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LLC SchoolhousePlain LLC lessons, one state at a time.

Module 3 · Maine

Foreign LLC Registration in Maine (2026): a 5-Step Lesson and the 3 Best Services

Here is who we would send a new founder to for registering an LLC from another state in Maine in 2026: Mainstay Filing ($199), Maine Registered Agent.co ($199) and ME Registered Agent.org ($199), in grade order. The 5 steps run from checking whether you must register to keeping up with the yearly filing, and the state fee is $250.

Taught by the LLC Schoolhouse editors

Key facts

Filing fee$250The official page is maine.gov, last confirmed in October 2026
Home certificate90 daysAge limit
Upkeep filing$150Annual report for a foreign LLC
State fees over three years$550State charges only
Steps5Numbered below

You will be able to

  • Whether Maine registration applies to you
  • The form and the fee
  • What it costs to stay registered
  • Who we would hire to file

The Maine services we recommend

Three-year cost and the number of steps a price takes off your list weigh the most; the grading page lists all five criteria.
Top of the class

1. Mainstay Filing: best for several registrations

$199 plus fees; $149 a year later

Mainstay Filing earns the highest mark because it files the Maine registration for $199 plus the state fee and covers the first agent year.

The three-year premium over Maine Registered Agent.co is $100, and the 33% weight on steps handled covers it.

The agent renews at $149 a year in every state.

What the price covers

  • The filing is done for you
  • The registered agent costs nothing in year one
  • One fee in every state

Marks in its favor

  • Agent covered for year one
  • $199 to register
  • One price anywhere

Where it loses points

  • A bigger agent renewal ($149)
Maine focus

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

$199 plus fees; $99 a year later

Taking second place is Maine Registered Agent.co, where a $199 service fee, then $99 a year for the agent in Maine.

What the price covers

  • Your Maine registration is prepared and filed
  • One year of agent service

Marks in its favor

  • $199 and the state fee
  • $99 yearly from year two
  • No agent fee in year one

Where it loses points

  • Your home state needs a separate agent
Maine focus

3. ME Registered Agent.org: best for a low agent renewal

$199 plus fees; $99 a year later

Taking third place is ME Registered Agent.org, where a $199 service fee, then $99 a year for the agent in Maine.

It posts the same prices as Maine Registered Agent.co.

What the price covers

  • Your Maine registration is prepared and filed
  • One year of agent service

Marks in its favor

  • $99 yearly from year two
  • $199 and the state fee
  • No agent fee in year one

Where it loses points

  • Your home state needs a separate agent

The 3 graded picks compared

#ServiceFirst yearFrom year twoThree-year total
1Mainstay Filing$199$149/yr$497Visit Mainstay FilingPartner link. We may earn money if you buy.
2Maine Registered Agent.co$199$99/yr$397Visit Maine Registered Agent.coPartner link. We may earn money if you buy.
3ME Registered Agent.org$199$99/yr$397Visit ME Registered Agent.orgPartner link. We may earn money if you buy.
Company prices as posted on November 13, 2026. Each row also needs the $250 state fee.

The steps

  1. Step
    1

    Confirm that you must register

    If your LLC was formed elsewhere and works in Maine, it must first register there as a foreign LLC. Skipping it has a price: Before it registers, the LLC may not bring a lawsuit in Maine courts (31 MRSA 1629(1)).

    Where this comes from: The official page is legislature.maine.gov, last confirmed in October 2026

  2. Step
    2

    Order the document from your home state

    Maine asks for certificate of existence, no older than 90 days.

    Order it last so it is still fresh when you file.

  3. Step
    3

    Find a registered agent with a Maine address

    Every LLC must name a registered agent with an in-state street address. A noncommercial agent lists a physical street address in Maine, not a P.O. box. Commercial agents keep their address on file with the state.

    The services in our list provide this.

    Where this comes from: The official page is legislature.maine.gov, last confirmed in October 2026

  4. Step
    4

    Deliver the Statement of Foreign Qualification to Conduct Activities

    What the Maine Secretary of State, Division of Corporations, UCC and Commissions needs from you is the filing named above and a $250 fee.

    Where this comes from: The official page is maine.gov, last confirmed in October 2026

  5. Step
    5

    After you register

    Once registered, file the Annual report for a foreign LLC for $150, June 1.

Maine costs by step

Cost itemPaid toAmount
Registration feeState$250
Annual report for a foreign LLCState$150
Optional serviceService$199 for year one
Three-year state totalState$550
Official Maine fees, cited below. The three-year line adds the filing fee, the reports in years two and three and any minimum tax.

How we graded the Maine picks

won on homework the price handles (33% of the grade), with right behind.

The company belongs to one state and works in another, which makes one provider for both the strongest choice.

Short answers

Which fees come with a foreign LLC registration in Maine?

$250 as the official fee. A service adds $199.

Which form do I file to register?

Look for the Statement of Foreign Qualification to Conduct Activities (Form MLLC-12); you deliver it to the Maine Secretary of State, Division of Corporations, UCC and Commissions.

Do I need a certificate from my home state?

Yes: certificate of existence, issued within 90 days of filing.

What if the LLC does business there without registering?

Before it registers, the LLC may not bring a lawsuit in Maine courts (31 MRSA 1629(1)).

What is due after registering?

Step 5 covers it: the Annual report for a foreign LLC for $150.

Which service should handle the registration?

We would pick Mainstay Filing, because $199 above the state fee in any state, and the first year of agent service costs nothing. After that, Maine Registered Agent.co and ME Registered Agent.org.

Keep studying

Class references

  1. Maine Secretary of State is covered in the official page at maine.gov; our notes follow it as of August 2026.
  2. Maine Secretary of State is covered in the official page at maine.gov; our notes follow it as of August 2026.
  3. Maine report due date is covered in the official page at maine.gov; our notes follow it as of August 2026.
  4. 31 M.R.S. sec. 1531 is covered in the official page at legislature.maine.gov; our notes follow it as of August 2026.
  5. Maine formation fee: Filing fee, official source is covered in the official page at legislature.maine.gov; our notes follow it as of October 2026.
  6. Maine registered agent statute is covered in the official page at legislature.maine.gov; our notes follow it as of October 2026.
  7. Maine Secretary of State, foreign entities is covered in the official page at maine.gov; our notes follow it as of October 2026.
  8. Form MLLC-12 is covered in the official page at maine.gov; our notes follow it as of October 2026.
  9. 31 MRSA § 1622, foreign qualification is covered in the official page at legislature.maine.gov; our notes follow it as of October 2026.
  10. 31 MRSA § 1623, activities that do not is covered in the official page at legislature.maine.gov; our notes follow it as of October 2026.
  11. 31 MRSA § 1629, consequences of not qualifying is covered in the official page at legislature.maine.gov; our notes follow it as of October 2026.
  12. Prices taken from the Maine service page of Mainstay Filing on November 13, 2026
  13. Prices taken from the pricing page of Maine Registered Agent.co on November 13, 2026
  14. Prices taken from the pricing page of ME Registered Agent.org on November 13, 2026