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LLC UnpackedEvery filing, unpacked: the fee, the form, the catch.

Open it up · Missouri

3 Best LLC Services in Missouri (2026): What Is Inside Each

Opened up for 2026, the LLC formation services in Missouri rank Mainstay Filing ($199), MO Registered Agent.org ($199) and Missouri Registered Agent.co ($199), best on top. Inside the cost: $50 goes to the state, and three years of service add $397 to $597.
Unpacked by the LLC Unpacked editorial team

Four things inside

State filing fee
$50, one time
Next layer
No report
Registered agent
Yes, by law
Our pick
Mainstay Filing, MO Registered Agent.org then Missouri Registered Agent.co

Missouri: ranked

Curious about the order? The method is here.
Ranked first

1. Mainstay Filing: best for formation and agent in one price

$199 a year plus $50 to the state

Mainstay Filing is first, and renewal stays at $199, and what you get inside is formation plus the registered agent.

MO Registered Agent.org would save $200 across three years if the LLC stays in Missouri.

Inside the price

  • The formation filing, packed in
  • Registered agent across the full year
  • EIN application handled
  • State fees passed through without markup

Inside, the good

  • The EIN application is inside the price
  • $199 a year covers filing, agent
  • Stays at $199

Inside, the catch

  • A $100 yearly premium over MO Registered Agent.org
  • Missouri has no report, so less is packed in
Missouri only

2. MO Registered Agent.org: best for a business that stays in one state

Year one $199, later years $99

MO Registered Agent.org lands second, and it opens at $199 with the first agent year inside and renews at $99.

Inside the price

  • Missouri formation filing
  • Agent included in year one

Inside, the good

  • A first year of agent service is inside
  • Formation fee of $199
  • $99 a year from year two

Inside, the catch

  • The EIN application costs $99 extra
Missouri only

3. Missouri Registered Agent.co: best for one-state companies

Year one $199, later years $99

Missouri Registered Agent.co lands third, and it opens at $199 with the first agent year inside and renews at $99.

Its prices match MO Registered Agent.org exactly, so the order between them is close.

Inside the price

  • Missouri formation filing
  • Agent included in year one

Inside, the good

  • $99 a year from year two
  • A first year of agent service is inside
  • Formation fee of $199

Inside, the catch

  • The EIN application costs $99 extra

Inside each price

#CompanyYear oneRenewalTotal, 3 yearsWhat is inside
1Mainstay Filing$199$199/yr$597the formation filing, packed in; registered agent across the full year; EIN application handledOpen Mainstay FilingPartner link. We may earn money if you buy.
2MO Registered Agent.org$199$99/yr$397missouri formation filing; agent included in year oneOpen MO Registered Agent.orgPartner link. We may earn money if you buy.
3Missouri Registered Agent.co$199$99/yr$397missouri formation filing; agent included in year oneOpen Missouri Registered Agent.coPartner link. We may earn money if you buy.
Service fees only, from company prices read November 13, 2026. State fees are the same whichever pick you open.

Layer by layer

How much does forming an LLC cost in this state?

$50 is the state's share. Add $199 if a service files in year one.

Across three years the state collects $50, filing fee included. sos.mo.gov holds the original, confirmed October 2026

What do I actually send the state?

The Articles of Organization (Form LLC-1) is the filing, and the Missouri Secretary of State is where it goes. Approval creates the LLC.

sos.mo.gov holds the original, confirmed October 2026

Must the LLC 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 holds the original, confirmed October 2026

What is owed in later years?

Opening this one up shows no report and no report fee.

Can I file it myself instead of hiring a service?

Nothing stops you. Without a service, your three-year bill is the state's $50.

Services add $397 to $597 across three years to take the filings off your desk.

Why is the stack in this order?

On what is inside the price (29%), Mainstay Filing comes out ahead.

Two layers carry most of the weight, total across three years (34%) and what is inside the price (29%).

Without a Missouri report in the box, coverage barely tips the balance.

How we open it up

Missouri formation, unpacked

RequirementAmount or ruleOfficial source
LLC filing fee$50sos.mo.gov holds the original, confirmed October 2026
Registered agentYes, by lawrevisor.mo.gov holds the original, confirmed October 2026
State fees, years one to three$50The rows above, stacked
The last row stacks the filing fee, the reports in years two and three and any minimum tax. A cost with no fixed amount, such as a newspaper notice, is explained above and kept out of the sum.

More boxes to open

Is the EIN application inside the price?

Only Mainstay Filing packs it in. Elsewhere it is $99 at MO Registered Agent.org and $99 at Missouri Registered Agent.co.

What do the picks cost over three years?

Mainstay Filing stacks up to $597, MO Registered Agent.org stacks up to $397, Missouri Registered Agent.co stacks up to $397, with state fees on top.

What do these numbers rest on?

Official Missouri paperwork stands behind every state fee here, and every service price traces back to the company's own pricing.

Do I have to use a service?

No. Owners can file with the state directly. A service saves time and can act as agent, but nothing makes you hire one.

Are there yearly state fees?

Opening this one up shows no report and no report fee.

What is the best LLC service for Missouri?

Open Mainstay Filing first, then compare MO Registered Agent.org and Missouri Registered Agent.co.

What the page rests on

  1. Unpacking RSMo 347.037 led us to revisor.mo.gov, confirmed August 2026, which you can open yourself
  2. Unpacking Missouri formation fee: Filing fee led us to sos.mo.gov, confirmed October 2026, which you can open yourself
  3. Unpacking Missouri registered agent statute led us to revisor.mo.gov, confirmed October 2026, which you can open yourself
  4. Mainstay Filing Missouri service page, read November 13, 2026
  5. MO Registered Agent.org pricing page, read November 13, 2026
  6. Missouri Registered Agent.co pricing page, read November 13, 2026