The explanation · Missouri
3 Best Foreign Registration Services in Missouri (2026), Compared
The gist
- Registration fee at the state
- $105
- Proof of existence?
- Yes, attach one (60 days or newer)
- After you register
- No follow-up report
- Our picks in order
- Missouri Registered Agent.co, MO Registered Agent.org then Mainstay Filing
Services we would pick in Missouri
Prices come from each company's own pricing page. The ranking is explained on how we pick.1. Missouri Registered Agent.co: best for a modest agent fee each year
Service fee $199 and $105 to the state; agent renewal $99
Missouri Registered Agent.co is where we would start in Missouri. In short, you pay $199 above the state fee, and $99 every year after.
A lower three-year total than Mainstay Filing gives it the lead for a company that stays put.
Includes
- The foreign filing, submitted
- Agent included for the first year
Points in its favor
- $99 a year for the agent afterward
- Registers for $199
- Year-one agent service is included
Where it falls short
- Your home state requires a second provider
2. MO Registered Agent.org: best for adding one more state
Service fee $199 and $105 to the state; agent renewal $99
MO Registered Agent.org takes the second slot: you pay $199 above the state fee, and $99 every year after.
It charges exactly what Missouri Registered Agent.co charges; either would serve you well.
Includes
- The foreign filing, submitted
- Agent included for the first year
Points in its favor
- $99 a year for the agent afterward
- Year-one agent service is included
- Registers for $199
Where it falls short
- Your home state requires a second provider
3. Mainstay Filing: best for adding several states
Service fee $199 and $105 to the state; agent renewal $149
Mainstay Filing takes the third slot: it charges $199 plus the state fee and includes the registered agent for the first year, then $149 a year.
Missouri Registered Agent.co is $100 less over three years, which is enough to place it higher.
The registered agent costs $149 annually from year two onward, in every state.
Includes
- The registration filing
- Registered agent, no charge in the first year
- Works in all fifty states
Points in its favor
- $199 plus Missouri's fee
- No agent fee in the first year
- One fee wherever you register
Where it falls short
- Agent renewal of $149 lands $50 over Missouri Registered Agent.co
How they stack up
| # | Provider | First-year price | Each year after | Total, 3 years | What you get | |
|---|---|---|---|---|---|---|
| 1 | Missouri Registered Agent.co | $199 | $99/yr | $397 | the foreign filing, submitted; agent included for the first year | Go to Missouri Registered Agent.coPartner link. We may earn money if you buy. |
| 2 | MO Registered Agent.org | $199 | $99/yr | $397 | the foreign filing, submitted; agent included for the first year | Go to MO Registered Agent.orgPartner link. We may earn money if you buy. |
| 3 | Mainstay Filing | $199 | $149/yr | $497 | the registration filing; registered agent, no charge in the first year; works in all fifty states | Go to Mainstay FilingPartner link. We may earn money if you buy. |
Key questions
At what point is registration required?
If an LLC formed in another state wants to do business in Missouri, it registers beforehand.
Not registering can lead to it is blocked from filing its own lawsuits (RSMo 347.163.1).
dor.mo.gov, confirmed October 2026
What will registering set me back?
The state charges $105, and a service adds $199.
State fees over three years, registration included: $105. sos.mo.gov, confirmed October 2026
What do I file, and where does it go?
Submit the Application for Registration of a Foreign Limited Liability Company (Form LLC 4) to the Missouri Secretary of State, Corporations Division.
Attach certificate of good standing/existence from the home state issued within the last 60 days.
Is there a recurring filing?
Foreign LLCs have no recurring report here.
What put number one on top?
Missouri Registered Agent.co leads on what three years cost, a criterion that carries 34% of the weight.
Most of the score, 62%, comes from what three years cost and how much work the price handles.
On cost, Missouri Registered Agent.co wins at $397, saving $100 compared with Mainstay Filing.
Missouri: rules and fees at a glance
| Item | Fee or rule | Reference |
|---|---|---|
| Cost to register | $105 | sos.mo.gov, confirmed October 2026 |
| Document from home state | Yes, attach one, 60 days | dor.mo.gov, confirmed October 2026 |
| Paid to the state in three years | $105 | Our total of the rows above |
Other things people ask
What about the state where I formed the LLC?
Yes, each state has its own requirement. A one-state service covers only the state it is in.
What is the three-year price of each?
Missouri Registered Agent.co comes to $397; MO Registered Agent.org comes to $397; Mainstay Filing comes to $497 in service fees alone.
How do you know these fees?
State fees come from Missouri's official sources, cited by each figure. Service prices come from each company's own pricing page.
Does the law require a service?
Not required. Services charge to do the paperwork for you.
Do the recommended companies file it?
Each of them does, and the state fee does not change.
What is the best foreign registration service for Missouri?
Missouri Registered Agent.co, because it charges $199 plus the state fee, with the agent included in year one, then $99 a year. Then MO Registered Agent.org and Mainstay Filing.
Sources used on this page
- August 2026 confirmation of RSMo 347.037 at revisor.mo.gov
- October 2026 confirmation of Missouri formation fee: Filing fee at sos.mo.gov
- October 2026 confirmation of Missouri registered agent statute at revisor.mo.gov
- October 2026 confirmation of Missouri Secretary of State, Corporations at sos.mo.gov
- October 2026 confirmation of Form LLC 4, foreign LLC at sos.mo.gov
- October 2026 confirmation of RSMo 347.153, registration of foreign at revisor.mo.gov
- October 2026 confirmation of RSMo 347.163, transacting business and at revisor.mo.gov
- October 2026 confirmation of Missouri Department of Revenue, business at dor.mo.gov
- Fetched November 13, 2026: the Missouri Registered Agent.co pricing page
- Fetched November 13, 2026: the MO Registered Agent.org pricing page
- Fetched November 13, 2026: the Mainstay Filing Missouri service page