Foreign registration ratings · Missouri
3 Best Foreign Registration Services in Missouri (2026)
1. Mainstay Filing: best for companies registered in more than one state
Service fee $199, with $304 due at checkout including the state fee; agent $149 a year after that
Mainstay Filing is rated first: $199 plus state fees in any state, first-year registered agent service included.
The agent line is $149 a year from year two, identical across states, after a free first year.
On three-year sums Mainstay is $100 above MO Registered Agent.org; the wider coverage justifies that gap in the rating.
What you get
- The registration, prepared and filed for you
- A free first year of registered agent service
- Free scan-and-upload of papers served, the day they arrive
Pros
- Same-business-day scans of service of process, no fee
- Registered agent, no charge in year one
- $199 service fee, state fee separate
- The same amount in all fifty states
Trade-offs
- Agent renewal of $149 is $50 over MO Registered Agent.org
2. MO Registered Agent.org: best for adding Missouri and nothing else
$199 plus the state fee, then the agent at $99 a year after year one
MO Registered Agent.org is rated second: $199 plus the state fee, year-one registered agent service included, then $99 a year for the agent.
The plan lists an in-state street address as the registered office and scans papers served there into your account.
What you get
- The registration filing
- The first year as your registered agent
Pros
- Then $99 yearly for the agent
- $199 to register, state fee on top
- A year of registered agent service is in the price
Trade-offs
- Missouri only; your home state needs its own agent
- EIN application billed at $99
3. Missouri Registered Agent.co: best for Missouri registrations only
$199 for the service, plus state fees, then $99 a year for the agent
Missouri Registered Agent.co is rated third: $199 plus the state fee, year-one registered agent service included, then $99 a year for the agent.
The plan lists an in-state street address as the registered office and scans papers served there into your account.
Missouri Registered Agent.co copies MO Registered Agent.org on amounts and plan features, so there is little between them.
What you get
- The registration filing
- First-year registered agent service
Pros
- Includes year one as your registered agent
- Registration line of $199, plus the state's fee
- Year-two agent amount: $99
Trade-offs
- Missouri only; your home state needs its own agent
- EIN application billed at $99
The 3 ratings summarized
| Line | Service | Rating | Service fee | Year two | Best for | Open |
|---|---|---|---|---|---|---|
| 1 | Mainstay Filing | 9.4 | $199 | $149/yr | Companies that register in several states | Visit Mainstay FilingPartner link. We may earn money if you buy. |
| 2 | MO Registered Agent.org | 9.1 | $199 | $99/yr | The lowest agent renewal we rank here | Visit MO Registered Agent.orgPartner link. We may earn money if you buy. |
| 3 | Missouri Registered Agent.co | 9.0 | $199 | $99/yr | The lowest agent renewal we rank here | Visit Missouri Registered Agent.coPartner link. We may earn money if you buy. |
Missouri foreign registration service amounts for 2026: year one, renewal and three-year sum
| Service | Year one | Year two | Year three | Three-year sum | Agent paid for year one |
|---|---|---|---|---|---|
| Mainstay Filing | $199 | $149 | $149 | $497 | Free |
| MO Registered Agent.org | $199 | $99 | $99 | $397 | Included |
| Missouri Registered Agent.co | $199 | $99 | $99 | $397 | Included |
Why the order looks like this
The rating method counts cost over years one to three and inclusions per price at 27% each and splits 46% among renewal price and terms, fit with state rules and price clarity. For Missouri, inclusions per price was the deciding line.
A foreign registration involves two states, and one provider with one amount in both rated highest on coverage, ahead of MO Registered Agent.org.
Each criterion and its weight is listed on How we rank.
Missouri foreign LLC registration: amount, form and office
A company from another state registers by lodging the Application for Registration of a Foreign Limited Liability Company (Form LLC 4) with the Missouri Secretary of State, Corporations Division; the state amount is $105. Missouri also needs certificate of good standing/existence from the home state, issued inside 60 days of the filing.
Missouri sets no yearly report for foreign LLCs.
Have these ready
- Certificate of good standing/existence from the home state, issued within 60 days before the filing.
- Home-state legal name, spelled exactly, and the formation date.
- An in-state registered agent; every service rated here can fill the role.
- $105 to the state, paid with the filing.
What skipping Missouri registration costs
An unregistered outside LLC may not sue in Missouri courts until it registers (RSMo 347.163.1). Contracts it signs remain valid (RSMo 347.163.2).
Missouri foreign registration service: your questions
Is registration compulsory for an outside LLC doing business in Missouri?
Yes, once it does business there. An unregistered company cannot bring suit in the state's courts.
What are the costs of foreign registration in Missouri?
$105 to the state plus $199 to the service.
What form does Missouri use to register a foreign LLC?
the Missouri Secretary of State, Corporations Division handles it; the form's exact title is on the facts line above.
Must the filing include a home-state certificate for Missouri?
Yes: certificate of good standing/existence from the home state, with an issue date within 60 days.
Must a registered agent stay on file after registering?
Yes. A registered agent with a street address in the state stays on record.
Which foreign registration service holds the top rating in Missouri?
Mainstay Filing, as $199 on top of the state's fee, with year one as registered agent free and the same amount in every state.
Source lines
- RSMo 347.037 (ledger date August 2026)
- Missouri formation fee: Filing fee, official source (ledger date October 2026)
- Missouri registered agent statute (ledger date October 2026)
- Missouri Secretary of State, Corporations (ledger date October 2026)
- Form LLC 4, foreign LLC registration (ledger date October 2026)
- RSMo 347.153, registration of foreign LLCs (ledger date October 2026)
- RSMo 347.163, transacting business and penalties (ledger date October 2026)
- Missouri Department of Revenue, business registration (ledger date October 2026)
- Mainstay Filing, Missouri service page: amounts read November 12, 2026
- MO Registered Agent.org, pricing and service pages: amounts read November 12, 2026
- Missouri Registered Agent.co, pricing and service pages: amounts read November 12, 2026