How to Start an LLC in Maine, From Name Check to MLLC-6

| Updated July 22, 2026

Anyone working out how to start an LLC in Maine as of 2026 hits the same surprise: there’s no form here called Articles of Organization. Maine’s document is the Certificate of Formation. The Secretary of State’s LLC forms page says to complete it on screen, print it, and mail it with $175. Standard filings then sit in a queue measured in weeks, not minutes.

Maine LLC Formation in 2026: The Essentials Before You Mail Form MLLC-6

  • Filing office: Maine Secretary of State, Division of Corporations, UCC and Commissions, Augusta.
  • Document: Form MLLC-6, the Certificate of Formation, which is Maine’s equivalent of the Articles of Organization.
  • Filing fee: $175, paid when the form goes in the mail.
  • Processing: 40 to 55 business days standard, $50 for next-business-day processing, or $100 for same-business-day processing.
  • Registered agent: required, commercial or noncommercial, with a physical Maine address.
  • LLC agreement: required by Maine statute, kept internal, and never filed with the state.
  • Every year after: $85 annual report due June 1, with a $50 late penalty.
  • Who this covers: anyone organizing a new LLC in Maine, including out-of-state owners. Where the business actually operates determines where else it must register.
  • Contacts: Corporate Name Search and Annual Reports Online run through Interactive Corporate Services; 101 State House Station, Augusta, ME 04333-0101; (207) 624-7752.

What a Maine LLC actually gets you: pass-through tax, no entity tax, no anonymity

A Maine LLC is taxed the way the IRS classifies it, and Maine Revenue Services follows that lead. A two-member LLC is a partnership for Maine income tax, a single-member LLC is disregarded, and profit lands on the owners’ returns.

Maine levies no LLC-specific franchise, privilege, or flat entity tax. The franchise tax on the state’s books is the one Maine Revenue Services applies to financial institutions.

Worth flagging: one of the advantages of an LLC in Maine repeated online doesn’t hold up. Maine isn’t an anonymous LLC state, because the annual report has to name at least one member, manager, or other authorized person.

How to start an LLC in Maine: 6 steps to a filed Certificate of Formation

The order below follows the Maine Limited Liability Company Act, which puts one step earlier than most states do. Everything runs through the Secretary of State except the EIN.

Step 1: Clear the name in Maine’s Corporate Name Search

Maine requires the name to carry limited liability company, limited company, L.L.C., LLC, L.C., or LC. Low-profit companies can use L3C. Limited shortens to Ltd. and company to Co.

The name has to be distinguishable on the records of the Secretary of State, which covers Maine entities, foreign entities qualified here, reserved names, and assumed names. Search the Maine corporate records before you commit to a name, then check the spelling twice.

Maine Secretary of State Corporate Name Search page

Form MLLC-1 reserves a Maine LLC name for 120 days at $20. That reservation can’t be renewed, though the name can be reserved again once it lapses.

Step 2: Name a commercial or noncommercial registered agent

Maine requires every LLC to maintain a registered agent in the state continuously, and Form MLLC-6 makes you pick a lane.

A commercial registered agent is a company already on file with the Secretary of State, identified by a CRA Public Number. A noncommercial agent is someone you name directly, and the form calls for a physical Maine location with street, city, state, and ZIP. A P.O. Box won’t satisfy that block.

Owners with a Maine street address can act as their own Maine registered agent, so paying for one is a question of privacy rather than legality. It’s worth knowing which Maine registered agent services actually earn the fee first.

Step 3: Put the limited liability company agreement in place

Here’s the thing most national guides skip: in Maine the LLC agreement isn’t a nice-to-have you handle later. Maine’s formation statute says a limited liability company agreement must be entered into or otherwise existing for the LLC to be formed.

It can be signed before, at the time of, or after the Certificate of Formation goes in, and it never gets filed. Sort it out the same week you file.

Step 4: File Form MLLC-6 with the Division of Corporations, UCC and Commissions

Form MLLC-6 is the Maine certificate of formation, and the state filing fee is $175 as of 2026. Maine’s fillable forms are completed on screen, printed, and mailed with payment. The forms page lists no online route for a new domestic filing.

Maine LLC Certificate of Formation Form MLLC-6

Regular mail goes to 101 State House Station, Augusta, ME 04333-0101. FedEx and UPS deliveries go to 6 E. Chestnut Street, 5th Floor, Augusta, ME 04330.

Check the two boxes on the form before signing: one marks a professional limited liability company, the other a low-profit company using the L3C designator.

Field Timing Note Aaron Kra’s Maine Filing Timeline Advice

The Maine timeline is what I end up explaining most often. I’ve watched a client mail Form MLLC-6 in early March and wait until well into May for the approved certificate, which wrecked a lease signing.

Maine sells the fix outright: $50 buys next-business-day processing, while $100 buys same-business-day processing. If a date on your calendar depends on that LLC existing, I would pay the $50.

Step 5: Get the EIN once the filing is accepted

An employer identification number comes from the IRS at no cost, and every multi-member LLC needs one. Single-member LLCs need one once they hire or elect corporate taxation.

Maine’s queue makes the timing matter. Applying before the certificate comes back can leave the EIN attached to a name the state hasn’t approved, so apply for the EIN behind your Maine LLC once the filing clears.

Step 6: Open the business bank account

A Maine bank wants three things at the counter: the filed certificate, the EIN letter, and the LLC agreement. That third one catches single-member owners out.

Keeping the business bank account separate from personal money is what holds the liability shield together if anyone tests it.

Want help with Maine’s paper filing?

Let Bizee handle the Certificate of Formation paperwork.

Bizee can prepare and submit your Maine formation documents, giving you a simpler route through the state’s mail-based filing process.

Checking the fine print? Read our Bizee breakdown .

The Maine limited liability company agreement your formation depends on

Maine’s term for the operating agreement is the limited liability company agreement, and the statute treats it as part of forming. That’s the piece most Maine LLC operating agreement searches circle without finding a straight answer.

The document stays internal. It settles what Maine’s default rules would otherwise decide: how profits split, who binds the company, what happens when a member leaves, and who manages.

Single-member owners aren’t exempt. Two clauses earn their keep: the transfer restriction that stops an interest landing with a stranger, and the deadlock provision for a 50/50 split. What a Maine LLC agreement needs to cover has the rest.

Field Legal Reminder Aaron Kra’s Operating Agreement Rule

Maine is where I stop clients mid-sentence when they say they’ll write the operating agreement later. The statute ties formation itself to having that agreement in place, so “later” is an odd position to defend.

I’ve watched a two-member Maine LLC spend more fighting over an undocumented profit split than the entire formation cost.

I recommend writing the operating agreement during the same week you mail Form MLLC-6.

How long a Maine LLC takes: 40 to 55 business days, or pay to skip the queue

The honest answer to how long does it take to get an LLC in Maine is longer than anyone expects. The Secretary of State lists processing at 40 to 55 business days as of 2026, roughly two to three calendar months. Two paid options exist, each charged per entity.

Service level What Maine promises Extra fee
Standard 40 to 55 business days $0
24-hour expedited Next business day $50
Immediate expedited Same business day $100

Mail time sits outside those windows. Anyone with a lease or a loan closing tied to the entity should check the current Maine filing turnaround first.

What a Maine LLC costs: $175 to file, $85 a year to keep

The Maine LLC cost that matters at formation is $175, paid once when Form MLLC-6 goes in. After that, the recurring number is $85 a year for the annual report.

Expedite fees, name reservation, and registered agent pricing sit in the full breakdown of Maine LLC costs.

Bottom line: nobody forms a Maine LLC for free. The $175 belongs to the state and can’t be waived, so what’s free is the labor you do yourself. Maine LLC formation services charge a markup to fill in the same form, and a side-by-side look at Maine formation providers shows what each one adds.

The Maine annual report: $85, due June 1, and the $50 late penalty

Every Maine LLC files an annual report with the Secretary of State, and so does every foreign LLC authorized here. The window opens January 1 and closes June 1, with the first report due the year after formation.

Domestic LLCs pay $85. Foreign LLCs pay $150. Miss the date and Maine adds a $50 late penalty on top, and continued silence puts the entity’s standing at risk.

No separate renewal exists. Searches for a Maine LLC annual report renewal are circling this one filing, and the step-by-step for the Maine annual report covers the online route.

Maine LLC taxes: what the state charges, and what it doesn’t

Maine follows the federal classification, so Maine LLC tax filing requirements turn on how the IRS treats the company. Default treatment is partnership for multi-member and disregarded for single-member.

Elect corporate taxation and Maine’s corporate income tax applies on Form 1120ME, graduated from 3.5% to 8.93% of Maine net income as of 2026.

One catch trips up LLCs with owners outside the state. A pass-through with Maine-source income and nonresident members must withhold 7.15% of each member’s distributive share, or 8.93% for a C corporation member. That runs through the Maine Tax Portal.

The Maine filing mistakes that send Form MLLC-6 back

Rejected paperwork comes from a short list, and a Maine LLC filing rarely fails for a complicated reason.

  • Hunting for Articles of Organization: Maine’s domestic LLC form isn’t titled that.
  • Looking for a corporation commission: corporate filings sit with the Secretary of State’s Division of Corporations, UCC and Commissions.
  • Listing a P.O. Box for a noncommercial agent: the form wants a physical Maine street address.
  • Assuming the LLC exists the day it’s mailed: it exists when the filing is accepted.
  • Treating the franchise tax as an LLC tax: it reaches financial institutions, not a general contractor in Lewiston.
Field Filing Warning Aaron Kra’s Registered Agent Address Check

The rejection I see most in Maine has nothing to do with the business name. Someone selects “noncommercial registered agent” on Form MLLC-6, then enters a P.O. Box in the address block because that is where the mail goes.

The filing then bounces after spending weeks in the queue, even though the agent has already consented to serve under 5 M.R.S. 105.2.
My final check: I read that entire address block out loud before the envelope goes in the mail.

Maine LLC questions, from Form MLLC-6 to the June 1 report

These come up once the outline is clear. Answers reflect Maine practice as of 2026.

Does Maine use Articles of Organization or a Certificate of Formation?

Certificate of Formation, on Form MLLC-6. National guides say Articles of Organization out of habit, which sends people hunting a form Maine doesn’t publish.

Can I be my own registered agent in Maine?

Yes, with a physical Maine street address and availability during business hours. You’d be listed as a noncommercial registered agent, and the trade-off is a public address on the record.

Can you start a Maine LLC for free?

No. The $175 belongs to the Secretary of State and no service waives it. A free Maine LLC offer means free labor with the state fee passed through, and filing Form MLLC-6 yourself is cheapest.

Is there a Maine LLC renewal, or is the annual report it?

The annual report is it. Maine has no separate renewal filing.

Does a single-member Maine LLC still need an LLC agreement?

Yes. Maine’s requirement carves out no exception for one-member companies. A short document recording who owns what, how the company runs, and what happens if the owner sells will do.

What is a Maine PLLC, and who has to form one?

A professional limited liability company under 13 M.R.S. Chapter 22-A, for licensed services. Form MLLC-6 carries a checkbox for it, with examples including accountants, attorneys, dentists, registered nurses, and veterinarians.

Can a Maine LLC be taxed as an S corp?

Maine follows the federal election, so an LLC that qualifies with the IRS gets the same treatment for Maine income tax. Whether it saves money depends on payroll rather than on Maine law.

What does an out-of-state LLC file to do business in Maine?

Form MLLC-12, the Statement of Foreign Qualification to Conduct Activities, at $250 as of 2026. It needs a certificate of existence from the home state dated within 90 days, and the foreign annual report runs $150.

Can you form a Maine LLC if you don’t live in Maine?

Nothing in Maine law requires an owner to live here. The requirement is a registered agent with a Maine address, maintained continuously. Running the business from another state usually means registering there as well.

Research and References

Form Your Maine LLC with ZenBusiness

ZenBusiness helps you check your business name, prepare Form MLLC-6, and complete your Maine LLC filing with confidence.

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  • Aaron Kra Boost Suite

    Aaron Kra, JD, Founder and Editor-in-Chief of Boost Suite, is a recognized authority on LLC formation, registered agents, and small-business compliance.
    A graduate of the University of Texas School of Law (ABA-accredited), he founded Boost Suite to turn complex state rules into plain-English, step-by-step guidance. For 9+ years, he has helped entrepreneurs with entity selection, registered-agent requirements, and multi-state compliance, and he leads the site’s legal/tax review.

    Previously, Aaron practiced business law in Austin (LLC/PLLC formations, conversions/domestications, UCC-1 filings, multi-state registrations) and completed a year-long secondment with a national registered-agent provider, working with filing clerks in 25+ states. At Boost Suite, he checks each guide with official US sources and updates everything when necessary. Read more about Aaron Kra and Boost Suite.

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