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Biz Formation Report

Rankings of registered agents, LLC formation and foreign registration services in all 50 states.

Registered agents report · Maine

3 Best Registered Agents in Maine (2026)

By the Biz Formation Report editorial team

Biz Formation Report ranks registered agents in Maine for 2026 as Mainstay Filing ($149 a year), Maine Registered Agent.co ($99 a year) and ME Registered Agent.org ($99 a year), in that order. Mainstay Filing earns the top grade: $149 a year, flat at renewal, with papers served on the company scanned the same business day at no charge.

No.1

Number one here

1. Mainstay Filing: best for all fifty states

Score9.6out of 10
$149 a year, unchanged at renewal

Top grade, Mainstay Filing: a $149 yearly plan that works in every state, renewing at $149.

A company still to be formed can use Mainstay's $199-a-year package, which files the Maine paperwork and the annual report.

Over three years Mainstay costs $150 more than Maine Registered Agent.co; our grading treats the broader coverage as worth that.

What you get

  • A registered office address in any state you need
  • Same-business-day scanning of legal papers served, no fee
  • The first three government mailings of the year scanned at no charge
  • Compliance reminders

Good

  • Open to LLCs, corporations, LPs, LLPs and nonprofits
  • Served papers scanned within the same business day, free
  • $149 a year, no renewal increase
  • Three government mailings a year scanned at no cost

Weak spots

  • The agent alone costs $50 a year more than Maine Registered Agent.co
  • Annual report filing requires the formation package
Visit Mainstay FilingPartner link. We may earn money if you buy.
Read the Mainstay Filing review
No.2

Best local option

2. Maine Registered Agent.co: best for the lowest annual price on this list

Score9.3out of 10
$99 a year, unchanged at renewal

Second grade, Maine Registered Agent.co: $99 a year flat, with online scans of any legal papers served.

Served legal papers go to the in-state address Maine Registered Agent.co provides, and you receive scans of them online.

What you get

  • A street address in the state, on the public record
  • Scans of served papers are posted to your account

Good

  • $99 a year, unchanged at renewal
  • Includes the first agent year when it forms your LLC
  • Yearly price under Mainstay Filing's

Weak spots

  • The annual report filing is left to you
  • Serves Maine only; other states need a separate agent
Visit Maine Registered Agent.coPartner link. We may earn money if you buy.
Read the Maine Registered Agent.co review
No.3

Maine-focused

3. ME Registered Agent.org: best for companies based in Maine

Score9.2out of 10
$99 a year, unchanged at renewal

Third grade, ME Registered Agent.org: $99 a year flat, with online scans of any legal papers served.

With ME Registered Agent.org, the registered office has a street address in the state, and served papers reach you as online scans.

Prices and features do not separate Maine Registered Agent.co from ME Registered Agent.org; either works.

What you get

  • A physical in-state address listed for the company
  • Online scans of legal papers served on the company

Good

  • Yearly price under Mainstay Filing's
  • Includes the first agent year when it forms your LLC
  • Yearly price of $99, steady at renewal

Weak spots

  • The annual report filing is left to you
  • Serves Maine only; other states need a separate agent
Visit ME Registered Agent.orgPartner link. We may earn money if you buy.
Read the ME Registered Agent.org review

Summary of the 3 grades

RankProviderGradePrice per yearRenewal priceBest fitSite
1Mainstay Filing9.6$149$149/yrOne agent across fifty statesVisit Mainstay FilingPartner link. We may earn money if you buy.
2Maine Registered Agent.co9.3$99$99/yrThe lowest yearly price we rank hereVisit Maine Registered Agent.coPartner link. We may earn money if you buy.
3ME Registered Agent.org9.2$99$99/yrThe lowest yearly price we rank hereVisit ME Registered Agent.orgPartner link. We may earn money if you buy.

The grades are editorial: Biz Formation Report assigns every mark out of 10 using the criteria on How we rank, not customer ratings.

Maine registered agent prices, 2026: year one, renewal and three-year outlay

ProviderYear 1Year 2Year 3Three-year outlayRenewal at the same price
Mainstay Filing$149$149$149$447Yes
Maine Registered Agent.co$99$99$99$297Yes
ME Registered Agent.org$99$99$99$297Yes

All prices were taken from the companies' own websites on November 12, 2026. Maine's own fees are the same whichever agent is named.

Why Mainstay Filing ranks first

Of the grade, 32% rests on three-year bill and 32% on what the money buys; renewal handling, local rules match and pricing openness share the remaining 36%. What the money buys decided Maine.

Mainstay's agent plan grades higher on coverage: served papers are scanned the same business day at no fee, the price is identical in all fifty states and three government mailings a year are scanned free. Maine Registered Agent.co wins on cost, and the margin is thin.

Every criterion and weight is listed on How we rank.

Maine registered agent rules according to Maine Secretary of State (official)

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. Authority: 5 M.R.S. § 105.

Maine's annual report: cost, deadline and your agent

The annual report is due from every Maine LLC every year, by June 1. The state charges $85. A late filing adds $50. Related notices are mailed to your registered agent.

Maine registered agent: common questions

Does a Maine LLC have to maintain a registered agent?

Yes. The state expects every LLC to keep a registered agent on record, and Maine requires that agent to have a street address inside its borders.

How much do Maine registered agents charge per year?

Annual charges run from $99 to $149, and prices are unchanged at renewal.

Can the owner be the company's own registered agent?

Yes, provided you meet the state's requirements. 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.

What is the filing deadline for the Maine annual report?

The deadline: June 1. The state charges $85. Miss it and $50 is added.

Which registered agents does this report rank?

Mainstay Filing ($149 a year), Maine Registered Agent.co ($99 a year) and ME Registered Agent.org ($99 a year), in descending order of grade.

What is the best-value registered agent in Maine?

Mainstay Filing: $149 per year for an agent that goes wherever the company goes, plus free scans of the first three government mailings each year.

More from us

Source notes

  1. Maine Secretary of State (verified August 2026)
  2. Maine Secretary of State (verified August 2026)
  3. Maine report due date (verified August 2026)
  4. 31 M.R.S. sec. 1531 (verified August 2026)
  5. Maine formation fee: Filing fee, official source (verified October 2026)
  6. Maine registered agent statute (verified October 2026)
  7. Pulled November 12, 2026: Mainstay Filing, Maine service page
  8. Pulled November 12, 2026: Maine Registered Agent.co, pricing and service pages
  9. Pulled November 12, 2026: ME Registered Agent.org, pricing and service pages