- The agent is $149 a year after year one, $50 more than MO Registered Agent.org
The 3 rulings in brief
| Rank | Provider | Ruling score | Service charge | Year two | Suited to | Link |
|---|
| 1 | MO Registered Agent.org | 9.6 | $199 | $99/yr | The lowest agent renewal on this list | Visit MO Registered Agent.orgPartner link. We may earn money if you buy. |
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| 2 | Missouri Registered Agent.co | 9.4 | $199 | $99/yr | The lowest agent renewal on this list | Visit Missouri Registered Agent.coPartner link. We may earn money if you buy. |
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| 3 | Mainstay Filing | 9.2 | $199 | $149/yr | Businesses spread over several states | Visit Mainstay FilingPartner link. We may earn money if you buy. |
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The Startup Judge assigns each score out of 10 itself, applying the criteria on
How we rank; no customer ratings are used.
Missouri foreign registration service charges in 2026: year one, renewals and the three-year total
| Provider | Year one | Year two | Year three | Total over three years | Agent covered in year one |
|---|
| MO Registered Agent.org | $199 | $99 | $99 | $397 | Included |
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| Missouri Registered Agent.co | $199 | $99 | $99 | $397 | Included |
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| Mainstay Filing | $199 | $149 | $149 | $497 | Free |
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Each charge was taken from the provider's own pages on November 12, 2026. Missouri's $105 registration fee is payable in addition to every row below and is not in the totals.
What decided the order
The Startup Judge weighs charge over three years at 31% and work taken off the founder at 31%; renewal conduct, fit with local rules and pricing in plain sight divide the remaining 38%. In Missouri, charge over three years was the criterion that tipped it.
Over three years MO Registered Agent.org totals $397, $100 less than Mainstay Filing. Both providers include the first year, so the renewal charge carried the ruling.
Each criterion and its weight appear on How we rank.
Foreign LLC registration in Missouri: the form, the office and the fee
Registration is lodged with the Missouri Secretary of State, Corporations Division using the Application for Registration of a Foreign Limited Liability Company (Form LLC 4). The state fee is $105. Missouri also requires certificate of good standing/existence from the home state, issued no more than 60 days before the filing.
Missouri imposes no yearly report on foreign LLCs.
Items to gather before filing
- Certificate of good standing/existence from the home state, no older than 60 days at filing.
- The exact legal name registered in the home state, along with the date it was formed.
- A registered agent whose street address is in the state. Any provider on this page can fill the role.
- The $105 state fee, remitted with the application.
Consequences of operating in Missouri unregistered
Until it registers, an out-of-state LLC may not sue in Missouri courts (RSMo 347.163.1). The contracts it makes stay enforceable (RSMo 347.163.2).
Questions on Missouri foreign registration services
Is an out-of-state LLC required to register in Missouri?
Yes, as soon as it conducts business there. Until it registers, it has no standing to sue in that state's courts.
What will foreign registration in Missouri run in total?
The state fee is $105; service charges run $199.
What does Missouri call its foreign registration form?
The Application for Registration of a Foreign Limited Liability Company (Form LLC 4), lodged with the Missouri Secretary of State, Corporations Division.
Must the home state vouch for the company before Missouri accepts it?
It must. Certificate of good standing/existence from the home state, issued no more than 60 days before filing accompanies the application.
Is a registered agent still needed after the company is registered?
Yes. A registered agent with a street address in the state stays on file for as long as the registration lasts.
Which foreign registration service does the record favor in Missouri?
MO Registered Agent.org, since it charges $199 beyond the state fee, including year-one registered agent service, then $99 a year for the agent.
The record
- RSMo 347.037, on the record as of August 2026
- Missouri formation fee: Filing fee, official source, on the record as of October 2026
- Missouri registered agent statute, on the record as of October 2026
- Missouri Secretary of State, Corporations, on the record as of October 2026
- Form LLC 4, foreign LLC registration, on the record as of October 2026
- RSMo 347.153, registration of foreign LLCs, on the record as of October 2026
- RSMo 347.163, transacting business and penalties, on the record as of October 2026
- Missouri Department of Revenue, business registration, on the record as of October 2026
- Exhibit: MO Registered Agent.org, pricing and service pages, November 12, 2026
- Exhibit: Missouri Registered Agent.co, pricing and service pages, November 12, 2026
- Exhibit: Mainstay Filing, Missouri service page, November 12, 2026