Unlock Advanced Research with PRISMAI Integrated with over 4 crore judgments and laws — designed for legal practitioners, researchers, students and institutions - Know your Kanoon - Doc Gen Hub - Counter Argument - Case Predict AI - Talk with IK Doc - ... Upgrade to Premium Document Options Get in PDF Print it! [Cites 0, Cited by 0] [Section 28AB] [Entire Act] Union of India - Subsection Section 28AB(6) in Income Tax Rules, 1962 (6)The certificate shall be valid for the financial year specified therein unless it is cancelled by the Assessing Officer at any time before the expiry of the said financial year.