2. The Administrative Hierarchy of the Ministerial cadre in the field formations under CBEC begins with Tax Assistant (Gr. ‘C’ with GP-2400) at the entry level, whose first promotional opportunity is to the grade of Senior Tax Assistants – (Gr. ‘C’ with GP – 4200). Thereafter there are two promotional avenues available to the Senior Tax Assistants; i.e., (a) Deputy Office Superintendent (Gr. ‘B’ Non Gazetted – with GP – 4200) (DOS) and further as Administrative Officer (Gr. ‘B’ Gazetted with GP – 4600) (AO) in the Ministerial cadre; and (b) Inspectors (Gr. ‘B’ Non-Gazetted with GP – 4600) and further as Superintendents (Gr. ‘B’ Gazetted with GP – 4800) in the Executive cadre.