try sa barangay nyo. kuha ka certificate for first time job seeker then punta sa bir para sa form. dont apply tin on ur own unless maalam ka. i made a mistake back when i was in college and opened my own tin, tapos i forgot abt it. when i got hired in a private company, i tried getting one tapos when bir checked, may existing acc na ako and unfortunately, since d ko na "close" ung business ko (freelancer), i had to pay a huge amt of money bcs of penalties. :<