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Formation Explained

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Learn the basics · Maine

3 Best Registered Agents in Maine (2026) and Why

For 2026, the registered agents we would use in Maine are Mainstay Filing ($149 a year), Maine Registered Agent.co ($99 a year) and ME Registered Agent.org ($99 a year), ranked in that order. An agent runs $99 to $149 in year one, which adds up to $297 to $447 across three years.
Formation Explained editorial team

Quick explanation

Does the law demand one?
Must be named
What the statute calls it
Registered agent
Cost per year
$99 to $149 per year
Who we recommend
Mainstay Filing, Maine Registered Agent.co then ME Registered Agent.org

Maine: the ranked picks

The order comes from our method: three-year cost first, then how much work the price covers.
1 Best overall

1. Mainstay Filing: best for owners planning to grow

Yearly cost $149, renewing for $149

Why Mainstay Filing? The price is $149 a year wherever the LLC is registered.

The additional $150 compared with Maine Registered Agent.co buys coverage outside Maine.

Includes

  • A street address in the state
  • Up to three government mailings a year scanned for free
  • Works for LLCs, corporations, LPs, LLPs and nonprofits

Points in its favor

  • Annual price $149 and a renewal price of $149
  • The price is the same in all fifty states

Where it falls short

  • $50 more a year than Maine Registered Agent.co
  • Report filing requires the formation package
2 Maine specialist

2. Maine Registered Agent.co: best for one-state companies

Yearly cost $99, renewing for $99

In second place is Maine Registered Agent.co, because it charges $99 a year, renewing at $99, for an LLC that remains in Maine.

Includes

  • A physical address in the state
  • Legal mail scanned and posted

Points in its favor

  • $99 annually, flat
  • A lower annual price than Mainstay Filing

Where it falls short

  • Another state needs another agent
  • You file the annual report yourself
3 Maine specialist

3. ME Registered Agent.org: best for staying close to home

Yearly cost $99, renewing for $99

In third place is ME Registered Agent.org, because it charges $99 a year, renewing at $99, for an LLC that remains in Maine.

Its published prices are identical to Maine Registered Agent.co, so choosing between them is a close call.

Includes

  • A physical address in the state
  • Legal mail scanned and posted

Points in its favor

  • A lower annual price than Mainstay Filing
  • $99 annually, flat

Where it falls short

  • Another state needs another agent
  • You file the annual report yourself

Compare prices

#CompanyYear oneEach year afterOver three yearsWhat you get
1 Mainstay Filing $149$149/yr$447A street address in the state; up to three government mailings a year scanned for free; Works for LLCs, corporations, LPs, LLPs and nonprofits Go to Mainstay FilingPartner link. We may earn money if you buy.
2 Maine Registered Agent.co $99$99/yr$297A physical address in the state; legal mail scanned and posted Go to Maine Registered Agent.coPartner link. We may earn money if you buy.
3 ME Registered Agent.org $99$99/yr$297A physical address in the state; legal mail scanned and posted Go to ME Registered Agent.orgPartner link. We may earn money if you buy.
Figures come from company pricing on November 13, 2026; three years means year one plus two renewals.

What owners want to know

Is naming a registered agent optional?

Every LLC must name a registered agent with an in-state street address.

Authority: 5 M.R.S. § 105. legislature.maine.gov, confirmed October 2026

Who can serve in the role?

A commercial registered agent listed with the Secretary of State, or a noncommercial agent: an individual or entity serving as agent in Maine, or the holder of a named position in the company.

You can fill the role yourself for free if you qualify.

What is the price of agent service?

Budget $99 to $149 each year, $297 to $447 for three years.

State fees stay put no matter the agent.

What does an agent do for the LLC?

It serves as the LLC's address in Maine for court papers and state letters.

A service is only as useful as its forwarding, so ask how documents reach you. What does service of process mean?

What recurs apart from the agent?

One filing repeats: the annual report, once a year, costing $85. Filings fall due June 1, a date worth noting down.

maine.gov, confirmed August 2026

What decided the ranking?

Mainstay Filing leads on how much work the price handles, a criterion that carries 28% of the weight.

Our weighting leans on what three years cost first and how much work the price handles second, then three smaller factors.

Coverage settled it: all fifty states against one.

See the full method

What Maine requires

What it coversDetailReference
Cost of filing$175legislature.maine.gov, confirmed October 2026
Registered agentMust be namedlegislature.maine.gov, confirmed October 2026
Annual report$85 every yearmaine.gov, confirmed August 2026
Three-year state total$345Computed from the lines above
The three-year line combines the filing fee, the reports for years two and three and any yearly minimum tax. Costs with no set amount, like a newspaper notice, are not counted.

Further questions

Can I serve as the agent myself?

Yes, as long as your address and status match what the state demands.

Which addresses does the state accept?

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.

What are the three-year totals?

$447 with Mainstay Filing, $297 with Maine Registered Agent.co, $297 with ME Registered Agent.org

Where do the numbers come from?

The state side uses Maine's own publications. The service side uses published company prices.

Do I have to hire a service?

No law demands one. A service is a convenience.

Which one should I choose in Maine?

Mainstay Filing comes first: $149 a year covers an agent in this state and in any state you add. After it come Maine Registered Agent.co and ME Registered Agent.org.

Sources used on this page

  1. Reference: Maine Secretary of State at maine.gov, checked in August 2026
  2. Reference: Maine Secretary of State at maine.gov, checked in August 2026
  3. Reference: Maine report due date at maine.gov, checked in August 2026
  4. Reference: 31 M.R.S. sec. 1531 at legislature.maine.gov, checked in August 2026
  5. Reference: Maine formation fee: Filing fee at legislature.maine.gov, checked in October 2026
  6. Reference: Maine registered agent statute at legislature.maine.gov, checked in October 2026
  7. Maine service page from Mainstay Filing, prices as of November 13, 2026
  8. pricing page from Maine Registered Agent.co, prices as of November 13, 2026
  9. pricing page from ME Registered Agent.org, prices as of November 13, 2026