3 Best Foreign Registration Services in Missouri (2026), Step by Step
Start with this 2026 ranking of foreign registration services in Missouri: MO Registered Agent.org ($199), Mainstay Filing ($199) and Missouri Registered Agent.co ($199), in that order. State fee: $105. Service fees over three years: $397 to $497.
Written by the Simple Filing Guide editorial team
Start here
Fee at the state
$105
Proof from home?
Required (60 day age limit)
Ongoing
None required
Recommended
MO Registered Agent.org, Mainstay Filing then Missouri Registered Agent.co
Where to start in Missouri
Prices come from each company's own page. Read how we rank for the method.
#1Top pick
1. MO Registered Agent.org: best for registering in this state only
Pay $199 to register and $99 for the agent after
MO Registered Agent.org takes the top spot, since $199 over the state fee at the start, then $99 yearly.
Compare the three-year totals: it lands under Mainstay Filing, and cost is the check we weigh most.
Across three years the state's total comes to $105. verify at sos.mo.gov, as of October 2026
Where does the registration go?
You need one form, the Application for Registration of a Foreign Limited Liability Company (Form LLC 4), and the Missouri Secretary of State, Corporations Division is where it goes.
Provide certificate of good standing/existence from the home state newer than 60 days.
Are there ongoing fees to plan for?
No repeat filing follows registration.
Why is number one first?
MO Registered Agent.org wins on total for three years, a 37% check.
Total for three years is worth 37% and filing jobs included 27%, with three smaller checks breaking ties.
MO Registered Agent.org totals $397 across three years, which is $100 under Mainstay Filing.
Last row = filing fee + report in year two + report in year three + minimum tax, if any. Variable costs are described in the text, not added.
Related questions
What about the state where I formed the LLC?
Yes. Your home state keeps its own agent rule, and Mainstay Filing can serve both states from one account.
Three years in, what has each cost?
$397 for MO Registered Agent.org, $497 for Mainstay Filing, $397 for Missouri Registered Agent.co, not counting state fees.
Where do these figures come from?
State-set fees come from Missouri's publications; what services charge comes from the prices they post.
Do I have to use a service?
If you meet the rules on this page, you can file on your own, and the state charges the same either way.
Is filing part of the service?
Yes, filing is part of what these companies sell, and the state fee does not move.
Which foreign registration service should I start with in Missouri?
MO Registered Agent.org, because registering costs $199 over the state fee, agent covered in year one, then $99 a year. Then Mainstay Filing and Missouri Registered Agent.co.