How to form a Maine LLC
$175 filing, $85 annual report, and the compliance items Pine Tree State founders miss.
Contents 10 sections
aine is on the higher end of formation friction: $175 to file, $85 annual report, and a Secretary of State system that is functional but slower than peer states. For Maine-based operators it's the obvious choice; for out-of-state founders considering Maine as a formation jurisdiction, it rarely wins on cost or speed.
Overview
For current filing fees and forms, consult the Maine Secretary of State Bureau of Corporations directly; Maine is one of the states where fee schedules shift more often than in most. The IRS LLC classification guidance explains how a Maine LLC is treated federally by default, and how Form 8832 changes that election.
File through the Maine Secretary of State at maine.gov/sos.
Filing fee and formation
- LLC filing fee: $175
- Form: Certificate of Formation (MLLC-6)
- Processing: 5–10 business days by mail (Maine is largely paper-based); expedited 24-hour service available for an additional $50, same-day for $100
- Name rules: Must contain "Limited Liability Company," "Limited Company," "L.L.C.," "LLC," "L.C.," or "LC"
Maine's online filing portal exists but the canonical filing channel for many forms is still mail. Plan for a 1–2 week window unless you pay for expedited service.
Maine's 'clerk' terminology is the clearest signal that its LLC act is its own beast. Treat Maine filings as Maine-specific work; do not port Delaware or Wyoming operating language without a Maine lawyer's eye on it.
Registered agent
"Registered agent" in Maine is called a clerk for domestic LLCs; the terminology is a Maine peculiarity. The clerk must be:
- A Maine resident (individual), or
- A commercial registered agent (CRA) authorized by the Secretary of State
P.O. boxes are not acceptable; the clerk must have a Maine street address.
Annual report
- Fee: $85
- Due: June 1 every year
- Filed via: Maine SOS annual report portal
- Late penalty: $50 after August 1; administrative dissolution follows continued non-filing
The June 1 deadline is flat; same date for everyone regardless of formation anniversary.
Taxation
- Corporate income tax: 3.5% / 7.93% / 8.33% / 8.93% bracketed
- LLC default pass-through: To members' personal Maine income tax (graduated, top 7.15%)
- Sales tax: 5.5% state, no local add-on
- Service provider tax: 6% on specified services (unusual; check if your LLC sells telecom, fabrication, or rental services)
Maine does not have a franchise tax or gross receipts tax on LLCs.
Three things founders miss
- The "clerk" terminology. Asking "who's your registered agent" at a Maine-based firm will sometimes get blank looks; use "clerk" in Maine-specific filings and documents.
- June 1 is a hard deadline. Unlike anniversary-month states, the entire Maine calendar files on the same day. Portal is slow in late May; file in April.
- Expedited service is worth paying for. The $50 upcharge for 24-hour processing compresses a 2-week wait to a single business day; for any time-sensitive formation, it pays for itself.
Filing checklist
- Reserve name (optional, $20, 120 days)
- File Certificate of Formation ($175, plus $50 for expedited)
- Appoint Maine clerk (registered agent)
- Obtain EIN from IRS
- Register with Maine Revenue Services if selling taxable goods/services
- Calendar June 1 annual report
- Set aside first-year compliance budget (~$260 total first year)
Sources
- Maine Secretary of State, Division of Corporations; maine.gov/sos
- Maine Revised Statutes, Title 31, Chapter 21 (Maine Limited Liability Company Act)
- Maine Revenue Services
Post-formation: the first-year checklist
Formation is step one. The obligations that actually generate state and federal trouble if missed sit in the first twelve months after the Articles clear. Plan for:
- EIN. Apply at the IRS EIN portal. Free, instant if you have a US SSN or ITIN.
- Operating agreement. Not filed with the state, but every state presumes one exists for dispute resolution. A single-member LLC still benefits from a written one; banks routinely ask for it when opening a business account.
- Business bank account. Opens only after the state filing clears and the EIN is issued. Commingling personal and business funds is the fastest way to expose yourself to a piercing-the-corporate-veil argument; the SBA's guide to business structures covers the basics of why separation matters.
- BOI report. The FinCEN Beneficial Ownership Information reporting regime requires most new LLCs to report beneficial owners within 30 days of formation. Penalties are serious; the filing is free.
- State tax registration. Sales tax, withholding, unemployment insurance: each is a separate account in most states. Register early so you are not back-filing returns.
Additional primary sources
- Maine Bureau of Corporations: https://www.maine.gov/sos/cec/corp/
- Maine Revenue Services, business taxes: https://www.maine.gov/revenue/taxes
- IRS EIN application: https://www.irs.gov/businesses/small-businesses-self-employed/apply-for-an-employer-identification-number-ein-online