Maine business insurance requirements come down to two things: what the state legally makes you carry, and what your clients make you carry to win the work. This guide lays out the Maine business insurance requirements in plain English — commercial-auto minimums, contractor license and bond amounts, and which trades must insure to stay licensed. All figures are from Maine sources, verified as of June 2026.
In This Maine Guide:
What Insurance You Need to Operate in Maine
Maine requires workers compensation insurance for any business with 1 or more employees, auto liability insurance on every registered vehicle at 50/100/25 minimums, and state licensure with insurance for specialty trades like electricians and plumbers — general liability is not mandated by state law for most businesses but is almost always required by clients and landlords via contract.
Maine Business Insurance Requirements at a Glance
Here are the exact Maine business insurance requirements set by the state:
| Commercial auto minimum limits | 50/100/25 = 50000 bodily-injury-per-person / 100000 bodily-injury-per-accident / 25000 property-damage (or 125000 combined single limit); medical payments coverage of at least 2000 is also required by law |
| Commercial / heavy vehicles | For-hire passenger vehicles, freight haulers with operating authority, and vehicles over 10001 pounds must carry significantly higher limits under Maine Title 29-A Section 1611 — for-hire and heavy vehicles require 2 to 15 times the standard minimums; interstate for-hire passenger vehicles with 15 or fewer seats require 1500000 combined single limit |
| State contractor license required? | NO state-level general contractor license as of 2026; general contractors are regulated at the municipal level only; specialty trades (electricians, plumbers) require state licenses; NOTE: LD 1226 (Maine Home Contractor Licensing Act) takes effect January 1 2027 and will require state licensing for residential contractors on projects exceeding 15000 |
| Contractor surety bond | NONE at the state level for general contractors; manufactured housing installers must post a 10000 surety bond per HUD requirements; some municipalities may require bonds for specific trades or public projects |
| Insurance to hold a license | No state-mandated general liability minimum for general contractors as of 2026; licensed electricians must carry liability insurance before performing professional work; all contractors with 1 or more employees must carry workers compensation; the 2027 law (LD 1226) will require up to 500000 in general liability plus workers compensation for licensed residential contractors |
| Other licensed trades | Licensed electricians must carry liability insurance to perform professional electrical work; plumbers require state licensure through the Plumbers Examining Board; other professions requiring insurance to maintain licensure include healthcare providers and certain financial services professionals — confirm specific trade requirements with the relevant Maine examining board |
Required by Law vs. Required by Clients in Maine
The state sets the legal floor shown above. Your clients, landlords, and lenders usually require more, by contract: General liability insurance (typically 1000000 per occurrence / 2000000 aggregate) is commonly required by commercial clients, landlords, and lenders via contract; additional insured endorsements and certificates of insurance (COIs) are standard in commercial leases and subcontractor agreements; professional liability (errors and omissions) is often required by consulting and service contracts;
these are contractual requirements, not state law
Registering your business: Registering a business or LLC with the Maine Secretary of State (Division of Corporations) is a separate legal step from obtaining insurance — filing the Certificate of Formation (Form MLLC-6) costs 175 with 10-15 business day processing; annual reports are due by June 1; business registration does not automatically provide or require any insurance
Core Coverages Most Maine Businesses Carry
Beyond what the law strictly requires, a few coverages show up again and again for Maine businesses. General liability covers third-party injuries and property damage and is the policy clients ask for most. A business owner’s policy (BOP) bundles general liability with commercial property at a lower combined price. Professional liability (errors and omissions) covers advice-and-service businesses when a client claims a mistake cost them money.
Commercial auto covers vehicles used for work, which a personal auto policy will not. Workers’ compensation covers employees who get hurt on the job. Matching these to your trade is the practical side of the Maine business insurance requirements.
Certificates of Insurance and Additional Insureds in Maine
Most of the Maine business insurance requirements you actually run into come from a contract, not a statute. A client, landlord, or general contractor will ask for a certificate of insurance (COI) before you start work, often demanding a specific dollar limit and asking to be named as an “additional insured” on your general liability policy.
There is usually no fee to add an additional insured, and a COI is free from your agent. Lining these up early keeps a paperwork request from delaying a job.
Other Maine requirements: Maine exempts agricultural and aquaculture employers with seasonal or casual workers from workers compensation if they maintain at least 25000 in employers liability insurance and 5000 in medical payment coverage; agriculture or aquaculture employers with 6 or fewer laborers can qualify for exemption with 100000 per full-time equivalent in employers liability; sole proprietors, partners,
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and LLC members are excluded from workers compensation coverage by default but may elect to be included; Maine requires uninsured motorist (UM), underinsured motorist (UIM), and medical payments coverage on all auto policies by law; towing and storage coverage of 500 is mandatory when a vehicle is towed at law enforcement request after an accident
Understanding Maine Business Insurance Requirements
The Maine business insurance requirements fall into two buckets: what the state legally makes you carry, and what your clients or landlords make you carry by contract. The table above lays out the Maine business insurance requirements that come from the state itself — commercial-auto minimums, contractor bonds, and licensing rules.
Most Maine business insurance requirements you actually run into day to day, like a certificate of insurance, come from a customer rather than the state. Knowing both sides of the Maine business insurance requirements lets you buy exactly what you need to operate and win work, without overpaying for coverage no one is asking for.
Next step: Once you know what your business in Maine actually needs, comparing quotes from several carriers takes only a few minutes. Many owners do this right after they understand their state and trade requirements.
Frequently Asked Questions
What business insurance is required in Maine?
Maine requires workers compensation insurance for any business with 1 or more employees, auto liability insurance on every registered vehicle at 50/100/25 minimums, and state licensure with insurance for specialty trades like electricians and plumbers — general liability is not mandated by state law for most businesses but is almost always required by clients and landlords via contract.
What are the commercial auto insurance minimums in Maine?
Maine’s minimum auto liability limits are 50/100/25 = 50000 bodily-injury-per-person / 100000 bodily-injury-per-accident / 25000 property-damage (or 125000 combined single limit); medical payments coverage of at least 2000 is also required by law.
Do I need general liability insurance to operate in Maine?
General liability is rarely required by Maine law for most businesses, but clients, landlords, and lenders often require it by contract, and licensed contractors may need it to keep a license. Many owners carry it either way.
Official Maine Sources & Resources
- Maine Maine Bureau of Insurance (within the Department of Professional and Financial Regulation): https://www.maine.gov/pfr/insurance/home
- Maine Licensing Board: https://www.maine.gov/pfr/professionallicensing
- Maine DMV/DOT (commercial auto): https://www.maine.gov/sos/bmv/commercial/operatingauth.html
- Insurance Information Institute: iii.org
- U.S. Small Business Administration: sba.gov
These Maine business insurance requirements were last verified against official sources in June 2026. Requirements and minimums change — confirm the current figure with your state and a licensed agent.
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Disclaimer: This guide is informational only and is not insurance, legal, or tax advice. Business Insure Guide is an independent educational resource, not an insurance agency or carrier. Coverage needs, legal requirements, and prices vary by business, profession, and state and change over time. Always verify the exact requirement and price with a licensed insurance agent and your state before you buy.