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The simple route · Maine

3 Best Foreign Registration Services in Maine (2026), Step by Step

In Maine for 2026, compare Mainstay Filing ($199), Maine Registered Agent.co ($199) and ME Registered Agent.org ($199), ranked best first. Set aside $250 for Maine to register, and $397 to $497 for services over three years.
Written by the Simple Filing Guide editorial team

Do this first

Cost to register
$250
Proof from home?
Yes (90 days or newer)
Ongoing
$150, Annual report for a foreign LLC
Our ranking
Mainstay Filing, Maine Registered Agent.co then ME Registered Agent.org

Our Maine shortlist

The order follows our five checks: three-year cost first, then what the price covers.

#1 Recommended first

1. Mainstay Filing: best for LLCs adding more states

Pay $199 to register and $149 for the agent after

Start with Mainstay Filing in Maine: it charges $199 plus state fees and waives the registered agent the first year.

Compare the price before you commit: Maine Registered Agent.co is $100 lower over three years, but it works in Maine only.

There is no registered agent fee in year one; from year two it is $149 a year.

Checklist: what is included
  • Application prepared and sent
  • Registered agent, included during year one
  • One service fee for all fifty states
What works
  • No registered agent fee in year one
  • The price does not change by state
  • Service fee of $199
Gaps
  • Maine Registered Agent.co renews its agent $50 lower
Start with Mainstay Filing Partner link. We may earn money if you buy.
#2 Maine specialist

2. Maine Registered Agent.co: best for a low yearly agent fee

Pay $199 to register and $99 for the agent after

Next, consider Maine Registered Agent.co: its service fees come to $397 across three years.

Checklist: what is included
  • Registration handled
  • Agent included in year one
What works
  • Agent included for the first year
  • Then $99 annually
  • $199 plus the state fee
Gaps
  • Your home state needs a separate agent
Start with Maine Registered Agent.co Partner link. We may earn money if you buy.
#3 Maine specialist

3. ME Registered Agent.org: best for a second in-state filer

Pay $199 to register and $99 for the agent after

Next, consider ME Registered Agent.org: its service fees come to $397 across three years.

It charges the same as Maine Registered Agent.co, so the order between them is a close call.

Checklist: what is included
  • Registration handled
  • Agent included in year one
What works
  • Then $99 annually
  • $199 plus the state fee
  • Agent included for the first year
Gaps
  • Your home state needs a separate agent
Start with ME Registered Agent.org Partner link. We may earn money if you buy.

The table

#ProviderStartRenewal costTotal for 3 yearsIncluded
1 Mainstay Filing $199$149/yr$497application prepared and sent; registered agent, included during year one; one service fee for all fifty states Start with Mainstay Filing Partner link. We may earn money if you buy.
2 Maine Registered Agent.co $199$99/yr$397registration handled; agent included in year one Start with Maine Registered Agent.co Partner link. We may earn money if you buy.
3 ME Registered Agent.org $199$99/yr$397registration handled; agent included in year one Start with ME Registered Agent.org Partner link. We may earn money if you buy.

Each company's listed prices on November 13, 2026. State fees are extra and do not vary by pick.

The key questions

At what point is registration required?

Do the registration first and the business second when an LLC from elsewhere enters Maine.

Not registering can lead to it has no standing to bring its own lawsuits (31 MRSA 1629(1)).

legislature.maine.gov, confirmed October 2026, official source

What does a foreign registration cost?

Doing it yourself costs $250. With a service, add $199.

Across three years the state's total comes to $550. maine.gov, confirmed October 2026, official source

What do I submit?

The Maine Secretary of State, Division of Corporations, UCC and Commissions handles registrations, and the Statement of Foreign Qualification to Conduct Activities (Form MLLC-12) is the one to file.

Provide certificate of existence issued within the last 90 days.

Is there a filing that repeats?

Add the Annual report for a foreign LLC to your calendar ($150).

Filings come due June 1.

What decided the ranking?

Filing jobs included, at 27%, puts Mainstay Filing first.

Total for three years is worth 37% and filing jobs included 27%, with three smaller checks breaking ties.

Maine Registered Agent.co covers only Maine; your home state would still need another provider.

See the scoring

Maine registration checklist

StepWhat to knowWhere it is from
Registration fee $250maine.gov, confirmed October 2026, official source
Proof of existence Yes, 90 dayslegislature.maine.gov, confirmed October 2026, official source
Annual report for a foreign LLC $150legislature.maine.gov, confirmed October 2026, official source
State total, years one to three $550Total of the lines above

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.

Also asked

Do I still need an agent in my home state?

Keep one at home. Mainstay Filing serves both states, and a local company serves only one.

What do the picks cost over three years?

Three-year costs: Mainstay Filing, $497; Maine Registered Agent.co, $397; ME Registered Agent.org, $397, not counting state fees.

Are the fees official?

Every state fee links to its official page, and every service price is read from the company's own site.

Do I need to hire a service?

No. You can file with the state yourself; a service saves time and can act as your agent, but nothing makes you hire one.

Will a service file the registration for me?

All of them do, and the state fee stays identical.

What is the best foreign registration service for Maine?

Choose Mainstay Filing first, then compare Maine Registered Agent.co and ME Registered Agent.org.

References

  1. August 2026 check of Maine Secretary of State, via maine.gov
  2. August 2026 check of Maine Secretary of State, via maine.gov
  3. August 2026 check of Maine report due date, via maine.gov
  4. August 2026 check of 31 M.R.S. sec. 1531, via legislature.maine.gov
  5. October 2026 check of Maine formation fee: Filing fee, via legislature.maine.gov
  6. October 2026 check of Maine registered agent statute, via legislature.maine.gov
  7. October 2026 check of Maine Secretary of State, foreign, via maine.gov
  8. October 2026 check of Form MLLC-12, via maine.gov
  9. October 2026 check of 31 MRSA § 1622, foreign, via legislature.maine.gov
  10. October 2026 check of 31 MRSA § 1623, activities, via legislature.maine.gov
  11. October 2026 check of 31 MRSA § 1629, consequences, via legislature.maine.gov
  12. Prices read November 13, 2026 from the Mainstay Filing Maine service page
  13. Prices read November 13, 2026 from the Maine Registered Agent.co pricing page
  14. Prices read November 13, 2026 from the ME Registered Agent.org pricing page