The explanation · Missouri
3 Best Registered Agents in Missouri (2026), Compared
Quick explanation
- Must you have one?
- Required
- Title used by the law
- Registered agent
- Typical service price
- $99 to $149 every year
- Our picks in order
- Mainstay Filing, MO Registered Agent.org then Missouri Registered Agent.co
Services we would pick in Missouri
Prices come from each company's own pricing page. The ranking is explained on how we pick.1. Mainstay Filing: best for one price in any state
Yearly cost $149, renewing for $149
The reason Mainstay Filing leads here is that $149 a year covers an agent in this state and in any state you add.
Over three years this is $150 more than MO Registered Agent.org, a difference that reach across states justifies.
Includes
- A physical address in the state
- Up to three government mailings a year scanned for free
- Works for LLCs, corporations, LPs, LLPs and nonprofits
Points in its favor
- A fixed $149 each year
- Follows the company across states
Where it falls short
- $50 a year above the local pick
- Reports are not part of the agent plan
2. MO Registered Agent.org: best for one-state companies
Yearly cost $99, renewing for $99
Our second recommendation, MO Registered Agent.org, earns it since it charges $99 a year, renewing at $99, for an LLC that remains in Missouri.
Includes
- A physical address in the state
- Legal papers scanned to your account
Points in its favor
- $99 a year, with no change at renewal
- Costs less each year than Mainstay Filing
Where it falls short
- Moving to a second state means a second agent
3. Missouri Registered Agent.co: best for local support
Yearly cost $99, renewing for $99
Our third recommendation, Missouri Registered Agent.co, earns it since it charges $99 a year, renewing at $99, for an LLC that remains in Missouri.
It charges exactly what MO Registered Agent.org charges; either would serve you well.
Includes
- A physical address in the state
- Legal papers scanned to your account
Points in its favor
- $99 a year, with no change at renewal
- Costs less each year than Mainstay Filing
Where it falls short
- Moving to a second state means a second agent
Compare prices
| # | Provider | First-year price | Renewal price | Total, 3 years | Included in the price | |
|---|---|---|---|---|---|---|
| 1 | Mainstay Filing | $149 | $149/yr | $447 | A physical address in the state; up to three government mailings a year scanned for free; Works for LLCs, corporations, LPs, LLPs and nonprofits | See Mainstay FilingPartner link. We may earn money if you buy. |
| 2 | MO Registered Agent.org | $99 | $99/yr | $297 | A physical address in the state; legal papers scanned to your account | See MO Registered Agent.orgPartner link. We may earn money if you buy. |
| 3 | Missouri Registered Agent.co | $99 | $99/yr | $297 | A physical address in the state; legal papers scanned to your account | See Missouri Registered Agent.coPartner link. We may earn money if you buy. |
The questions, one by one
Does the law insist on a registered agent?
Every LLC must name a registered agent with an in-state street address.
Statute: RSMo 347.030. see revisor.mo.gov, October 2026
Who can serve in the role?
A Missouri resident, or a corporation authorized in Missouri, whose business office is the registered office.
An owner who qualifies can serve without paying anyone.
How much does an agent charge?
Prices start at $99 to $149 a year and total $297 to $447 for three.
The state fees are the same whoever you name.
What does an agent do for the LLC?
It takes delivery of legal papers and state notices for the company in Missouri.
A service is only as useful as its forwarding, so ask how documents reach you. Learn about service of process
What recurs apart from the agent?
No report is due.
Why is the order what it is?
The deciding factor is how much work the price handles (28% of the weight), where Mainstay Filing is strongest.
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%).
MO Registered Agent.org is the smaller bill but serves Missouri alone.
Checklist for Missouri, with sources
| Requirement | What the state says | Reference |
|---|---|---|
| Cost of filing | $50 | see sos.mo.gov, October 2026 |
| Registered agent | Required | see revisor.mo.gov, October 2026 |
| Three-year state total | $50 | Computed from the lines above |
FAQ
Can an owner act as the agent?
You may, once you meet the state's rules on who can serve and where.
What kind of address does the agent need?
The address has to be a physical street address in Missouri. A P.O. box can be listed only together with a street address.
How do the picks compare over three years?
Mainstay Filing comes to $447; MO Registered Agent.org comes to $297; Missouri Registered Agent.co comes to $297
Are the figures official?
State fees come from Missouri's official sources, cited by each figure. Service prices come from each company's own pricing page.
Is hiring anyone mandatory?
It is optional, and the state charges the same either way.
Which one should I choose in Missouri?
Mainstay Filing, because $149 a year is its price in this state, and it does not change anywhere else. Then MO Registered Agent.org and Missouri Registered Agent.co.
Documents and pricing pages behind 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
- 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