How to Start an LLC in Maine (2026 Guide)
Maine is the last mail-only state: there's no online portal for forming an LLC — you print Form MLLC-6, write a $175 check, and mail it to Augusta. This guide covers all 8 steps, the expedite tiers that tame the wait, the June 1 deadline with its $50 penalty, and every fee on the books.
To start a Maine LLC, file a Certificate of Formation (Form MLLC-6) with the Maine Secretary of State for $175 — by mail or hand delivery only; Maine has no online formation filing. Standard processing takes roughly 2–3 weeks plus mail time; add $50 for next-business-day or $100 for same-day expedited service. After formation, file an $85 annual report between January 1 and June 1 every year — late filings incur a $50 penalty, and about 65 days after June 1 the state moves to administratively dissolve non-filers.
- State filing fee
- $175 (Form MLLC-6)
- Filing method
- Mail / hand delivery only
- Standard processing
- ~2–3 weeks + mail
- Expedite
- +$50 next-day · +$100 same-day
- Annual report
- $85 · due June 1
- Late penalty
- $50 after June 1
Why Form an LLC in Maine?
If your business lives in Maine, form your LLC in Maine — the liability protection, banking, and licensing all key off your home state. The Maine Limited Liability Company Act (Title 31) is modern and flexible, there's no franchise tax and no entity-level tax on a default LLC, and sales tax is a simple 5.5% statewide with zero local add-ons. The trade-offs are procedural: a $175 filing fee on the higher side, an $85 annual report, and — uniquely in 2026 — no online formation filing at all.
An LLC separates your personal assets from business debts and lawsuits. Still weighing structures? Read LLC vs Sole Proprietorship. Ready? Here's what Maine actually requires.
- No entity-level tax: no franchise tax, no LLET-style levy — pass-through profits are taxed once, on your return.
- Simple sales tax: 5.5% statewide, no county or city rates to track (prepared food and lodging carry higher special rates).
- Modern LLC Act: strong charging-order protection and freedom of contract under Title 31.
- Predictable compliance: one $85 report, one famous deadline — June 1.
- Speed is purchasable: $50 next-business-day or $100 same-day processing when timing matters.
The catch — paper or nothing: Maine accepts LLC formations only by mail or hand delivery to Augusta. A missing contact name, an unsigned form, or a check made out to the wrong payee doesn't get a friendly error message — it gets mailed back, costing you weeks. The MLLC-6 packet checklist in Step 3 exists to make your envelope rejection-proof.
How to Start a Maine LLC in 8 Steps
Your name must be distinguishable from every Maine entity and carry an LLC designator. Search free with the Secretary of State — and because mail-only filing creates long gaps, Maine's $20 name reservation earns its keep here more than almost anywhere.
Maine follows the Model Registered Agents Act — you'll list either a commercial registered agent (by CRA number) or a noncommercial one with a physical Maine street address. Changing later costs $35 (Form CLKRA-3).
File the Certificate of Formation (MLLC-6)
The $175 mail-only filing that creates your LLC. Standard processing runs roughly 2–3 weeks; a $50 or $100 expedite with a cover sheet cuts it to next-day or same-day once the envelope arrives.
Not required by Maine, but it's the document that overrides Title 31's default rules, satisfies your bank, and hardens a single-member LLC's liability shield.
Get Your Free EIN from the IRS
Your federal tax ID for banking, hiring, and Maine Revenue Services registration. Always free at IRS.gov — about 15 minutes online.
File Your Annual Report (Every Year)
$85, window January 1 – June 1, and — mercifully — this one can be filed online. Late means a flat $50 penalty; roughly 65 days after June 1, dissolution proceedings begin. Maine mails no forms; reminders are courtesy emails only.
Get Business Licenses & Permits
No statewide general license — but town clerks issue municipal licenses, regulated professions license through OPOR boards, and taxable sellers register with Maine Revenue Services for the 5.5% sales tax.
Graduated state income tax of 5.8%–7.15% on pass-through profits, 15.3% federal self-employment tax, 5.5% sales tax (8% prepared food, 9% lodging), and no entity-level tax. Full breakdown in Step 8.
What a Maine LLC Really Costs (2026)
| Cost Item | Amount | When |
|---|---|---|
| Certificate of Formation (MLLC-6) (required) | $175 | One-time, at formation |
| Annual Report (required) | $85/yr | Jan 1 – Jun 1, every year |
| Late annual report penalty | $50 | After June 1 |
| Expedited processing (optional) | +$50 / +$100 | Next-day / same-day |
| Registered agent service (optional) | $0–$125/yr | Annual, if hired |
| Name reservation (optional) | $20 | 120 days |
| Assumed name / DBA (optional) | $125 | One-time, if used |
| Change of registered agent (CLKRA-3) | $35 | If changed later |
| EIN from the IRS | $0 — always free | At IRS.gov |
| Reinstatement (per ground) | $150 · report portion capped $600 | If dissolved |
Bottom line: a DIY Maine LLC costs $175 to start and $85/yr to maintain — no entity tax, no franchise tax. Model your setup and your realistic calendar below.
Maine Mail-Filing Timeline & Cost Planner
In an online-filing state, cost planning is enough. In Maine, the calendar is half the plan — mail transit plus processing determines when your LLC actually exists. This tool models both.
Maine Mail-Filing Timeline & Cost Planner
Costs + a realistic existence date · verified July 2026
Processing estimates reflect published ranges and vary with volume; the return mail of your stamped certificate adds transit time on the back end too. Excludes taxes and licenses.
The Mail-Only Reality: Rejection-Proofing Your Envelope
- Include a contact name plus a phone number or email — the MLLC-6 cover instructions warn that filings missing this can be returned unprocessed.
- Check payable to "Maine Secretary of State" (or use the credit card payment voucher) for exactly $175 plus any expedite fee.
- Expedites need the cover sheet specifying the service level — a loose $50 check isn't an instruction.
- One expedite fee covers multiple documents for the same entity delivered together — reserve + formation in one envelope rides on one fee.
- Address: Department of the Secretary of State, 101 State House Station, Augusta, ME 04333.
Maine LLC Taxes at a Glance
Default LLCs pass profits to your personal return, where Maine's graduated rates apply: 5.8%, 6.75%, and 7.15% across the brackets. Add federal self-employment tax of 15.3% on 92.35% of net profit. The LLC itself owes Maine nothing annually beyond the $85 report — no franchise tax, no entity levy. Sellers collect 5.5% statewide sales tax (no local rates), with special rates of 8% on prepared food and 9% on lodging, and Maine's service provider tax touches certain services. Past roughly $60–80K profit, model an S-Corp election (Form 2553) — details in Step 8.
Ahmad Adil's Take: Maine's paper process sounds archaic, but it punishes exactly one thing: sloppiness. Every rejected envelope I've seen came down to the same three misses — no contact info, wrong payee on the check, or an expedite fee with no cover sheet. Get the packet right and Maine is actually pleasant: one filing, one June deadline, no entity tax, no local sales rates. My move for anyone in a hurry: overnight the envelope with the $50 expedite — for about $75 extra all-in, you've turned a month into three days.
- ✓Forms your Maine LLC for $39 + the $175 state fee
- ✓Prepares and mails the paper-only MLLC-6 for you
- ✓Free Maine registered agent (commercial CRA) the first year
- ✓No upsells · No data selling · Privacy by Default
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Maine LLC — FAQ
Ahmad Adil is the founder and CEO of LLC School. The figures here — the $175 mail-only Certificate of Formation (MLLC-6), the $85 June 1 annual report with its $50 late penalty, and Maine’s 5.8%–7.15% graduated income tax — reflect current Maine Secretary of State and Maine Revenue Services guidance. This is educational content, not legal or tax advice.
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