Place1
Our top pick in MissouriMainstay Filing
1. Mainstay Filing: best for fifty-state coverage
$149 a year, same at renewal
Our mark9.1out of 10
Top of our list: Mainstay Filing, for one $149 agent price here and in every other state, renewing at $149.
It costs $150 more than Missouri Registered Agent.co across three years, which the wider coverage justifies on our method.
What you get
- A physical in-state address on the public record
- Service of process scanned the same business day, no fee
- First three government mailings a year scanned free
- Compliance reminders
Why pick it
- Flat $149 a year
- Works for LLCs, corporations, LPs, LLPs and nonprofits
- First three government mailings a year scanned free
- Service of process scanned the same business day, no fee
Less good
- $50 more per year than Missouri Registered Agent.co
- The agent-only plan does not file your annual report
Place2
Lower renewal than MainstayMissouri Registered Agent.co
2. Missouri Registered Agent.co: best for a Missouri-only company on a budget
$99 a year, same at renewal
Our mark8.9out of 10
Missouri Registered Agent.co comes second with $99 a year, flat, with legal documents scanned and sent to you online.
Its plan gives you an in-state street address for the registered office, and legal documents served on the company are scanned and sent to you online.
What you get
- In-state street address for the registered office
- Legal documents served on the company scanned and sent to you online
Why pick it
- Can form your LLC as well
- The lowest yearly price on this list
- Annual price $99, renewal price $99
Less good
- Focused on Missouri; other states need their own agent
Place3
Missouri-focusedMO Registered Agent.org
3. MO Registered Agent.org: best for Missouri-only companies
$99 a year, same at renewal
Our mark8.7out of 10
MO Registered Agent.org comes third with $99 a year, flat, with legal documents scanned and sent to you online.
Its plan gives you an in-state street address for the registered office, and legal documents served on the company are scanned and sent to you online.
Missouri Registered Agent.co and MO Registered Agent.org publish the same prices and the same plan features, so the gap between them is small and either is a sound choice.
What you get
- In-state street address for the registered office
- Legal documents served on the company scanned and sent to you online
Why pick it
- Can form your LLC as well
- The lowest yearly price on this list
- Annual price $99, renewal price $99
Less good
- Focused on Missouri; other states need their own agent
3 picks compared
| Rank | Service | Our score | Annual price | Renewal price | Best for | Link |
|---|
| 1 | Mainstay Filing | 9.1 | $149 | $149/yr | Agent plus fifty-state coverage | Visit Mainstay FilingPartner link. We may earn money if you buy. |
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| 2 | Missouri Registered Agent.co | 8.9 | $99 | $99/yr | Lowest yearly price on this list | Visit Missouri Registered Agent.coPartner link. We may earn money if you buy. |
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| 3 | MO Registered Agent.org | 8.7 | $99 | $99/yr | Lowest yearly price on this list | Visit MO Registered Agent.orgPartner link. We may earn money if you buy. |
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Each score is our editorial judgment out of 10 (see How we rank), not an average of customer ratings.
Annual and renewal prices in Missouri, 2026
| Service | Year one | Year two | Year three | Three-year total | Same price at renewal |
|---|
| Mainstay Filing | $149 | $149 | $149 | $447 | Yes |
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| Missouri Registered Agent.co | $99 | $99 | $99 | $297 | Yes |
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| MO Registered Agent.org | $99 | $99 | $99 | $297 | Yes |
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We read these prices on the companies' own sites on November 12, 2026. The state's fees do not change with the agent you choose.
Why Mainstay Filing is first
Five criteria set the order; the two heaviest are three-year cost and what one price covers. Here what one price covers made the difference.
Missouri Registered Agent.co is the lower price, but Mainstay's fifty-state coverage scored higher on our method.
See How we rank for every criterion and weight.
Official Missouri registered agent requirements
Every LLC must name a registered agent with an in-state street address. The address has to be a physical street address in Missouri. A P.O. box can be listed only together with a street address. Source: RSMo 347.030.
Does Missouri require a yearly report?
You will not file a yearly report in Missouri, though your registered agent must remain in place.
Registered agents in Missouri: questions
Does a Missouri LLC need a registered agent?
Yes. Every LLC must name a registered agent with an in-state street address.
How much does a registered agent cost in Missouri?
Expect $99 to $149 a year; renewal prices match the first year.
Can I be my own registered agent?
You can if you meet the requirements. A Missouri resident, or a corporation authorized in Missouri, whose business office is the registered office.
Which registered agents do you rank here?
Mainstay Filing ($149 a year), Missouri Registered Agent.co ($99 a year) and MO Registered Agent.org ($99 a year), from first to last.
What does the registered agent do?
It takes delivery of service of process and official notices, which each plan here scans for you.
Which Missouri registered agent is the best value?
Mainstay Filing ranks first on our method: $149 a year for an agent that can follow the company into any state at the same price.
Official sources and price pages
- RSMo 347.037, confirmed August 2026: revisor.mo.gov/main/OneSection.aspx?section=347.037
- Missouri formation fee: Filing fee, official source, confirmed October 2026: www.sos.mo.gov/CMSImages/Business/fees.pdf
- Missouri registered agent statute, confirmed October 2026: revisor.mo.gov/main/OneSection.aspx?section=347.030
- Mainstay Filing, Missouri service page (read November 12, 2026)
- Missouri Registered Agent.co, pricing and service pages (read November 12, 2026)
- MO Registered Agent.org, pricing and service pages (read November 12, 2026)