Starting a Business in Maine: Licenses & Requirements 2026

Last updated: February 26, 2026

Starting a business in Maine means registering with the Secretary of State, setting up the right tax accounts, and securing industry-specific licenses before you open. Maine’s LLC formation fee is $175 – higher than many states – but there are no local sales taxes and the state offers straightforward registration processes. Notably, Maine requires workers’ compensation coverage from the very first employee, one of the lowest thresholds in the country. This guide walks through every step using official state sources so you know exactly what you need, what it costs, and where to apply.

How to Start a Business in Maine (Step by Step)

Step 1: Choose Your Business Structure

Most small business owners in Maine choose between a sole proprietorship, a Limited Liability Company (LLC), or a corporation. An LLC is the most common choice because it provides personal liability protection and is taxed as a pass-through entity by default.

Sole Proprietorship: No state registration required. The simplest structure, but you are personally liable for all business debts. If you operate under a name other than your legal name, register a DBA with your local municipal clerk.
LLC: Formed through the Maine Secretary of State. Provides liability protection. Formation fee: $175 (paper/mail filing – Maine does not offer online formation). Annual report: $85, due June 1 each year.
Corporation: More complex governance. Maine corporate income taxes apply (3.5% to 8.93% graduated rates). Consult an attorney if you plan to raise outside investment.

The Maine Secretary of State’s corporations division is your starting point: maine.gov/sos/corporations-commissions.

Step 2: Register Your Business

If you form an LLC or corporation, file with the Maine Secretary of State, Division of Corporations, UCC and Commissions. Unlike many states, Maine does not offer online filing for initial LLC formation – you must mail or hand-deliver paper documents.

Certificate of Formation (LLC): Mail the completed form to the Secretary of State. Filing fee: $175. Standard processing time: 5-10 business days. Expedited processing available for +$50 (next business day) or +$100 (same business day). Download the Certificate of Formation form at maine.gov/sos/corporations-commissions.
Annual Report: LLCs must file an annual report each year by June 1. Fee: $85 for domestic LLCs. Late penalty: +$50 (total $135) if filed after June 1. LLCs still not filed 65 days after June 1 (approximately August 5) are administratively dissolved. File online at the Secretary of State’s annual reports portal.
Registered Agent: Every Maine LLC must maintain a registered agent with a physical Maine street address. P.O. boxes are not permitted. You may serve as your own registered agent if you have a physical Maine address and can be present during all normal business hours. Professional registered agent services typically run $49-$150/year.
Trade Name / DBA: LLCs and corporations operating under a name different from their legal name must file an assumed name with the Maine Secretary of State. Fee: $125 for domestic entities. DBAs do not expire in Maine – no renewal required. Sole proprietors and general partnerships file a DBA with their local municipal clerk (fees vary by town, typically $10-$50).
EIN (Federal): Apply for a free Employer Identification Number from the IRS at irs.gov. Required for multi-member LLCs, all entities with employees, and recommended for any LLC opening a bank account.

Step 3: Get Required Licenses & Permits

Maine does not require a general statewide business license. However, many industries require specific occupational licenses from state agencies, and many municipalities require a local general business license. Common state-level requirements include:

Food trucks / mobile food units: Maine DHHS food establishment license ($166 initial) required before operating.
HVAC (heating/cooling): Maine Fuel Board license required for oil burner, solid fuel, and gas systems work – administered through the Office of Professional and Occupational Regulation (OPOR).
Cosmetology / hair salons: Maine OPOR Barbering and Cosmetology license required for individuals; establishment license required for the salon itself.
Childcare / daycare: Maine DHHS Office of Child and Family Services license required for care of 3 or more unrelated children.
Pesticide application (landscaping): Maine Board of Pesticides Control commercial applicator license required for any business applying pesticides.
Arborists: Maine DACF arborist license required for tree pruning or removal services offered for hire.
Private investigators: Maine State Police professional investigator license required.

Use Maine’s Business Licensing Assistant to identify all licenses applicable to your specific business: maine.gov/portal/business/licensing.html.

See the industry-specific guides below for complete licensing details for each business type.

Step 4: Register for State Taxes

Maine taxes are administered by Maine Revenue Services (MRS). Register for free through the Maine Tax Portal at revenue.maine.gov.

Sales Tax: Maine’s state sales tax rate is 5.5% on general retail sales of tangible personal property. Maine has no local or county sales taxes – the state rate is the total rate. Special rates apply: prepared food and alcoholic beverages taxed at 8%; lodging at 9%; short-term auto rental at 10%. Register for a free Retailer Certificate through the Maine Tax Portal. More info: maine.gov/revenue/taxes.
Service Provider Tax: Maine imposes a 6% Service Provider Tax on certain services. This applies to some cleaning and landscaping services – verify with MRS whether your specific services are subject to this tax.
State Income Tax (2026): Maine LLCs are taxed as pass-through entities. Members pay Maine individual income tax on business income at graduated rates: 5.8% on the first $27,400 (single filers), 6.75% on income from $27,400 to $64,850, and 7.15% on income over $64,850 (2026 rates). Standard deduction: $15,300 (single) / $30,600 (married filing jointly). More info: maine.gov/revenue.
Corporate Income Tax: Maine corporations pay a graduated corporate income tax from 3.5% (income up to $350,000) to 8.93% (income over $3.5 million).
Employer Withholding: If you have employees, register for Maine state income tax withholding through the Maine Tax Portal.
Unemployment Insurance (UI): Register with the Maine Department of Labor (MDOL) at maine.gov/unemployment/employers. New employer combined rate: 2.54% (2026 Schedule A) on the first $12,000 per employee per year. Experienced employer rates vary based on claims history.
New Hire Reporting: Report all new employees to Maine within 7 days of hire – one of the shortest reporting windows in the country. Report online at portal.maine.gov/newhire.

Step 5: Get Business Insurance

Maine requires workers’ compensation coverage for any business with 1 or more employees – among the lowest thresholds in the United States. This applies to all industries. Limited exemptions exist for very small agricultural and aquaculture operations. Coverage must be purchased from a licensed private insurance carrier or through self-insurance approved by the Maine Workers’ Compensation Board. The Maine Workers’ Compensation Board administers the state program: maine.gov/wcb.

Beyond workers’ comp, most businesses need general liability insurance. HVAC and landscaping businesses need proof of insurance to obtain state licenses. Childcare facilities, arborists, and private investigators each have specific minimum coverage requirements. Contact the Maine Bureau of Insurance for guidance: maine.gov/pfr/insurance.

Maine Business Guides by Industry

Choose your industry for a detailed breakdown of every license, permit, and requirement:

Maine Business Resources & Official Links

Frequently Asked Questions

How much does it cost to form an LLC in Maine?

Filing a Certificate of Formation with the Maine Secretary of State costs $175. Maine requires paper/mail filing – there is no online formation option for LLCs. Processing takes 5-10 business days, or you can pay +$50 for next-business-day service. After formation, domestic LLCs pay an $85 annual report by June 1 each year. First-year total costs typically run $225-$400 including registered agent fees ($49-$150/year).

Does Maine have a general state business license?

No. Maine does not require a general statewide business license. However, many municipalities require a local general business license – check with your city or town clerk. Many industries require specific occupational licenses from state agencies such as OPOR, DHHS, or the Board of Pesticides Control. Use the Maine Business Licensing Assistant at maine.gov/portal/business/licensing.html to identify what applies to your business.

What is the Maine state income tax rate for businesses in 2026?

Maine LLC members pay individual income tax on their share of business income at graduated rates: 5.8% on income up to $27,400, 6.75% on income from $27,400 to $64,850, and 7.15% on income over $64,850 (2026 single filer brackets). The standard deduction is $15,300. C-corporations pay a separate graduated corporate income tax from 3.5% to 8.93%. Maine does not have a separate LLC franchise tax.

Does Maine require workers’ compensation insurance?

Yes – for any business with 1 or more employees. This is one of the lowest thresholds in the country. There are limited exemptions for very small agricultural and aquaculture operations. Business owners who are sole proprietors or partners are not counted as employees for this purpose. Coverage must be purchased from a licensed carrier. The Maine Workers’ Compensation Board regulates coverage at maine.gov/wcb.

What is the Maine sales tax rate?

Maine’s general state sales tax rate is 5.5%. Maine has no local or county sales taxes, so this is the total rate you’ll collect. Special rates apply: prepared food and alcohol at 8%, lodging at 9%, short-term vehicle rental at 10%. Maine also has a 6% Service Provider Tax on certain services. Groceries and prescription drugs are exempt from sales tax.

How do I file a DBA in Maine?

It depends on your business structure. Sole proprietors and general partnerships register a DBA with their local municipal clerk (fees vary, typically $10-$50). LLCs and corporations file an assumed name with the Maine Secretary of State for a fee of $125. Unlike many states, Maine DBA registrations for LLCs do not expire and require no renewal.

How quickly does Maine process LLC formation filings?

Standard processing takes 5-10 business days after the Secretary of State receives your mailed documents. If you need faster service, pay +$50 for next-business-day processing or +$100 for same-day processing. There is no online filing option for new LLC formations in Maine – all applications must be mailed or hand-delivered to the Division of Corporations in Augusta.

Business Guides for All States

Browse LLC formation, licenses, and permit requirements for every U.S. state.

About the Author

Robert Smith has run a licensed private investigation firm for 8 years from the Florida-Georgia state line - where he learned firsthand how wildly business licensing rules differ between states just miles apart. He personally researched requirements across all 50 states and D.C., reviewing hundreds of government sources over hundreds of hours to build guides he wished existed when he started. Not a lawyer or accountant - just a business owner who has done the research so you don't have to.

Learn more about our research process