Connecticut State Law requires that anyone conducting business under an assumed name (DBA) must file a Trade Name Certificate in the Town Clerk’s office in the town where the business is being conducted. All people who are authorized to sign on behalf of the business must sign their name on the Trade Name Certificate. A Trade Name Certificate form may be obtained by clicking the link below or from the Town Clerk’s office. Once it is completed with the business name and street address (not PO box), and the owner’s name and street address (not PO box), it must be notarized by a notary or Town Clerk. Return it to the Town Clerk’s office along with the $10.00 filing fee. For certified copies, please include an additional $3.00 certification and copy fee.