How to Form an LLC in Maine (2026)

1. 1Choose a name for your LLC and verify availability by searching the Maine Secretary of State business entity database. Your name must include "Limited Liability Company," "LLC," or "L.L.C."
2. 2Appoint a registered agent with a physical street address in Maine.
3. 3File a Certificate of Formation with the Maine Secretary of State. The filing fee is $175. Online filing is available.
4. 4Obtain an EIN (Employer Identification Number) from the IRS at no cost.
5. 5Create an operating agreement. Maine is one of five states that legally requires an operating agreement. It can be oral, written, or implied, but a written agreement is strongly recommended.
6. 6Open a business bank account with your Certificate of Formation, EIN, and operating agreement.
7. 7Obtain any required business licenses and permits from your municipality.
8. 8File your first annual report by June 1. The fee is $85.

• ✓Obtain an EIN from the IRS (free, apply online at irs.gov)
• ✓Open a dedicated business bank account
• ✓Register for Maine state taxes with Maine Revenue Services
• ✓Get business insurance (general liability at minimum)
• ✓Set up an accounting system to track income and expenses
• ✓Apply for any municipal business licenses or permits
• ✓File your first annual report ($85) by June 1

Your Maine LLC name must contain "Limited Liability Company," "LLC," or "L.L.C." Restricted words like "Bank," "Insurance," or "Trust" require additional licensing. The name must be distinguishable from existing business entities in Maine. Maine uses "Certificate of Formation" rather than "Articles of Organization."

Maine LLCs are pass-through entities by default. Members pay Maine individual income tax on their share of profits (rates from 5.8% to 7.15%). Maine does not impose a franchise tax on LLCs. The annual report costs $85.

LLC vs. other structures in Maine

Maine has higher-than-average costs with a $175 filing fee and $85/year annual report. Maine is one of five states that legally requires an operating agreement, so this is non-negotiable. For high-income LLCs, the 7.15% top tax rate is significant.

• •File an annual report by June 1 each year — $85 fee
• •Maintain a registered agent with a physical address in Maine at all times
• •Keep your operating agreement current — this is a legal requirement in Maine
• •File Maine state income tax returns for all members receiving pass-through income
• •Renew any municipal business licenses or permits as required

Maine has higher-than-average LLC costs. Weigh the total cost of formation and annual maintenance against your expected revenue before deciding.

In general, you should form your LLC in the state where you physically live and conduct business. Forming in a "tax-friendly" state like Wyoming, Delaware, or Nevada sounds appealing, but if you operate in Maine, you will still need to register as a foreign LLC there — paying fees in both states.

An LLC is almost always a better choice than operating as a sole proprietorship because of the personal liability protection it provides. However, if your LLC is highly profitable, you should talk to a CPA about electing S-Corp tax treatment to potentially reduce your self-employment tax burden.

What Maine LLC Owners Need to Know

• •Maine is one of five states that legally requires an operating agreement (can be oral, written, or implied)
• •Maine uses a Certificate of Formation rather than Articles of Organization
• •Annual report is $85 and due on June 1 each year

Official Maine Resources

• Maine Secretary of State — Bureau of Corporations
• Maine Online Corporate Filing