All business corporations organized under the laws of the Commonwealth, except those dissolved prior to July 1, 2004, file on the forms provided below. DOR has released its 2024 Massachusetts Corporate Excise tax forms.You will also find prior year forms and estimated tax payment vouchers. To form a corporation in Massachusetts, you must file articles of organization with the Secretary of State. A limited liability company is formed at the time of filing of the certificate of organization with the Corporations Division.