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Massachusetts has no statewide DBA register. The record lives with the city or town where the business operates. The state's own page, Business certificates (DBA) in Massachusetts, says you file your certificate in the city or town where your business is located.
The same page says the document goes by other names: doing business as, trade name, fictitious name and assumed name. In Massachusetts they all mean the business certificate.
Who has to file one?
You file if the business operates under any name other than its legal name. For an LLC the legal name is the one on the filing with the state. For a sole proprietor it is the owner's own name.
The state gives an example. A company called Smith & Sons Accounting Services that wants to trade as FastTax Solutions must file, because the trading name differs from the legal name. If it later switches to a third name, it files again. Each new name needs its own certificate.
Where does the certificate go?
To the town or city clerk's office in the place where you operate. Each city and town has its own process, usually through the clerk. The state page carries a table of clerk contacts, with links to each place's business certificate details. The town of Monroe has no website, and the state tells you to visit the town offices.
The state page lists no fee and no renewal rule. Both depend on the place, so ask the clerk before you go. Our how to file a DBA guide has a generic checklist you can adapt.
What does the certificate record?
It makes a public record of the business owner's name and address. The state cites M.G.L. chapter 110, section 5, for that. It is not a business license. Our Massachusetts business license guide covers the licensing side.
How do I search for a Massachusetts DBA?
Because the filing is local, the search is local too. Start with the clerk's page for the city or town where the business operates, using the state's clerk table. The pages we read do not describe a statewide search for DBAs, and we do not link one. For companies registered with the Secretary of the Commonwealth, use the state business entity search described on our Massachusetts business search guide. The DBA search guide explains how the two kinds of record differ.
Should I check the name before I file?
Yes, and the clerk is not the only place to look. The Secretary of the Commonwealth lets you search its business entity records, and the LLC guide on mass.gov suggests also searching for similar names that would sit beside yours. Our LLC name search page shows how to read those results. The business certificate itself is only a public record, so a clean clerk filing does not tell you that a state registered company already uses the same words.
Do I need one if I use my legal name?
No. The state's test is whether you operate under any name other than the legal name. If you trade under a wording that differs from the filed name, ask the clerk whether it counts as another name.
Does a DBA replace an LLC?
No. A business certificate only records who stands behind a trading name. An LLC is a separate filing: the Certificate of Organization, filed with the Secretary of the Commonwealth. See DBA versus LLC for the comparison, and our Massachusetts LLC guide for the formation steps.
If you are forming an LLC and plan to trade under a different name, you do both. The LLC filing comes from the state. The business certificate comes from the city or town.