SOME INFORMATION FOUND ON NET
AUDITOR
This is a post in the pay band 5,200-20,200 with grade pay of RS 2,800.He has to pass a confirmatory exam first to be confirmed. He becomes Sr Auditor automatically after the completion of three CALENDER YEARS service as Auditor subject to his confirmation. The pay-band for Sr Auditor is 9,300-34,800 and grade pay of Rs 4,200. But an Auditor can also appear in the SAS Exam after two years of qualifying service at the post if he is confirmed. After passing the exam he becomes AAO (Assistant Audit Officer) which is a Group-B gazetted post in the pay-band 9,300-34,800 with grade pay of Rs 4,800. But while on this post of AAO he has to pass certain departmental exam which has papers that are extremely difficult in nature. If they are not passed within a certain period he is subjected to be demoted to the Auditor post again. BIG DRAWBACK!
An Auditor can also to be asked to go on official tours sometimes which may run for good 9 months period even!
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TAX ASSISTANT
This is a post in the pay band 5,200-20,200 with grade pay of RS 2,400.Tax Assistant in CBDT can be posted at two levels-----------either in assessment of tax or in non-assessment. When he is posted in assessment he is supposed to do the work related to assessment of the income tax of an individual or a partnership firm or a company or as the case maybe; and he is to feed that data in the computer. He could also be asked to do any clerical work like work related to DIARY AND DISPATCH, noting, drafting etc. He could also be asked to accompany the RAID team. When he is posted at a seat that belongs to non-assessment he is supposed to do only clerical work. He also gets a SIM from the department on which all STD or LOCAL calls on any phone of BSNL or MTNL are totally free. On phones of other companies he can make free calls upto 400 minutes a month; whether local or STD or both types. This SIM is provided to every TA in CBDT irrespective of type of the seat he is posted at.
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Promotions:Sr TA, ITI, ITO (Group-B gazetted); Assistant commissioner and so on.
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His next promotion is to the post of Sr TA for which 3 years of service is a qualification; means he cant be promoted to that post before 3 years of his tenure in the post of TA. Besides a departmental exam (in the name of DEPARTMENTAL EXAM FOR MINISTERIAL STAFF) too is a must to pass for promotion. He can appear in this exam anytime after his joining; according to the schedule declared. But this exam is just an eligibility; means he can be promoted only according to his seniority. After promoted to Sr TA he is promoted to ITI. For being promoted to ITI there is a departmental exam too which TA also can take but anytime after passing the departmental exam for Sr TA

