The certificate allows a business to collect sales tax on taxable sales. The certificate comes from the New York State Department of Taxation and Finance (DTF).By signing below, I acknowledge that I am an authorized representative of the Customer. The. Download the form to your device. Witness my hand and official seal in the county and state stated above on the _____ day of. ______, in the year ______. I think there's some available instructions online or in BIR website if you want to transact through an authorized representative. This instruction provides naval afloat command safety standards and precautions necessary to carry out the program established in reference (a). Ensure that you specify the item or document being claimed. This includes filling out forms, signing documents, and providing other necessary information to the MWSS Corporate Office.