If you are doing business on Nantucket, under anything other than your own name, you are required by Massachusetts General Law (MGL) to file a Doing Business As (DBA) with the Town Clerk's Office.
There are three exceptions where you are not required by law to file:
If you are currently incorporated within the State of Massachusetts
If you hold an LLC with the State of Massachusetts
If you have a Trademark with the State of Massachusetts.
Please remember that filing a DBA is not a name protection unless you fall under the three exceptions.
The filing fee is $40 and your DBA will be valid for four years from the date of filing.