The official search
The registry is run by the Secretary of the Commonwealth, Corporations Division. Massachusetts has no "Secretary of State" by that title — this is the office that handles business filings.
- Search page: https://corp.sec.state.ma.us/corpweb/CorpSearch/CorpSearch.aspx
- Cost: Free
- Login: None required to search
The database covers corporations, LLCs, limited partnerships, LLPs, and other formal entities registered with the Corporations Division. It does not cover business certificates — the Massachusetts version of a DBA. Those are filed with the clerk of each city or town where a business has an office, so a sole proprietor trading under a shop name will never appear here, and there is no statewide DBA list to check instead.
There is no separate tool that gives a yes-or-no availability verdict. You judge availability from the results, and the Corporations Division decides when it reviews your Certificate of Organization or a name reservation application.
A results list shows matching entity names with their identification numbers. Opening a record brings up a Business Entity Summary with the legal name, entity type, date of organization, office address, resident agent, the people who manage the company, and its filing history. Massachusetts uses the term resident agent rather than registered agent.
Step by step
- Open the Business Entity Search at corp.sec.state.ma.us and choose the entity name search.
- Search your full proposed name without "LLC." Note anything identical or close.
- Search the most distinctive word or phrase on its own. A name built from common words — "Bay State," "Boston," "New England" — will have neighbours a full-name search alone would miss.
- Try spelling and sound variations. Because the test is deceptive similarity, a name that merely sounds like an existing one can still be a problem. Check the obvious variants, not just the exact spelling.
- Check every entity type, not just LLCs. Section 3 covers corporations and limited partnerships as well as LLCs, domestic and foreign, so a conflict can come from any of them.
- If nothing close appears, the name is probably available — but only the Corporations Division's review of your actual filing is definitive.
Massachusetts's name rules
The rules are in Massachusetts General Laws chapter 156C, section 3 of the Massachusetts Limited Liability Company Act.
Designator. The name must contain "limited liability company," "limited company," or one of the abbreviations "L.L.C.," "L.C.," "LLC," or "LC." It may contain the name of a member or manager.
Not the same as, or deceptively similar to. Your name may not be the same as, or deceptively similar to, the name of any corporation, limited partnership, or limited liability company that is reserved or organized under Massachusetts law, or registered in Massachusetts as a foreign corporation, foreign limited partnership, or foreign LLC.
That "deceptively similar" wording is the heart of a Massachusetts name check. Many states ask only whether a name is "distinguishable" on the records, a narrower, spelling-level test. Massachusetts's wording reaches further, toward names a customer could plausibly confuse with yours — so the wider searches in steps 3 and 4 are not optional extras here.
The consent exception. There is one way through a conflict: the existing corporation, limited partnership, or LLC can give its written consent, filed with the Secretary of the Commonwealth in advance. Without that filed consent, a same or deceptively similar name will not be accepted.
Prohibited and restricted words. Section 3 itself sets out no list of banned words beyond the rules above. Other Massachusetts laws can affect particular industries, so if your name describes a licensed activity, confirm with the Corporations Division before you file.
Reserving a name. Massachusetts allows name reservations under chapter 156C, section 4, using an application to the Secretary of the Commonwealth: $30 for 60 days, and the reservation may be extended for one additional 60 days on written request. A reservation is optional — it holds the name while you prepare, but it does not create an LLC.
What the search can't tell you
- Local trade names. Business certificates (DBAs) are filed town by town with city and town clerks. A conflicting shop name registered only at a town hall is invisible to this search.
- A final verdict. The search gives no availability ruling. Approval happens when the Corporations Division reviews your filing or reservation.
- Trademarks and domains. The search says nothing about federal trademark rights or whether the matching .com is taken.
If the name looks available
File a Certificate of Organization — Massachusetts does not call the formation document Articles of Organization — with the Corporations Division, online through its filing system at corp.sec.state.ma.us, or by mail or in person.
- Cost: $500. That is at the very top of the national range for forming an LLC.
- Online filings: the Division is reported to add a $20 expedited fee to electronic and fax filings, which would bring an online filing to $520 — check the total on the Division's current fee schedule before you pay, and budget for the higher figure.
Ongoing: the annual report.
- Fee: $500 per year. Yes, every year — the same headline figure as formation.
- Due date: on or before the anniversary of the date your Certificate of Organization was filed. There is no single statewide deadline. Form on June 3, and every annual report is due by June 3. Put the date in your calendar at formation; it is different for every LLC and easy to lose.
- Late filing: Massachusetts publishes no flat dollar late fee for LLC annual reports in its fee schedule, but letting reports lapse puts the LLC on the road to administrative dissolution — and catching up means filing (and paying for) every missed report.
Budget honestly: a Massachusetts LLC costs $500 to start and $500 a year to keep, before taxes and any local licences. That recurring $500 is why founders generally form here only when they actually operate here.
FAQ
Is the Massachusetts LLC name search free? Yes. The Corporations Division's Business Entity Search is free and requires no login to search.
What does "deceptively similar" mean for my name? Under chapter 156C, section 3, your name cannot be the same as, or deceptively similar to, an existing corporation, limited partnership, or LLC on file — unless that entity's written consent is filed with the Secretary of the Commonwealth first. In practice, search spelling and sound-alike variations, not just exact matches.
How much does it cost to form an LLC in Massachusetts? The Certificate of Organization filing fee is $500. Filing online is reported to add a $20 expedited fee, for $520 total — confirm the current total on the Corporations Division's fee schedule.
Can I reserve a Massachusetts LLC name? Yes. Under chapter 156C, section 4, a reservation costs $30 and holds the name for 60 days, extendable once for another 60 days on written request.
When is the Massachusetts LLC annual report due, and what does it cost? The annual report costs $500 and is due on or before the anniversary of the date your Certificate of Organization was filed — your own date, not a statewide deadline.
Sources
- Secretary of the Commonwealth, Corporations Division — Business Entity Search: https://corp.sec.state.ma.us/corpweb/CorpSearch/CorpSearch.aspx
- Massachusetts General Laws ch. 156C, §3 (LLC name rules): https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXXII/Chapter156C/Section3
- Massachusetts General Laws ch. 156C, §4 (name reservation): https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXXII/Chapter156C/Section4
- Secretary of the Commonwealth — Corporations Division Filing Fees: https://www.sec.state.ma.us/divisions/corporations/general-information/corporations-filing-fees.htm