How to form an LLC in Maine

Starting an LLC in Maine is straightforward if you follow the state's rules closely. Maine requires three essentials under the Maine Limited Liability Company Act: a proper name, a registered agent with a Maine street address, and a Certificate of Formation filed with the Secretary of State. Everything else is recommended but not required by law.

The costs are reasonable compared to many other states. Maine charges $175 to file your Certificate of Formation, and $85 every year for required reports due June 1. If they reject your filing or you miss deadlines, you'll face penalties and potential dissolution, so getting the details right saves you money and headaches.

Maine LLC formation requirements

Maine establishes straightforward formation requirements under the Maine Limited Liability Company Act, though the mail-only filing process requires careful attention to documentation accuracy.

Core Requirement Maine Rule Mandatory?
LLC Name Must be distinguishable and include "Limited Liability Company," "L.L.C.," or "LLC" Yes
Registered Agent Individual (18+) or business with a physical Maine address Yes
Certificate of Formation File with Secretary of State; $175 state fee Yes
Operating Agreement Internal contract; not filed with the state No, but strongly recommended

Certificate of Formation filing fees

Maine requires all LLC formations to be submitted by mail, as the state doesn't offer online filing for Certificate of Formation documents.

Filing Method State Fee Submission Channel Typical Processing Time
Standard mail $175 Mail to 101 State House Station, Augusta, ME 04333-0101 15-20 business days
Expedited 24-hour $225 ($175 + $50) Same mailing address 1 business day after receipt

Expedited processing provides significant time savings for urgent formations, though you still must account for mail delivery time to the Secretary of State's office in Augusta.

Step-by-step LLC formation process

Step 1: Choose your LLC name

Maine requires LLC names to include "Limited Liability Company," "L.L.C.," or "LLC" and be distinguishable from all existing businesses in the state database. Search the Maine Secretary of State's corporate database to verify availability before filing.

Avoid restricted terms like "bank," "insurance," "attorney," or "physician" without proper professional licensing. Words suggesting government affiliation will result in automatic rejection.

Maine doesn't offer name reservation services, so ensure you're ready to file immediately upon confirming availability. If you plan to operate under a different trade name, you can register an assumed name for $125 after formation.

Step 2: Appoint a registered agent

Maine law mandates that every LLC maintain a registered agent with a physical street address in Maine to receive legal documents, state correspondence, and service of process. P.O. boxes are prohibited under state regulations.

Your registered agent must be:

  • A Maine resident aged 18 or older, or
  • A business entity authorized to provide registered agent services in Maine
  • Available during normal business hours to accept documents
  • Willing to provide written consent to serve

You can serve as your own registered agent at no cost, but this puts your address on public record and requires your availability during business hours. Professional registered agent services typically cost $100-$300 annually and provide privacy protection, guaranteed availability, and professional document handling.

Failing to maintain a registered agent can result in administrative dissolution, loss of good standing, and personal liability exposure for members.

Step 3: File Certificate of Formation

The Certificate of Formation (Form MLLC-6) legally establishes your Maine LLC. Complete all required sections, including:

  • LLC's exact name with proper designator
  • Principal office address (Maine location preferred)
  • Registered agent's name and Maine street address
  • Business purpose (general purpose acceptable)
  • Organizer's name, address, and signature

Mail the completed form with a $175 filing fee to the Maine Secretary of State, 101 State House Station, Augusta, ME 04333-0101

Include a check or money order payable to "Secretary of State." Processing takes 15-20 business days for standard filings, or one business day for expedited service ($225 total).

Step 4: Create an Operating Agreement

While Maine doesn't require an Operating Agreement, creating one provides essential legal and operational protections. This internal document defines ownership structure, management authority, and operational procedures without state filing requirements.

Critical provisions include:

  • Member ownership percentages and capital contributions
  • Management structure (member-managed vs. manager-managed)
  • Voting procedures and decision-making authority
  • Profit distribution and loss allocation methods
  • Member admission and withdrawal procedures
  • Dispute resolution mechanisms and dissolution procedures

For single-member LLCs, an Operating Agreement demonstrates business separation from personal affairs, strengthening liability protection. Multi-member LLCs especially benefit from written agreements preventing costly disputes over ownership, management decisions, and financial distributions.

Step 5: Obtain required licenses and permits

Beyond LLC formation, complete federal and state registration requirements to operate legally. Obtain a free Employer Identification Number (EIN) from the IRS using Form SS-4, required for business banking, tax purposes, and hiring employees.

Maine doesn't require a general statewide business license, but industry-specific permits may be mandatory. Register for sales tax with Maine Revenue Services if selling taxable goods or services.

Check with local governments about municipal permits, zoning approvals, or health department authorizations required for your business activities. Professional services may require additional licensing through state regulatory boards.

Maine LLC ongoing compliance requirements

Maintaining your Maine LLC's good standing requires attention to several recurring obligations that preserve liability protection and legal status. This includes: 

Filing online through the Secretary of State's portal is quicker and gives you instant confirmation, but the deadline is firm.

Your tax situation depends on how you've structured things. By default, LLC profits pass through to members who report income on personal tax returns. There's no separate franchise tax unless you elect corporate taxation.

FAQs about forming an LLC in Maine

Is an operating agreement required?

No, but you'd be smart to have one. Banks, investors, and even solo entrepreneurs rely on it to establish ownership, determine profit distribution, and resolve disputes. You can write it yourself at no cost.

Can I form an LLC online in Maine?

No. Maine currently requires all Certificate of Formation filings to be submitted by mail. You can complete the PDF form on your computer, but you must print and mail it with payment.

Can I form an LLC in another state if I operate in Maine?

Yes, but you'll need to register as a foreign LLC once you "transact business" in Maine, paying both home-state and Maine fees.

Automate your Maine LLC formation filings with Discern

Discern handles Maine LLC compliance filings, providing real-time processing estimates and clear status updates. Most Discern filings are completed in minutes, eliminating the uncertainty and stress of traditional compliance management.

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Graphic image of Maine state silhouette in grey on a dark teal background with white text that says 'How to Form an LLC in Maine' positioned on the left side
Author
The Discern Team
Published Date
August 19, 2025
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