Plain and short · Missouri
3 Best Registered Agents in Missouri (2026): Simply Ranked
The short version
- Must an LLC name one?
- Required: yes
- Title in law
- Registered agent
- Typical price
- $99 to $149 a year
- Ranked first
- Missouri Registered Agent.co, MO Registered Agent.org then Mainstay Filing
Missouri, ranked
Prices come from each company's own page. Method.1. Missouri Registered Agent.co: best for an LLC that stays put
Annual price $99, renewal price $99
First place: Missouri Registered Agent.co, since three years in Missouri cost $297 with this agent.
Three years cost less here than at Mainstay Filing, and cost weighs most.
Includes
- In-state address
- Legal papers scanned online
Good
- Costs less a year than Mainstay Filing
- $99 a year, flat at renewal
Against
- A second state needs a second agent
2. MO Registered Agent.org: best for another local option
Annual price $99, renewal price $99
Second place: MO Registered Agent.org, since three years in Missouri cost $297 with this agent.
Price for price, a tie with Missouri Registered Agent.co.
Includes
- In-state address
- Legal papers scanned online
Good
- $99 a year, flat at renewal
- Costs less a year than Mainstay Filing
Against
- A second state needs a second agent
3. Mainstay Filing: best for one price in every state
Annual price $149, renewal price $149
Mainstay Filing takes third place because a single yearly price, $149, follows the LLC across state lines.
It ranks lower because three years cost $150 more than Missouri Registered Agent.co, and cost has the largest weight.
Includes
- A street address in the state
- Three government mailings a year scanned free
- For LLCs, corporations, LPs, LLPs and nonprofits
Good
- One price in all fifty states
- $149 each year, no increase
Against
- The yearly bill is $50 higher
- Agent only. No report filing
Prices
| # | Name | Year one | Renewal | Three years | Covers | |
|---|---|---|---|---|---|---|
| 1 | Missouri Registered Agent.co | $99 | $99/yr | $297 | In-state address; legal papers scanned online | View Missouri Registered Agent.coPartner link. We may earn money if you buy. |
| 2 | MO Registered Agent.org | $99 | $99/yr | $297 | In-state address; legal papers scanned online | View MO Registered Agent.orgPartner link. We may earn money if you buy. |
| 3 | Mainstay Filing | $149 | $149/yr | $447 | A street address in the state; three government mailings a year scanned free; For LLCs, corporations, LPs, LLPs and nonprofits | View Mainstay FilingPartner link. We may earn money if you buy. |
Key questions
Is a registered agent required?
Every LLC must name a registered agent with an in-state street address.
Law: RSMo 347.030. from revisor.mo.gov, October 2026, kept short
Who may be the agent?
A Missouri resident, or a corporation authorized in Missouri, whose business office is the registered office.
If you qualify, you can be your own agent at no cost.
How much per year?
$99 to $149 a year, or $297 to $447 for three.
Whichever agent you name, the state's fees stay the same.
Why does the state want one?
It is the LLC's contact in Missouri for court papers and state letters.
If papers arrive and nobody accepts them, a case can proceed without the LLC. What is service of process?
What else is due each year?
No report falls due.
Why this order?
Missouri Registered Agent.co scores best on three-year cost, which is 38% of the score.
Two checks carry most of the weight: three-year cost (38%) and work included (27%).
Mainstay Filing runs $150 higher over three years than Missouri Registered Agent.co's $297.
What Missouri requires of an agent
| Item | Detail | Source |
|---|---|---|
| LLC filing fee | $50 | from sos.mo.gov, October 2026, kept short |
| Registered agent | Required: yes | from revisor.mo.gov, October 2026, kept short |
| Three-year state total | $50 | The rows above, added |
Questions
Can I be my own agent?
Yes, if you meet the state's rules on who may serve and on the address.
What address does an 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.
What do the picks cost over three years?
Missouri Registered Agent.co is $297, while MO Registered Agent.org is $297, while Mainstay Filing is $447
Where do the figures come from?
Official Missouri sources for the state side. Published prices for the service side.
Must I use a service?
No law requires a service. It is a paid convenience.
What is the best registered agent in Missouri?
Missouri Registered Agent.co ranks first. An LLC that stays in Missouri pays $99 a year and $99 on renewal. After it, MO Registered Agent.org and Mainstay Filing.
Sources
- Entry for RSMo 347.037: read at revisor.mo.gov, dated August 2026, kept short on purpose
- Entry for Missouri formation fee: Filing fee: read at sos.mo.gov, dated October 2026, kept short on purpose
- Entry for Missouri registered agent statute: read at revisor.mo.gov, dated October 2026, kept short on purpose
- Missouri Registered Agent.co pricing page, read November 13, 2026
- MO Registered Agent.org pricing page, read November 13, 2026
- Mainstay Filing Missouri service page, read November 13, 2026