No.1
Best here
1. Mainstay Filing: best for all fifty states
$149 yearly, no change
Score9.3out of 10
First place: Mainstay Filing. One plan at $149 a year goes wherever the company goes, renewing at $149.
Its three-year total exceeds Missouri Registered Agent.co's by $150; the broader coverage outweighs that difference in our scoring.
In the price
- A registered office street address in any state you need
- Same-business-day scanning of legal papers served, free of charge
- Three government letters a year scanned without charge
- Compliance reminders
Why pick it
- Service of process on the company scanned within the same business day, no charge
- Three government letters a year scanned at no charge
- $149 a year, unchanged at renewal
- Accepts LLCs, corporations, LPs, LLPs and nonprofits
Weak spots
- The agent plan runs $50 a year above Missouri Registered Agent.co
- Annual report filing comes with the formation package, not the agent plan
No.2
Best local option
2. Missouri Registered Agent.co: best for the least expensive year among these agents
$99 yearly, no change
Score8.9out of 10
Second place: Missouri Registered Agent.co. It charges $99 a year, holding that price at renewal, the lowest yearly charge on this list.
The registered office is Missouri Registered Agent.co's in-state street address, and you read whatever is served on the company as a scan in your account.
In the price
- A street address in the state, on the public record
- Served legal papers are delivered to you as scans online
Why pick it
- A lower yearly charge than Mainstay Filing
- Also forms LLCs and includes the first agent year
- A yearly charge of $99 that stays the same
Weak spots
- Built for Missouri; elsewhere you need another agent
No.3
Missouri only
3. MO Registered Agent.org: best for Missouri specialists
$99 yearly, no change
Score8.6out of 10
Third place: MO Registered Agent.org. It charges $99 a year, holding that price at renewal, the lowest yearly charge on this list.
MO Registered Agent.org supplies a street address in the state as the registered office, and each legal paper served on the company is scanned to your online account.
MO Registered Agent.org mirrors Missouri Registered Agent.co on price and features, so the pair is nearly level.
In the price
- A registered office with a street address in the state
- Served legal papers are delivered to you as scans online
Why pick it
- A lower yearly charge than Mainstay Filing
- $99 a year, with no change at renewal
- Can form the LLC and cover agent service in year one
Weak spots
- Built for Missouri; elsewhere you need another agent
The 3 rulings in brief
| Rank | Provider | Ruling score | Yearly charge | Renewal | Suited to | Link |
|---|
| 1 | Mainstay Filing | 9.3 | $149 | $149/yr | An agent usable in all fifty states | Visit Mainstay FilingPartner link. We may earn money if you buy. |
|---|
| 2 | Missouri Registered Agent.co | 8.9 | $99 | $99/yr | The lowest yearly charge on this list | Visit Missouri Registered Agent.coPartner link. We may earn money if you buy. |
|---|
| 3 | MO Registered Agent.org | 8.6 | $99 | $99/yr | The lowest yearly charge on this list | Visit MO Registered Agent.orgPartner link. We may earn money if you buy. |
|---|
The 10-point scores are editorial. They apply the criteria on
How we rank and do not draw on customer ratings.
Missouri registered agent charges in 2026: year one, renewals and the three-year total
| Provider | Year one | Year two | Year three | Total over three years | Price unchanged at renewal |
|---|
| Mainstay Filing | $149 | $149 | $149 | $447 | Yes |
|---|
| Missouri Registered Agent.co | $99 | $99 | $99 | $297 | Yes |
|---|
| MO Registered Agent.org | $99 | $99 | $99 | $297 | Yes |
|---|
Each charge was taken from the provider's own pages on November 12, 2026. Missouri's own fees are the same whichever agent is chosen.
How the ruling was reached
The decisive criterion in Missouri was work taken off the founder. For reference, the method assigns 31% to charge over three years, 31% to work taken off the founder and 38% across renewal conduct, fit with local rules and pricing in plain sight.
Mainstay's plan reaches further: papers served on the company are scanned within the same business day at no cost, the price is identical across all fifty states, and three government letters a year are scanned free. Missouri Registered Agent.co charges less, so the margin is narrow.
Each criterion and its weight appear on How we rank.
What Missouri requires of a registered agent (source: Missouri Secretary of State)
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. Authority: RSMo 347.030.
Recurring duties once an agent is appointed in Missouri
Missouri sets no yearly LLC report. The standing duty is to keep a registered agent on record, because the state directs its notices there.
Questions on Missouri registered agents
Is a Missouri LLC obliged to appoint a registered agent?
Yes. Missouri law expects every LLC to appoint a registered agent with a physical address in the state, and that appointment is public.
What is the going yearly rate for a Missouri registered agent?
Yearly charges fall between $99 to $149, and every provider holds its price at renewal.
Is the owner permitted to serve as the registered agent?
Yes, when the state's conditions are met. A Missouri resident, or a corporation authorized in Missouri, whose business office is the registered office.
Which registered agents were heard in this ranking?
Mainstay Filing ($149 a year), Missouri Registered Agent.co ($99 a year) and MO Registered Agent.org ($99 a year), ruled upon in that order.
What is expected of a registered agent?
The registered agent is the company's address of record for lawsuits, subpoenas and state notices. It accepts them and passes them on, and each plan here delivers them to your online account as scans.
Which Missouri registered agent does the record favor?
Mainstay Filing, since the charge is $149 a year whether the company stays in one state or spreads out, and three government letters a year are scanned at no cost.
The record
- RSMo 347.037, on the record as of August 2026
- Missouri formation fee: Filing fee, official source, on the record as of October 2026
- Missouri registered agent statute, on the record as of October 2026
- Exhibit: Mainstay Filing, Missouri service page, November 12, 2026
- Exhibit: Missouri Registered Agent.co, pricing and service pages, November 12, 2026
- Exhibit: MO Registered Agent.org, pricing and service pages, November 12, 2026