Keep it simple · Maine

3 Best Foreign Registration Services in Maine (2026), Plainly

For foreign registration services in Maine, here is our 2026 ranking: Maine Registered Agent.co ($199), Mainstay Filing ($199) and ME Registered Agent.org ($199). Maine charges $250 to register, and the services add $397 to $497 over three years.

From the LLC Plainly editorial teamUpdated on November 13, 2026

The short version

Fee to register: $250
Home-state paper needed?: Yes (90 days at most)
Later on: $150, Annual report for a foreign LLC
Who to use: Maine Registered Agent.co, Mainstay Filing then ME Registered Agent.org

Our Maine picks

The scoring is spelled out on this page.

Start here

1. Maine Registered Agent.co: best for a budget registration

Registration is $199 plus the state fee, and the agent is $99 later

Number one is Maine Registered Agent.co, since you pay $199 with the first agent year included and $99 yearly afterward.

It's the cheaper of the two over three years, and cost is our first check.

Your money buys

Registration handled for you
A year of agent service to start

The good

Year one of the agent comes with it
Starts at $199 plus the state fee
Year two onward: $99

Trade-offs

Your home state needs a different agent

Nationwide

2. Mainstay Filing: best for adding several states

Registration is $199 plus the state fee, and the agent is $149 later

Mainstay Filing takes second, because registration is $199, and the registered agent costs nothing until year two.

At $100 more than Maine Registered Agent.co over three years, it lands lower on our list.

The registered agent costs nothing the first year. After that it's $149 a year, in any state.

Your money buys

Application prepared and sent
Registered agent, first year on us
A flat nationwide fee

The good

First-year agent is on the house
Pay $199 above the state fee
It's the same fee in every state

Trade-offs

Its agent renewal of $149 is $50 higher than Maine Registered Agent.co

A Maine favorite

3. ME Registered Agent.org: best for adding one more state

Registration is $199 plus the state fee, and the agent is $99 later

ME Registered Agent.org takes third, because you pay $199 with the first agent year included and $99 yearly afterward.

Its prices match Maine Registered Agent.co exactly, so either one works.

Your money buys

Registration handled for you
A year of agent service to start

The good

Year one of the agent comes with it
Year two onward: $99
Starts at $199 plus the state fee

Trade-offs

Your home state needs a different agent

Price check

#	Company	Year one	Renewal	Over three years	Covers
1	Maine Registered Agent.co	$199	$99/yr	$397	registration handled for you; A year of agent service to start	Check out Maine Registered Agent.coPartner link. We may earn money if you buy.
2	Mainstay Filing	$199	$149/yr	$497	application prepared and sent; registered agent, first year on us; A flat nationwide fee	Check out Mainstay FilingPartner link. We may earn money if you buy.
3	ME Registered Agent.org	$199	$99/yr	$397	registration handled for you; A year of agent service to start	Check out ME Registered Agent.orgPartner link. We may earn money if you buy.

Company prices from November 13, 2026, before state fees.

What you probably want to know

Do I have to register an LLC from another state?

An out-of-state LLC signs up with the Maine Secretary of State, Division of Corporations, UCC and Commissions first and does business in Maine afterward.

An unregistered LLC can run into it can't be a plaintiff (31 MRSA 1629(1)).

legislature.maine.gov, last seen October 2026

What's the price of foreign registration?

State fee $250; service $199 extra.

Add up the state's fees across three years and it's $550. maine.gov, last seen October 2026

What gets submitted?

The Maine Secretary of State, Division of Corporations, UCC and Commissions is the office, and the Statement of Foreign Qualification to Conduct Activities (Form MLLC-12) is what it wants.

The filing needs certificate of existence from the past 90 days.

What do I owe after registering?

The state wants a Annual report for a foreign LLC later on, priced at $150.

The due date reads: June 1.

What put number one on top?

It's cost across three years (33% of the score), and Maine Registered Agent.co does best there.

Cost across three years (33%) and work taken off your hands (31%) matter most, and three lighter checks sit behind them.

Maine Registered Agent.co comes out at $397 for three years, $100 below Mainstay Filing.

See how we score

Maine requirements, with sources

The rule	The answer	Check it
What you pay to register	$250	maine.gov, last seen October 2026
Home-state certificate	Yes, 90 days	legislature.maine.gov, last seen October 2026
Annual report for a foreign LLC	$150	legislature.maine.gov, last seen October 2026
State cost over three years	$550	Our total of the lines above

The last row is our own sum: the filing fee, the reports for years two and three and any minimum tax. Costs with no set price, like a newspaper notice, are left out.

Other things people ask

Do I need an agent in each state?

You do. Two states mean two sets of rules, and a one-state company stops at its border while Mainstay Filing keeps going.

What's each pick's bill across three years?

Maine Registered Agent.co: $397 / Mainstay Filing: $497 / ME Registered Agent.org: $397, not counting state fees.

How official are these figures?

Maine's fee schedules and forms for state costs; each company's price page for service costs.

Can I just do this myself?

No. The state takes filings straight from owners. A service saves you time and can serve as your agent, but nobody makes you hire one.

Is filing included in what they sell?

Yes. Every pick prepares and files it, and the state fee is the same no matter who you pick.

Who do you like best in Maine?

Maine Registered Agent.co comes first: the service fees come to $397 across three years. Then come Mainstay Filing and ME Registered Agent.org.

What we used for this page

Maine Secretary of State, maine.gov (confirmed August 2026)
Maine Secretary of State, maine.gov (confirmed August 2026)
Maine report due date, maine.gov (confirmed August 2026)
31 M.R.S. sec. 1531, legislature.maine.gov (confirmed August 2026)
Maine formation fee: Filing fee, legislature.maine.gov (confirmed October 2026)
Maine registered agent statute, legislature.maine.gov (confirmed October 2026)
Maine Secretary of State, foreign, maine.gov (confirmed October 2026)
Form MLLC-12, maine.gov (confirmed October 2026)
31 MRSA § 1622, foreign, legislature.maine.gov (confirmed October 2026)
31 MRSA § 1623, activities, legislature.maine.gov (confirmed October 2026)
31 MRSA § 1629, consequences, legislature.maine.gov (confirmed October 2026)
Maine Registered Agent.co's pricing page, as of November 13, 2026
Mainstay Filing's Maine service page, as of November 13, 2026
ME Registered Agent.org's pricing page, as of November 13, 2026