How to Start an LLC in Maine (2026): Step-by-Step Guide

Published: June 2026 · Updated for the 2026 tax year

Most states have turned LLC formation into a five-minute online checkout. Maine hasn't. Here, the $175 Certificate of Formation is a PDF you print, sign in ink, and mail to Augusta with a check — there's no online formation at all — and then you wait. After that comes an $85 Annual Report due every June 1, with real teeth behind the deadline. This guide walks through every step, what a Maine LLC actually costs year by year, how to form one from outside the US despite the mail-only process, and the June 1 clock that quietly dissolves LLCs that ignore it.

Form your Maine LLC for free with Jupid. We prepare and file your Certificate of Formation — you pay only the state's $175 filing fee, with no service markup. Start your Maine LLC →

A note from Slava

I'm Slava, co-founder and CEO of Jupid. Before this I co-founded and scaled an AI-powered accounting platform to around $30M in revenue and more than 100,000 business users — the kind of company that ends up filing a lot of paperwork in a lot of states and watching customers trip over the same potholes again and again.

Maine's pothole isn't a hidden fee — it's the process itself. In 2026, almost every state lets you form an LLC online in minutes. Maine still makes you print a form, sign it by hand, and mail it to Augusta with a paper check or a credit-card voucher, and then the state's own posted processing time is 40 to 55 business days. Most "how to start an LLC in Maine" articles either skip that entirely or repeat a wrong "5–7 days" figure they copied from somewhere. They also tend to get the late fee wrong (you'll see a scary "$400" thrown around — that's for corporations, not LLCs), and almost none of them tell a founder living in another country what mailing a paper filing across borders actually involves.

So this guide does the things the others skip: it's honest about the mail-only process and the real wait, it adds up the cost over time, it spells out the non-resident path, and it hands you a dated checklist so the June 1 Annual Report deadline doesn't catch you. Everything here is current for 2026, with links to the official sources so you can verify before you file.

Maine LLC at a glance

Sources: Maine Secretary of State — Limited Liability Company Forms (MLLC-6 $175, MLLC-13 $85, 40–55-day processing, BOI note), 31 MRSA §1680 — filing fees and penalties, Maine Revenue Services — Individual Income Tax (1040ME).

Should you actually form your LLC in Maine?

If you live in Maine and run your business from Maine, you should almost certainly form your LLC in Maine. The popular advice to "form in Wyoming or Delaware instead" doesn't help you here: an out-of-state LLC that does business in Maine has to register as a foreign LLC with the Secretary of State (a $250 Statement of Foreign Qualification, plus a $150 foreign annual report), which means you owe Maine fees anyway — plus a second set of fees and a registered agent in the other state. You end up paying more for more paperwork, and you've added a state to keep compliant.

Forming elsewhere makes sense in a narrower set of cases: you genuinely don't operate in Maine (no office, employees, or significant activity here), you're a non-resident with no US footprint at all, or you have a specific outside-investor reason that points to Delaware. If you're weighing it, our best state to form an LLC tool walks through the trade-offs, and our Wyoming LLC guide covers the non-resident case in detail.

For everyone else: Maine it is. Here's how — and the headline you need to absorb before you start is that you'll be mailing a paper form, not clicking through a website.

How to start an LLC in Maine, step by step

A note up front that shapes every other step: Maine has no online LLC formation. The Certificate of Formation is a PDF you fill in, print, sign, and physically mail to the Secretary of State. Plan around that — especially the 40-to-55-business-day wait — rather than expecting an instant approval.

1. Choose and check your LLC name

Your name has to include "Limited Liability Company," "Limited Company," or an abbreviation — "LLC," "L.L.C.," "LC," or "L.C." (and "L3C" for a low-profit LLC) — and it has to be distinguishable from every other entity on the Secretary of State's records. Search the Maine corporate name lookup before you get attached to anything. Need ideas or want to check a few options at once? Our Maine business name generator is built for exactly that. If you want to lock a name in before you're ready to file, an Application for Reservation of Name (Form MLLC-1) holds it for 120 days for $20 — note that the reservation is non-renewable, so once it lapses the name is open again.

2. Appoint a registered agent in Maine

Every Maine LLC needs a registered agent to accept legal papers and official notices on its behalf, and Maine follows the Model Registered Agents Act, which splits agents into two types. A commercial registered agent is a company listed on the Secretary of State's registry (identified by a public CRA number). A noncommercial registered agent is an individual or entity with a physical Maine street address — a P.O. box won't do. Either way, the agent has to consent to the appointment, and the agent's name and address go on the public Certificate of Formation. If you don't have a Maine address — because you live out of state or abroad — you'll use a commercial registered agent, typically $50–$150 a year. (If you ever need to change your agent later, that's Form CLKRA-3, $35.)

3. File the Certificate of Formation (Form MLLC-6) by mail

This is the step that creates your LLC, and it's the step Maine refuses to put online. Download Form MLLC-6, complete it on-screen, print it, sign it in ink, and mail it to the Secretary of State with the $175 fee. Payment is a check or money order payable to "Maine Secretary of State," or a credit-card payment voucher mailed alongside the form. Use the right address for your carrier: by USPS, Secretary of State, Division of Corporations, UCC and Commissions, 101 State House Station, Augusta, ME 04333-0101; by FedEx or UPS, 6 E. Chestnut St., 5th Floor, Augusta, ME 04330.

Standard processing is 40 to 55 business days — that's the state's own posted figure, roughly eight to eleven weeks, not the "5–7 days" some guides repeat. If you can't wait, Maine offers expedited service for an extra fee mailed with the form: $50 for 24-hour (next-business-day) handling or $100 for immediate (same-business-day) handling. Only one expedite fee applies per entity even if you file several documents at once. Once it's approved, keep the stamped Certificate — your bank will ask for it.

4. Write an operating agreement

Maine does not legally require an operating agreement, and you never file it with the state — but you should have one anyway. It sets out ownership percentages, how profits are split, who can make decisions, and what happens if a member leaves. Maine's LLC Act (Title 31, Chapter 21) supplies default rules if you stay silent; an operating agreement lets you override them. Even a single-member LLC should have one — banks, the IRS, and any future partner will expect to see it, and it's part of how you keep the liability shield intact.

5. Get your EIN from the IRS

An EIN is your LLC's federal tax ID, and you need it to open a bank account, hire anyone, and file taxes. It's free. Apply at irs.gov after your Certificate of Formation is approved — if you have an SSN or ITIN, the online application takes a few minutes. If you don't (common for non-resident owners), file Form SS-4 by fax, mail, or the IRS international phone line; see the non-resident section below. Never pay a third party for the EIN itself — the number is always free from the IRS.

6. Register for Maine taxes and any local licenses

Forming the LLC doesn't cover your tax obligations. If you sell taxable tangible goods or certain services with Maine nexus, register with Maine Revenue Services for sales/use tax — Maine's rate is 5.5% statewide with no local sales tax, and the economic-nexus threshold is $100,000 in Maine sales. If you'll hire employees, register for Maine income-tax withholding and unemployment insurance with the Maine Department of Labor. Maine has no statewide general business license, but some municipalities require local licenses depending on what you do — check the town where you operate. Any professional or industry license you'd need as a sole proprietor, you still need as an LLC.

7. Calendar the Annual Report — $85, due June 1

This is the recurring obligation Maine cares about. Every Maine LLC files an Annual Report (Form MLLC-13) by June 1 each year for $85. Your first one is due June 1 of the year following the calendar year you formed — so an LLC formed in 2026 files its first report by June 1, 2027. Unlike formation, this one you can file online (the Secretary of State's annual-reports system takes Visa, Mastercard, or Discover) or on paper. The state does not mail you a paper reminder — at most it emails one if you keep an email address on file — so the deadline is yours to track. More on the consequences of missing it below.

What a Maine LLC really costs, year by year

Most guides quote "$175" and stop. Here's the fuller picture — and the good news is that Maine has no franchise tax and no entity-level LLC tax, so the recurring cost is genuinely low once you're formed.

Year one

Every following year

No double-fee trap, but a real deadline. Unlike states that charge a franchise tax in year one, Maine asks for nothing beyond the $175 in your first year — your first Annual Report isn't due until June 1 of the following year. The risk isn't a surprise bill; it's forgetting the recurring June 1 date. Miss it and you owe a $50 penalty on top of the $85 (note: that's the LLC penalty under 31 MRSA §1680 — the "$400 non-negotiable late fee" you may read about applies to corporations, LPs, and LLPs, not LLCs). Keep ignoring it and the Secretary of State will administratively dissolve your LLC, after which reinstatement costs $150 — far more than the $85 you skipped.

DIY versus a formation service versus Jupid. Doing it yourself costs the $175 state fee and your time — printing, signing, mailing, and waiting out the 40–55 days. A formation service charges $0–$300 on top of the state fee to handle the paperwork and mailing for you (the "$0" packages still pass through the $175 and then upsell a registered agent and a "compliance" subscription). Jupid forms your Maine LLC for free — you pay only the state filing fee — and then handles the bookkeeping and tax filings afterward, which is where most of the ongoing cost and hassle actually lives. To model the annual numbers for your situation, use our Maine LLC annual cost calculator.

Forming a Maine LLC as a non-resident or foreign founder

You can own a Maine LLC without being a US citizen or resident — Maine imposes no residency requirement on members or managers. The friction is the mail-only process, which hits founders abroad harder than anyone, plus the usual EIN, bank account, and tax-filing steps.

Registered agent — unavoidable. With no Maine address, you must appoint a commercial registered agent (one listed on the Secretary of State's CRA registry). It needs a physical Maine street address, not a P.O. box. Budget around $50–$150 a year. The agent's name and address appear on the public Certificate of Formation.

The mail-only filing is the real hurdle. A founder overseas has to get a paper Form MLLC-6, sign it in ink, and mail it to Augusta with a US-dollar check or a credit-card voucher — then wait out the 40–55 business days, or pay $50/$100 to expedite. International mail adds weeks on its own. In practice, the clean workaround is to have a registered-agent or formation service file on your behalf; that's often the single biggest reason a non-resident pays for a service rather than going DIY.

Getting an EIN without an SSN. The IRS online EIN tool requires the responsible party to have an SSN or ITIN, so foreign founders generally can't use it. Instead, file Form SS-4: on the line asking for the responsible party's SSN/ITIN/EIN, write "Foreign" — don't invent a number. Submit it by fax or mail, or call the IRS international EIN line (it's not toll-free), where someone outside the US can get the number over the phone. Check the current Form SS-4 instructions for the right fax and phone numbers, since the IRS changes them. The EIN is free.

ITIN. An ITIN (Form W-7) is a tax ID for individuals who aren't eligible for an SSN. Your LLC gets an EIN; you as an owner may separately need an ITIN if you end up with a personal US filing obligation. It's not required just to own the LLC — it's required when you have to file.

The Form 5472 obligation — don't skip this. A single-member LLC owned by a non-US person is a "disregarded entity" that generally must file Form 5472 along with a pro-forma Form 1120 every year, reporting transactions between the LLC and its foreign owner — even with zero income. The penalty for missing it is $25,000, and it can't be e-filed by a disregarded entity (paper or fax only). Almost no Maine LLC guide mentions this; build it into your annual calendar from day one. For a US-resident owner, by contrast, a single-member LLC is simply reported on Schedule C with your personal return — don't assume the non-resident rules apply to you, or vice versa.

Maine tax. If your LLC has Maine-source income and out-of-state members, Maine requires the pass-through entity to withhold 7.15% of each nonresident member's Maine-source distributive income (8.93% if the member is a C corporation), reported on Form 941P-ME, unless the member opts out by affidavit or the LLC files a composite return. Maine does not have an elective pass-through-entity (PTE) tax for the SALT-cap workaround — don't let a generic guide tell you otherwise. A pure online business with no Maine-source income generally owes none of this in Maine.

US bank account. Most US banks want the owner physically present to open a business account, along with the EIN confirmation letter, the filed Certificate of Formation, the operating agreement, and a passport. Several fintech business-banking platforms onboard non-resident-owned US LLCs remotely — eligibility and policies change, so check current terms before you rely on any of them. You'll typically need a US business address, which can be your registered agent or a virtual office depending on the bank.

Registered agents and the Corporate Transparency Act (BOI)

Your registered agent is the person or company designated to receive lawsuits and official notices for the LLC. In Maine it has to be either a commercial registered agent on the Secretary of State's registry or a noncommercial agent with a physical Maine street address — no P.O. boxes — and the agent must consent to the appointment. Because the agent's name and address are public on the Certificate of Formation, plenty of Maine residents hire a commercial agent purely to keep a home address off the record, and everyone without a Maine address has to use one.

On the federal beneficial-ownership side: under the Corporate Transparency Act, LLCs were originally required to file a Beneficial Ownership Information (BOI) report with FinCEN. That changed. FinCEN's interim final rule, published in March 2025, redefined a "reporting company" to mean only entities formed under foreign law that register to do business in a US state. As of early 2026, that means a Maine-formed LLC — even one with foreign owners — has no BOI filing obligation. The Maine Secretary of State posts this exact language on its LLC forms page. FinCEN has said it intends to finalize the rule, and a final rule is expected during 2026, so this could shift; check fincen.gov/boi before you assume one way or the other. (If you register a foreign-formed entity to do business in Maine, that entity does still have its own FinCEN obligations for its non-US owners.)

Your first 30, 60, and 90 days

The clock that matters for compliance is the June 1 Annual Report — but it doesn't start until the year after you form, so your first 90 days are mostly about getting operational. Note that with a 40–55-business-day standard processing time, your Certificate of Formation may not even be approved within the first 60 days unless you expedited it.

Days 1–7 (after approval)

• Get your EIN from the IRS (free; online if you have an SSN/ITIN, otherwise by fax, mail, or phone).
• Adopt your operating agreement — not required by Maine law, but keep it with your records.
• Check your BOI status. As of early 2026 a domestic Maine LLC has no FinCEN filing to make; re-verify at fincen.gov/boi.

Days 1–30 (after approval)

• Open a US business bank account (EIN letter, filed Certificate of Formation, operating agreement, ID). Separate finances from day one — it preserves the liability shield.
• Register with Maine Revenue Services for sales/use tax if you sell taxable goods or services with Maine nexus.
• Register for Maine income-tax withholding and unemployment insurance if you'll hire employees.
• Check whether your town requires a local business license, and get any professional or industry licenses your work requires.
• Look into business insurance — general liability now, workers' comp once you have employees.

Days 1–60

• Set up bookkeeping and a way to track Maine-source income, especially if you have out-of-state members (the 7.15% nonresident-withholding rule may apply).
• If you're a foreign-owned single-member LLC, calendar the annual Form 5472 + pro-forma 1120 filing ($25,000 penalty for missing it).

Every year — hard deadline: June 1

• File the Annual Report (Form MLLC-13), $85, online or by paper. Your first one is due June 1 of the year after you formed. Miss it and it's a $50 penalty plus, eventually, administrative dissolution. The state won't remind you — set your own calendar alert.

Common mistakes with Maine LLCs

Assuming you can form online. Why it hurts: you lose time hunting for a filing portal that doesn't exist, then get blindsided by the 40–55-business-day wait when you finally mail the paper form. Fix: plan for a mailed Form MLLC-6 from the start; if you're on a deadline, pay $50 (24-hour) or $100 (same-day) to expedite, and budget mailing time on top.

Missing the June 1 Annual Report. Why it hurts: a $50 penalty on top of the $85, and continued non-filing leads to administrative dissolution — after which reinstatement costs $150 and your liability shield is in question for the gap. Fix: calendar June 1 every year (and remember the first one is due the year after you form); the state sends no paper reminder.

Believing the "$400 late fee" myth. Why it hurts: it scares founders into overpaying rush services or assuming the worst. Fix: know the real number — the LLC late-filing penalty is $50, not $400. The $400 figure applies to corporations, LPs, and LLPs, not LLCs.

Treating Maine like a no-tax state because there's no franchise tax. Why it hurts: Maine has no franchise tax, but it does tax LLC profits at the owner's personal rate (up to 7.15%), and multi-member LLCs with out-of-state owners face 7.15% nonresident withholding on Maine-source income. Fix: track Maine-source income and plan for the pass-through tax and any withholding from day one.

Listing a P.O. box or no-consent agent. Why it hurts: a noncommercial registered agent needs a physical Maine street address and has to consent — get either wrong and the filing is rejected, costing you another 40–55-day cycle. Fix: line up a consenting commercial or noncommercial agent with a real Maine street address before you mail the form.

How Jupid helps

Jupid forms your Maine LLC for free — you pay only the state's $175 filing fee, with no service markup and no surprise "compliance" subscription. Because Maine is mail-only, having someone handle the paper Form MLLC-6 is genuinely useful here, not just a convenience. After that, Jupid is your AI accountant, working in WhatsApp and iMessage the same way you already text. It connects to your business bank account, automatically categorizes your transactions (around 95.9% accuracy), keeps your deductions organized, and prepares your tax filings with CPA review before anything is submitted. For a Maine LLC, that's the part that actually takes time year after year — the $85 you'll just pay, but the June 1 reminder, the pass-through income-tax math, any nonresident withholding, and clean books to back it all up are work, and that's the work Jupid does for you. Start your Maine LLC free with Jupid →

Frequently asked questions

How much does it cost to start an LLC in Maine in 2026? The Certificate of Formation (Form MLLC-6) costs $175 — one of the higher filing fees in the country. There's no separate first-year state fee, so the practical year-one minimum is $175 plus a registered agent (roughly $0–$150) if you need one. The $85 Annual Report doesn't start until June 1 of the year after you form.

Can I form a Maine LLC online? No. Maine has no online LLC formation. The Certificate of Formation (Form MLLC-6) is a PDF you print, sign in ink, and mail to the Secretary of State in Augusta with payment. You can pay $50 for 24-hour expedited service or $100 for same-day, but it's still a mailed paper filing. (The annual report, by contrast, can be filed online once your LLC exists.)

How long does it take to form an LLC in Maine? The Secretary of State posts a standard processing time of 40 to 55 business days for corporate filings — roughly eight to eleven weeks. That's far longer than most states. To cut the wait, mail the form with an extra $50 for 24-hour (next-business-day) service or $100 for immediate (same-business-day) service.

When is the Maine LLC Annual Report due, and what does it cost? Every Maine LLC files an Annual Report by June 1 each year for $85 (Form MLLC-13, which you can file online). Your first report is due June 1 of the year following formation. The state does not mail a reminder. File late and you owe a $50 penalty on top of the $85, and continued non-filing leads to administrative dissolution.

Do I need a registered agent for a Maine LLC? Yes. Maine requires every LLC to have a registered agent — either a commercial registered agent on the Secretary of State's registry or a noncommercial agent (an individual or entity) with a physical Maine street address. P.O. boxes don't qualify, and the agent has to consent. If you don't have a Maine address, you'll use a commercial registered agent, typically $50–$150 a year.

Can a non-US resident own a Maine LLC? Yes. Maine has no citizenship or residency requirement for members or managers. You'll need a commercial registered agent in Maine, an EIN (which you can get without an SSN via Form SS-4), and a way to handle a mailed paper filing from abroad. A foreign-owned single-member LLC must also file Form 5472 with a pro-forma Form 1120 every year, or face a $25,000 penalty.

Official sources

• Maine Secretary of State — Limited Liability Company Forms (Form MLLC-6 $175, MLLC-1 $20, MLLC-13 $85, 40–55-day processing, BOI note)
• Maine Secretary of State — Certificate of Formation (Form MLLC-6) PDF (mail-only, $50/$100 expedite, Augusta address)
• Maine Secretary of State — Filing Requirement Reminders ($85 annual report, June 1 deadline, no mailed reminder, administrative dissolution)
• Maine Secretary of State — Annual Report / Online Services
• 31 MRSA §1680 — filing and copying fees; penalties ($175 formation, $85 report, $50 late, $150 reinstatement, $20 reservation, $250 foreign qualification)
• 31 MRSA §1667 — failure to file annual report; administrative dissolution · Title 31, Ch. 21 — Maine LLC Act
• 5 MRSA, Ch. 6-A — Model Registered Agents Act (commercial vs noncommercial agents)
• Maine Revenue Services — Individual Income Tax (1040ME) · Pass-through Entity Withholding FAQ · Sales & Use Tax FAQ
• IRS — get an EIN · Instructions for Form SS-4 · About Form 5472
• FinCEN — Beneficial Ownership Information
• Related on Jupid: Maine LLC formation · Maine LLC annual cost calculator · Maine business name generator · best state to form an LLC · New York LLC guide · Wyoming LLC guide

This guide is general information, not legal or tax advice. Fees, deadlines, and thresholds change — verify with the official sources above before you file.

Last updated: June 2026.