3 Best Foreign Registration Services in Maine (2026)
LLC Review Desk's 2026 picks for foreign registration services in Maine, favorite first, are Maine Registered Agent.co ($199), ME Registered Agent.org ($199) and Mainstay Filing ($199). Maine Registered Agent.co is our favorite, because registering in Maine 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 in Maine
1. Maine Registered Agent.co: best for companies adding only Maine
You pay $199 plus the state fee, then $99 a year for the agent
Our score
9.5out of 10
9.5 out of 10
Our favorite is Maine Registered Agent.co, because $199 beyond the state fee gets you registered in Maine, 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.
You pay less over three years than with Mainstay Filing.
In the price
Filing with the state
A year of registered agent service at the outset
What we like
Registers the company for $199, with the state fee on top
Then $99 a year to keep the agent
Covers your first year of registered agent service
3. Mainstay Filing: best for owners working in more than one state
$199 for the service, $499 due at checkout with the state fee; the agent is $149 a year from year two
Our score
8.8out of 10
8.8 out of 10
In third place is Mainstay Filing, because $199 gets the Maine registration filed, year one as registered agent costs nothing, and after that it's $149 a year.
Once year one is over, you pay $149 a year for the agent, whichever state you picked.
Maine Registered Agent.co is $100 cheaper over three years, so Mainstay Filing comes second on cost.
In the price
Your registration filing, taken care of
The first registered agent year at no charge
Papers served on the company are scanned and uploaded the same business day, free
What we like
$199 for the service, plus the state's fee
The same price in all fifty states
Your first year of registered agent service is free
Same-business-day scans of papers served on the company, no charge
Trade-offs
After year one the agent is $149 a year, $50 more than Maine Registered Agent.co
Every score out of 10 is our editors' call, made with the weighted criteria on How we rank, not a customer rating.
What Maine 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
Maine Registered Agent.co
$199
$99
$99
$397
Included
ME Registered Agent.org
$199
$99
$99
$397
Included
Mainstay Filing
$199
$149
$149
$497
Free
We took each price from the company's own pages on November 12, 2026. On top of every row, Maine charges a $250 registration fee, which isn't in these totals.
Why we put Maine 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 Maine, it came down to three-year cost.
Maine 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 Maine: fee, form and who to send it to
You register through the Maine Secretary of State, Division of Corporations, UCC and Commissions, using the Statement of Foreign Qualification to Conduct Activities (Form MLLC-12). The state charges $250. Maine also wants certificate of existence that is no more than 90 days old.
After that, plan on the Annual report for a foreign LLC each cycle ($150) by June 1.
Get these ready first
Certificate of existence, issued within 90 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 $250 state fee to pay with the filing.
A reminder for yourself about the Annual report for a foreign LLC and its $150 fee.
What happens if you skip Maine registration
Until it registers, an out-of-state LLC can't sue in Maine courts (31 MRSA 1629(1)).
Your questions about Maine foreign registration services
Do I have to register my out-of-state LLC in Maine?
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 Maine come to?
The state charges $250, and services charge $199.
What form does Maine use for foreign LLCs?
The state's form is the Statement of Foreign Qualification to Conduct Activities (Form MLLC-12), and it goes to the Maine Secretary of State, Division of Corporations, UCC and Commissions.
Does Maine want paperwork from my home state?
It does: certificate of existence, no more than 90 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 Maine?
Maine 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.