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Maine shortlist · foreign registration

3 Best Foreign Registration Services in Maine (2026)

Filing Shortlist cut the Maine field of foreign registration services down to ME Registered Agent.org ($199), Maine Registered Agent.co ($199) and Mainstay Filing ($199), in that order for 2026. ME Registered Agent.org is the first pick because the Maine registration is $199 and includes year one as agent, with $99 a year after that.

From the Filing Shortlist editorial team

Rank1

Top pick on this page

1. ME Registered Agent.org: best for companies adding just Maine

You pay $199 for the service and the state's fee besides; from the second year the agent is $99

Editor score9.2out of 10

ME Registered Agent.org takes the top spot because $199 above the state fee gets the company registered in Maine, and the agent renews at $99.

The registered office is an in-state street address supplied by the plan, and any papers served on the company show up as scans in your online account.

It comes in below Mainstay Filing over three years.

In the price

  • Maine registration filed for you
  • One year of registered agent service to start

Good

  • The registered agent role is free for the first year
  • $199 to register, plus state fees
  • An agent price of $99 in year two

Watch for

  • Maine only; your home state needs its own agent
  • The EIN application is an extra charge ($99)

Rank2

Best for a Maine-only company

2. Maine Registered Agent.co: best for Maine registrations only

You pay $199 for the service and the state's fee besides; from the second year the agent is $99

Editor score9.0out of 10

Maine Registered Agent.co makes the list at number two because $199 above the state fee gets the company registered in Maine, and the agent renews at $99.

The registered office is an in-state street address supplied by the plan, and any papers served on the company show up as scans in your online account.

The published prices and features of ME Registered Agent.org and Maine Registered Agent.co are identical, so the order between them is a coin flip between solid options.

In the price

  • Maine registration filed for you
  • One year of registered agent service to start

Good

  • $199 for the service, state fee extra
  • Covers your first year of registered agent service
  • $99 a year afterward for the agent

Watch for

  • Maine only; your home state needs its own agent
  • The EIN application is an extra charge ($99)

Rank3

Best for multi-state companies

3. Mainstay Filing: best for companies that work in more than one state

Service charge $199 ($499 due at checkout with the state fee); agent service costs $149 annually after year one

Editor score8.7out of 10

Mainstay Filing makes the list at number three because it charges $199 on top of the state fee, serves as registered agent free for year one and prices every state the same.

Past the free first year, agent service runs $149 a year, and that holds in every state.

ME Registered Agent.org undercuts it by $100 across three years, which leaves Mainstay Filing second on cost.

In the price

  • The registration filing prepared and submitted
  • Your registered agent for year one at no charge
  • Free scans of served papers on the same business day

Good

  • No charge for registered agent service in year one
  • $199 service fee, with the state's fee added
  • Papers served on the company are scanned the same business day at no charge
  • The same price in each of the fifty states

Watch for

  • The agent is $149 a year after year one, $50 above ME Registered Agent.org
Visit Mainstay FilingPartner link. We may earn money if you buy. Read the full Mainstay Filing review

The 3 picks side by side

RankCompanyShortlist scoreService priceSecond yearSuitsGo
1 ME Registered Agent.org 9.2 $199 $99/yr The smallest agent renewal on this list Visit ME Registered Agent.orgPartner link. We may earn money if you buy.
2 Maine Registered Agent.co 9.0 $199 $99/yr The smallest agent renewal on this list Visit Maine Registered Agent.coPartner link. We may earn money if you buy.
3 Mainstay Filing 8.7 $199 $149/yr Companies that operate across state lines Visit Mainstay FilingPartner link. We may earn money if you buy.

Each number out of 10 is our own mark, drawn from the weighted criteria on How we rank, and not a customer rating.

Maine foreign registration service pricing in 2026: first year, renewals, three-year total

CompanyFirst yearSecond yearThird yearThree-year totalAgent in year one
ME Registered Agent.org$199$99$99$397Included
Maine Registered Agent.co$199$99$99$397Included
Mainstay Filing$199$149$149$497Free

Every price comes from the company's own pages as of November 12, 2026. The $250 Maine registration fee comes on top of each row and is left out of the totals.

Why ME Registered Agent.org is first

Filing Shortlist puts 28% of the weight on three-year price and 28% on what the price covers. The remaining 44% goes to renewal terms, fit for the state and price clarity, and for Maine the deciding factor was three-year price.

ME Registered Agent.org adds up to $397 over three years, which is $100 below Mainstay Filing. Both services include year one, which left the renewal price to settle the order.

Every criterion and weight is set out on How we rank.

Registering a foreign LLC in Maine: fee, form and office

Registration goes to the Maine Secretary of State, Division of Corporations, UCC and Commissions on the Statement of Foreign Qualification to Conduct Activities (Form MLLC-12). The state fee is $250. Along with the form, Maine expects certificate of existence, no older than 90 days when you file.

Each year after that, the company files the Annual report for a foreign LLC for $150, due June 1.

What to have ready before you file

  • Certificate of existence, dated within 90 days of filing.
  • The company's exact legal name and its formation date in the home state.
  • A registered agent at a street address in the state. Every company on this shortlist can be that agent.
  • Payment of the $250 state fee with the filing.
  • A reminder in your own calendar for the Annual report for a foreign LLC and its $150 fee.

The cost of skipping Maine registration

An unregistered out-of-state LLC cannot sue in Maine courts (31 MRSA 1629(1)).

Common questions about Maine foreign registration services

Must an LLC from another state register in Maine?

It must, once it does business in the state. An unregistered company cannot sue in the state's courts until it does.

What is the full price of a foreign LLC registration in Maine?

The state fee is $250, and service fees run $199.

What is the Maine foreign registration form called?

It is the Statement of Foreign Qualification to Conduct Activities (Form MLLC-12), submitted to the Maine Secretary of State, Division of Corporations, UCC and Commissions.

Does Maine ask for proof of good standing from home?

It does. The state wants certificate of existence, dated no more than 90 days before the filing.

Does a registered foreign LLC still need a registered agent?

Yes. The company keeps a registered agent in the state, at a street address there, for as long as it stays registered.

Which service leads the Maine foreign registration shortlist?

ME Registered Agent.org, because registering costs $199 plus the state fee, with the first registered agent year covered, then $99 a year for the agent.

More from us

Where the figures come from

  1. Maine Secretary of State (checked again August 2026)
  2. Maine Secretary of State (checked again August 2026)
  3. Maine report due date (checked again August 2026)
  4. 31 M.R.S. sec. 1531 (checked again August 2026)
  5. Maine formation fee: Filing fee, official source (checked again October 2026)
  6. Maine registered agent statute (checked again October 2026)
  7. Maine Secretary of State, foreign entities (checked again October 2026)
  8. Form MLLC-12 (checked again October 2026)
  9. 31 MRSA § 1622, foreign qualification (checked again October 2026)
  10. 31 MRSA § 1623, activities that do not require qualification (checked again October 2026)
  11. 31 MRSA § 1629, consequences of not qualifying (checked again October 2026)
  12. Pulled from ME Registered Agent.org: pricing and service pages, November 12, 2026
  13. Pulled from Maine Registered Agent.co: pricing and service pages, November 12, 2026
  14. Pulled from Mainstay Filing: Maine service page, November 12, 2026