Learn the basics · Missouri
3 Best LLC Services in Missouri (2026), Compared
The gist
- What the state charges to file
- $50, charged once
- What recurs
- No report required
- Registered agent
- Mandatory
- Where we would start
- Mainstay Filing, MO Registered Agent.org then Missouri Registered Agent.co
The Missouri shortlist
The order comes from our method: three-year cost first, then how much work the price covers.1. Mainstay Filing: best for knowing your yearly cost
Annual price $199, renewal price $199, state fee extra
Mainstay Filing comes out on top: $199 a year buys the filing along with a full year of registered agent service.
Over three years this is $200 more than MO Registered Agent.org, a difference that reach across states justifies.
Includes
- Formation, filed by Mainstay
- Registered agent for the whole year
- The EIN application
- Official fees at cost
Points in its favor
- One yearly price: $199
- Renewal is $199
- No extra fee for the EIN application
Where it falls short
- Renews $100 higher than MO Registered Agent.org
- Missouri has no report for it to file
2. MO Registered Agent.org: best for staying in one state
Year one costs $199; later years cost $99
Number 2 on the list is MO Registered Agent.org, where forming costs $199, and the agent renews each year at $99.
Includes
- The LLC, filed for you
- No agent charge in year one
Points in its favor
- $99 a year afterward
- Includes a first year of agent service
- $199 to get started
Where it falls short
- Charges $99 to apply for the EIN
3. Missouri Registered Agent.co: best for one-state companies
Year one costs $199; later years cost $99
Number 3 on the list is Missouri Registered Agent.co, where forming costs $199, and the agent renews each year at $99.
It charges exactly what MO Registered Agent.org charges; either would serve you well.
Includes
- The LLC, filed for you
- No agent charge in year one
Points in its favor
- Includes a first year of agent service
- $199 to get started
- $99 a year afterward
Where it falls short
- Charges $99 to apply for the EIN
Numbers side by side
| # | Provider | Opening price | Renewal price | Total, 3 years | Included in the price | |
|---|---|---|---|---|---|---|
| 1 | Mainstay Filing | $199 | $199/yr | $597 | Formation, filed by Mainstay; registered agent for the whole year; The EIN application | Open Mainstay FilingPartner link. We may earn money if you buy. |
| 2 | MO Registered Agent.org | $199 | $99/yr | $397 | The LLC, filed for you; no agent charge in year one | Open MO Registered Agent.orgPartner link. We may earn money if you buy. |
| 3 | Missouri Registered Agent.co | $199 | $99/yr | $397 | The LLC, filed for you; no agent charge in year one | Open Missouri Registered Agent.coPartner link. We may earn money if you buy. |
Explanations
How much does it cost to start an LLC here?
The state charges $50. A service adds $199 in the first year.
By the end of year three the state will have taken $50. (sos.mo.gov, October 2026)
What creates the LLC?
The Missouri Secretary of State receives the Articles of Organization (Form LLC-1), and that is what creates the LLC.
(sos.mo.gov, October 2026)
Am I required to name a registered agent?
Every LLC must name a registered agent with an in-state street address.
A Missouri resident, or a corporation authorized in Missouri, whose business office is the registered office.
(revisor.mo.gov, October 2026)
What do I owe after the LLC is formed?
There is no report to file and no report fee.
Can I skip the service?
You can. Without a service, you pay the state alone: $50 across three years.
The $397 to $597 a service charges across three years buys the paperwork and the agent role.
Why is the first pick first?
How much work the price handles counts for 28%, and Mainstay Filing comes out ahead on it.
Five criteria set the order: what three years cost (34%), how much work the price handles (28%), prices spelled out (16%), renewal terms (12%) and reach beyond one state (10%).
It still comes first on how much the price covers, though by a narrower margin than in states with a yearly report.
Official Missouri requirements
| Item | Detail | Official source |
|---|---|---|
| State charge to form | $50 | (sos.mo.gov, October 2026) |
| Registered agent | Mandatory | (revisor.mo.gov, October 2026) |
| Three-year state total | $50 | Our total of the rows above |
More explanations
What about getting an EIN?
Applying for an EIN costs $99 with MO Registered Agent.org or $99 with Missouri Registered Agent.co, and nothing extra with Mainstay Filing.
What is the three-year price of each?
Mainstay Filing at $597, MO Registered Agent.org at $397, Missouri Registered Agent.co at $397 (service fees only).
Where do the numbers come from?
Missouri's official documents supply the state fees, and the companies' price pages supply the service fees.
Does the law require a service?
No law demands one. A service is a convenience.
Are there recurring state costs?
There is no report to file and no report fee.
Which LLC service do you recommend in Missouri?
Mainstay Filing is on top because formation and the registered agent arrive together for $199 a year, plus the EIN application; MO Registered Agent.org and Missouri Registered Agent.co follow.
Where the facts come from
- revisor.mo.gov: RSMo 347.037 (confirmed August 2026)
- sos.mo.gov: Missouri formation fee: Filing fee (confirmed October 2026)
- revisor.mo.gov: Missouri registered agent statute (confirmed October 2026)
- Mainstay Filing, Missouri service page, accessed November 13, 2026
- MO Registered Agent.org, pricing page, accessed November 13, 2026
- Missouri Registered Agent.co, pricing page, accessed November 13, 2026