How to Start an LLC in Massachusetts (Step-by-Step Guide)

Forming an LLC in Massachusetts requires filing a Certificate of Organization with the Secretary of the Commonwealth and paying a $500 filing fee. The process takes about 1-2 business days for online filings.

Follow these steps to start your Massachusetts LLC in 2026.

How to Start an LLC in Massachusetts (6 Steps)

Step 1: Name Your Massachusetts LLC

Your LLC name must be distinguishable from other business names registered in Massachusetts. The name must include “Limited Liability Company,” “LLC,” or “L.L.C.”

Search the Massachusetts Secretary of the Commonwealth business name database to check availability. You can also reserve a name for up to 1 year by filing an Application of Reservation of Name ($30 fee).

Massachusetts naming rules:

• Must include an LLC designator (LLC, L.L.C., or Limited Liability Company)
• Cannot be the same as or deceptively similar to an existing entity registered in Massachusetts
• Cannot contain restricted words like “bank,” “insurance,” or “trust” without proper authorization

Step 2: Choose a Registered Agent

Massachusetts requires every LLC to have a registered agent (called a “resident agent”) with a physical street address in Massachusetts. The registered agent accepts service of process and official documents on behalf of your LLC.

You can serve as your own registered agent (if you have a Massachusetts address), or use a professional service. Our top recommendation is Northwest Registered Agent ($39/year), which also handles LLC formation for $39 + the $500 state fee.

Step 3: File Your Certificate of Organization

File your Certificate of Organization with the Massachusetts Secretary of the Commonwealth. You can file online through the Corporations Division website or by mail.

Filing details:

• Filing fee: $500 (by mail), $520 (online — includes $20 electronic surcharge)
• Online filing: Secretary of the Commonwealth Corporations Division (recommended — faster processing)
• Processing time: 1-2 business days (online), approximately 1 week (mail)

Information required:

• LLC name
• Principal office address
• General character of business (brief description of activities)
• Date of dissolution (if applicable, otherwise perpetual)
• Name and address of resident agent in Massachusetts
• Name and address of each manager (if manager-managed) or member (if member-managed)
• Name and address of the authorized signatory

Step 4: Create an Operating Agreement

Massachusetts doesn’t legally require an operating agreement, but having one is strongly recommended. It establishes ownership structure, profit distribution, and management responsibilities — and it’s usually required to open a business bank account.

Step 5: Get an EIN

Apply for an Employer Identification Number (EIN) through the IRS website. It’s free and takes about 15 minutes online. You need an EIN to open a business bank account, hire employees, and file taxes.

Step 6: Register for Massachusetts Taxes

After forming your LLC, register with the Massachusetts Department of Revenue through MassTaxConnect. If you sell taxable goods or services, you’ll need to obtain a sales tax registration certificate.

Note: Massachusetts has a 5% flat income tax rate, plus a 4% surtax on individual income over $1 million (the “Millionaire’s Tax”).

Massachusetts LLC Costs

Total first-year cost: $1,000-$1,299 (including the annual report fee). Massachusetts is one of the most expensive states for LLC formation. See our complete guide to LLC costs by state.

Massachusetts LLC Taxes

Massachusetts LLCs are treated as pass-through entities by default — profits flow through to members’ personal tax returns.

• State income tax: Flat 5% (plus 4% surtax on income over $1 million)
• No franchise or entity-level tax: Massachusetts does not impose a franchise tax or entity-level tax on standard pass-through LLCs
• Sales tax: 6.25% state rate (no local sales tax)
• Federal taxes: Standard pass-through taxation — profits pass to members’ personal returns
• Self-employment tax: 15.3% on net self-employment income (federal)

Annual Requirements for Massachusetts LLCs

• Annual report: Due on the anniversary of your LLC’s formation each year, filed with the Secretary of the Commonwealth. $500 filing fee.
• State income tax: Massachusetts individual income tax returns are due April 15.
• Maintain a registered agent: Must have a resident agent with a Massachusetts address at all times.

Frequently Asked Questions

How long does it take to form an LLC in Massachusetts?

Online filings are typically processed within 1-2 business days. Mail filings take approximately 1 week to process.

Why is Massachusetts so expensive for LLCs?

Massachusetts charges $500 for the initial Certificate of Organization and $500 for each annual report, making it one of the most expensive states for LLC formation and maintenance. The total first-year cost is at least $1,000 in state fees alone.

Does Massachusetts require an operating agreement?

No, Massachusetts doesn’t legally require an operating agreement. However, we strongly recommend creating one. It protects your personal liability and most banks require one to open a business account.

Can I form a Massachusetts LLC if I live in another state?

Yes. You can form a Massachusetts LLC regardless of where you live. You’ll need a resident agent with a physical Massachusetts address. However, if you primarily do business in another state, you may be better off forming your LLC there instead. See our how to start an LLC guide for more on choosing the right state.

What is the Massachusetts millionaire’s tax?

Starting in 2023, Massachusetts imposes an additional 4% surtax on individual income exceeding $1 million (adjusted annually for inflation). This applies to LLC members who earn over the threshold from all income sources, not just LLC income.

Start an LLC in Another State

Click your state below for a step-by-step formation guide with filing fees, requirements, and timelines.