How to Register an LLC in Maine (2026 Filing Guide)
To register an LLC in Maine, you file a Certificate of Formation (Form MLLC-6) with the Maine Secretary of State’s Division of Corporations, UCC and Commissions. The filing fee is $175. Maine is one of the few remaining states with no online option for initial LLC formation; you must file by mail or in person, with expedited service available for an added $50 (next business day) or $100 (same business day). Standard processing otherwise runs several weeks. Once approved, you will still need an EIN from the IRS and a registered agent with a physical Maine address. Maine also legally requires every LLC to have an operating agreement, and you’ll file an annual report every year by June 1 for $85.
AnyWhereFormations handles this filing end to end for founders who would rather not manage state paperwork and deadlines themselves. Below is the full process if you want to understand each step, or to file it yourself.
What You Need Before You File
- A business name that is distinguishable from every other entity on record with the Maine Secretary of State and includes “limited liability company,” “LLC,” or an approved abbreviation
- A registered agent with a physical Maine street address, not a P.O. box, who consents to serve
- A completed Customer Contact Cover Letter to accompany your filing, since Maine requires this alongside the Certificate of Formation
- A written operating agreement, since Maine is one of the few states that legally requires one
- A check or money order for the $175 filing fee, since Maine does not accept online formation filings
Steps to Register a Maine LLC
1. Check name availability
Search the Maine Corporate Name Search to confirm your desired name is distinguishable from existing businesses on record under Title 31 M.R.S. Section 1508. The name must include “limited liability company” or an accepted abbreviation and cannot contain obscene language or falsely suggest a public or nonprofit affiliation. You can reserve a name for 120 days for $20 if you are not ready to file yet.
2. Appoint a registered agent
Maine requires every LLC to maintain a registered agent with a physical Maine street address, available during normal business hours to accept legal documents. This can be yourself, another Maine resident, or a commercial registered agent service, which keeps your personal address off the public record and matters most for founders who do not have a Maine address, including international founders. The agent’s consent to serve must be reflected on the Certificate of Formation itself.
3. File the Certificate of Formation
Complete Form MLLC-6 and mail it, along with a Customer Contact Cover Letter and the $175 fee, to the Secretary of State’s Augusta office, or deliver it in person. Maine does not offer an online option for initial LLC formation. You will list the LLC name, filing date, registered agent information, any low-profit (L3C) or professional LLC designation, and the signature of at least one authorized person. Standard processing commonly runs several weeks; expedited service is available for an added $50 (next business day) or $100 (same business day).
4. Adopt an operating agreement
Maine is one of the small number of states that legally requires an LLC to have an operating agreement, called a Limited Liability Company Agreement under Title 31 M.R.S. Section 1531. It can technically be written or oral, but a written version gives far better legal protection and is what banks will expect to see. Without one, Maine’s default LLC statutes govern your business instead of terms you and your members actually agreed to.
5. Get a federal EIN
Apply for an Employer Identification Number directly from the IRS at no cost. Multi-member LLCs, LLCs electing corporate tax treatment, and any LLC with employees need one; single-member LLCs benefit from having one anyway to avoid handing out a personal Social Security number. Founders without a US Social Security Number can still get an EIN by submitting Form SS-4 by fax rather than through the online IRS system.
6. Register for Maine state taxes if applicable
Register online with Maine Revenue Services if your LLC sells taxable goods or services, or has employees. Maine’s sales and use tax rate is 5.5 percent, collected from purchasers and remitted to the state. Employers also need to set up withholding, report new hires to the Maine Department of Labor, and register for unemployment insurance.
7. Open a business bank account
Keep business funds separate from personal funds to preserve your LLC’s liability protection. Banks typically ask for your Certificate of Formation, EIN confirmation, and operating agreement.
8. File your annual report
Maine requires an annual report every year by June 1, filed online or on paper through the Secretary of State’s office, for an $85 fee. Keep your LLC’s charter number on hand to access the filing. Missing the deadline by more than 60 days can result in the state administratively dissolving the LLC.
How Long Does Maine LLC Approval Take?
Because Maine only accepts formation filings by mail or in person, standard processing takes considerably longer than in states with online filing, with estimates ranging from roughly two to five weeks depending on volume. Expedited service cuts this down substantially: an added $50 gets next-business-day processing, and $100 gets same-business-day processing if you deliver or fax your documents in time.
Foreign Founders and International Applicants
Maine does not require an LLC owner or organizer to be a US citizen or Maine resident. International founders commonly use a commercial registered agent for the required in-state address and apply for an EIN by fax using Form SS-4 rather than the SSN-gated online IRS application. Maine does not offer anonymous LLC formation; member and manager names are not required on the Certificate of Formation itself, but the filing is still a public record and a registered agent’s information is always visible. AnyWhereFormations manages the registered agent and EIN setup directly for non-resident founders, and prepares the required operating agreement so the paperwork-only filing process doesn’t slow you down.
Maine’s Low-Profit LLC (L3C) and Professional LLC Options
Maine is one of a small number of states that recognizes the low-profit LLC, or L3C, a structure for organizations that significantly further a charitable or educational purpose without production of income or political activity as a significant goal. Maine also allows Professional LLCs (PLLCs) for state-licensed professionals such as accountants, attorneys, and physicians. Both require checking the relevant box and providing additional detail on the Certificate of Formation rather than filing the standard LLC form alone.
How much does it cost to register an LLC in Maine?
The state filing fee for the Certificate of Formation is $175. Add the $85 annual report fee due every year by June 1.
Can I file my Maine LLC formation online?
No. Maine’s Certificate of Formation must be filed by mail or in person; there is currently no online option for initial LLC formation, though the annual report can be filed online afterward.
Do I need a registered agent in Maine?
Yes. Every Maine LLC must maintain a registered agent with a physical Maine street address who consents to serve, listed directly on the Certificate of Formation.
Is an operating agreement required in Maine?
Yes. Maine legally requires every LLC to have an operating agreement, which can be written or oral, though a written one offers far stronger legal protection. It is not filed with the state.
Can a non-US resident form a Maine LLC?
Yes. Maine does not require LLC owners or organizers to be US citizens or Maine residents. Non-residents need a registered agent with a physical Maine address and typically apply for an EIN by fax if they do not hold a Social Security Number.
What is a Maine low-profit LLC (L3C)?
An L3C is a special LLC designation in Maine for organizations that significantly further a charitable or educational purpose, where income production and political activity cannot be a significant purpose. It is designated on the Certificate of Formation using the “L3C” suffix instead of “LLC.”
When is the Maine LLC annual report due?
Every year by June 1, for an $85 fee, filed online or on paper with the Secretary of State. Missing it by more than 60 days can lead to administrative dissolution.
File Your Maine LLC With AnyWhereFormations
AnyWhereFormations prepares and files your Certificate of Formation, sets up your registered agent, drafts your required operating agreement, and secures your EIN so your LLC is formed correctly despite Maine’s mail-only filing process. This is built for founders, including those outside the US, who want the entity in place without navigating Maine’s paperwork themselves.
