3 Best Foreign Registration Services in Missouri (2026)
LLC Review Desk's 2026 picks for foreign registration services in Missouri, favorite first, are Missouri Registered Agent.co ($199), Mainstay Filing ($199) and MO Registered Agent.org ($199). Missouri Registered Agent.co is our favorite, because registering in Missouri costs $199 and covers year one as your agent, then $99 a year.
By the LLC Review Desk editorial team
Position 1
Our top pick
1. Missouri Registered Agent.co: best for companies adding only Missouri
Service fee $199, state fee extra; $99 a year for the agent from year two
Our score
9.3out of 10
9.3 out of 10
Our favorite is Missouri Registered Agent.co, because $199 beyond the state fee gets you registered in Missouri, and the agent renews at $99.
You get a street address in the state for your registered office, and any papers served on the company are scanned into your online account.
Its three-year total is lower than Mainstay Filing's, and that matters a lot in our scoring.
In the price
The registration filing
A first year as your registered agent
What we like
The first registered agent year costs you nothing
Then $99 a year to keep the agent
$199 to register, plus the state fee
Trade-offs
Missouri only; your home state needs its own agent
Every score out of 10 is our editors' call, made with the weighted criteria on How we rank, not a customer rating.
What Missouri foreign registration services cost in 2026: year one, renewals and three years
Service
First year
Second year
Third year
Three-year total
Agent covered in year one
Missouri Registered Agent.co
$199
$99
$99
$397
Included
Mainstay Filing
$199
$149
$149
$497
Free
MO Registered Agent.org
$199
$99
$99
$397
Included
We took each price from the company's own pages on November 12, 2026. On top of every row, Missouri charges a $105 registration fee, which isn't in these totals.
Why we put Missouri Registered Agent.co first
LLC Review Desk gives three-year cost 29% and filings in the price 29%, then divides 42% among renewal price, state fit and up-front totals. For Missouri, it came down to three-year cost.
Missouri Registered Agent.co comes to $397 over three years, which is $100 less than Mainstay Filing. Both include the first year, so the renewal price decided it.
You can read every criterion and weight on How we rank.
Registering a foreign LLC in Missouri: fee, form and who to send it to
You register through the Missouri Secretary of State, Corporations Division, using the Application for Registration of a Foreign Limited Liability Company (Form LLC 4). The state charges $105. Missouri also wants certificate of good standing/existence from the home state that is no more than 60 days old.
Missouri doesn't ask foreign LLCs for a yearly report.
Get these ready first
Certificate of good standing/existence from the home state, issued within 60 days of when you file.
Your company's full legal name, exactly as registered at home, and the date it was formed there.
A registered agent with a street address in the state. Any service on this page can do it.
The $105 state fee to pay with the filing.
What happens if you skip Missouri registration
Until it registers, an out-of-state LLC can't sue in Missouri courts (RSMo 347.163.1). Its contracts still stand (RSMo 347.163.2).
Your questions about Missouri foreign registration services
Do I have to register my out-of-state LLC in Missouri?
If it does business there, yes. Until it registers, it can't sue in the state's courts.
What does registering a foreign LLC in Missouri come to?
The state charges $105, and services charge $199.
What form does Missouri use for foreign LLCs?
The state's form is the Application for Registration of a Foreign Limited Liability Company (Form LLC 4), and it goes to the Missouri Secretary of State, Corporations Division.
Does Missouri want paperwork from my home state?
It does: certificate of good standing/existence from the home state, no more than 60 days old.
Do I still need a registered agent after I register?
Yes. You keep a registered agent with a street address in the state as long as the company stays registered.
Who's the best choice for foreign registration in Missouri?
Missouri Registered Agent.co, because it's $199 plus the state fee, with your first registered agent year included, then $99 a year for the agent.