If you plan to open a business in Town, complete this form, (The Town Clerk will assign a certificate numebr and expiration date when it is received.) have it notarized, and mail it back to the Town Clerk with a check for $40.00. DBAs are good for four years, and are required for any local business that is not conducted under the owners' legal name. For example, Bill's Quality Painting requires a DBA, William Smith's Quality Painting does not need a DBA. LLCs, corporations and other forms of business do not need a DBA, because they are registered at the State level.