Disclosure of information relating to assessees
(1)
The Board or any other income-tax authority specified by it by an 45 order in this behalf, may furnish or cause to be furnished to—
(2)
The Principal Chief Commissioner or Chief Commissioner or Principal Commissioner or Commissioner may furnish or cause to be furnished to a person, the information relating to any assessee received or obtained by any income-tax authority in the performance of his functions under this Act,––
(3)
Irrespective of anything contained in sub-section (1) or (2) or any other law in force, the Central Government may, having regard to the practices and usages, customary or any other relevant factors, by notification, direct that no information or document shall be furnished or produced by a public servant in respect of such matters relating to such class of assessees except to such authorities as specified in that notification.