How to Name Your Massachusetts LLC

Filing fee: $500 (Certificate of Organization)

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State agency: Massachusetts Secretary of the Commonwealth, Corporations Division

Annual report due: Annual report due annually by the anniversary date of formation

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To name an LLC in Massachusetts, your name must be distinguishable from all existing entities on file with the Secretary of the Commonwealth, include an LLC designator like "LLC" or "L.L.C.", and pass a name availability search before you file your Certificate of Organization. Massachusetts also has a few state-specific rules worth knowing before you commit to a name.

Massachusetts LLC naming rules

Every Massachusetts LLC name must follow a core set of requirements under state law. These apply regardless of your industry or business type.

• Your name must include "limited liability company," "limited company," or an abbreviation: "LLC," "L.L.C.," "LC," or "L.C."
• Your name must be distinguishable from all other business entities already on file with the Corporations Division — not just identical names, but names that are confusingly similar
• Your name cannot use corporate endings like "corporation," "incorporated," or "Inc." — those are reserved for corporations formed under Massachusetts corporate law
• Your name may include the name of a member or manager of the LLC, which is a Massachusetts-specific allowance worth knowing if you plan to use your own name

One thing that catches people off guard: simply swapping one form of "LLC" for another — say, "LLC" to "L.L.C." — does not make a name distinguishable from an existing entity. The Corporations Division looks at the substantive words in the name, not just the suffix.

How to check Massachusetts LLC name availability

Massachusetts provides an official Business Entity Search through the Secretary of the Commonwealth's Corporations Division. Use it to check whether your proposed LLC name is already taken before you file anything.

To run the search, go to the Corporations Division corporate records search page and select the "Entity Name" option. Enter all or part of your proposed name and review the results. The search returns a list of matching entities with their name, ID number, and address.

Don't stop at an exact-match search. Run partial searches and variations of your key words too — the state's similarity standard means a name that's close to an existing one can still be rejected even if it isn't identical.

Name similarity restrictions

Massachusetts requires your LLC name to be distinguishable from every existing corporation, LLC, and limited partnership on file with the Secretary of the Commonwealth — not just other LLCs. A name that's likely to be mistaken for an existing entity won't be approved.

The practical implication: if your proposed name shares the most distinctive words with an existing entity — even with different filler words around them — the Corporations Division may reject it. Search broadly and have a backup name ready before you file.

How to reserve an LLC name in Massachusetts

If you've found an available name but aren't ready to file your Certificate of Organization yet, Massachusetts lets you reserve it. File an Application of Reservation of Name with the Corporations Division and the name is held for 60 days.

Name reservation is optional. You can also secure your name by filing the Certificate of Organization directly without reserving first. Either way, check availability through the Business Entity Search before you submit anything.

Massachusetts DBA (doing business as)

If your LLC operates under any name other than its exact legal name — including the LLC suffix — you need to file a business certificate, commonly called a DBA (doing business as). Massachusetts law requires this under General Laws Chapter 110, Section 5.

Unlike most state-level filings, the DBA is filed locally — with the clerk of the city or town where your business operates, not with the Secretary of the Commonwealth. Each municipality sets its own form and fee. The certificate creates a public record linking the trade name to the LLC behind it.

To file, get the business certificate form from your city or town clerk's office, complete it with your business name, address, and the names and addresses of the LLC's principals, and submit it with the local filing fee.

Trademark considerations

State name availability and federal trademark protection are two separate things. A name can be available in Massachusetts and still infringe on a federally registered trademark — and that's a problem that state approval won't protect you from.

Before you commit to a name, run a search through the USPTO's trademark database. If someone else holds a registered trademark on the same or a similar name in your industry, using it could put you on the hook for infringement — even if the Massachusetts Corporations Division approved it. A trademark attorney can help you figure out whether a conflict exists.

How to change your LLC name

If you need to rename your LLC after formation, you file a Certificate of Amendment with the Corporations Division. The new name must meet all the same requirements as the original — distinguishable from existing entities, and including a valid LLC designator.

Before filing, run the new name through the Business Entity Search to confirm it's available. The Certificate of Amendment must be signed by a manager or authorized member under the LLC's governing documents or Massachusetts LLC law. You can file online through the Corporations Division filing system or submit a paper form by mail or in person.