When an individual joins a new organization or firm in the middle of a fiscal year, they must file Form 12B, an income tax form, in accordance with Rule 26A. The form’s primary goal is to provide information about the person’s income from their prior employer. Form 12B must be turned in to the new employer by each new hire. Only salaried workers who have changed occupations in the midst of the fiscal year are eligible to use Form 12B.