The principal rules were published in the Gazette of India, Extraordinary, Part-II, Section-3, Sub-section (ii) vide number S.O. 969 (E) dated the 26th March, 1962 and was last amended vide notification number S.O. 2747(E) dated the 19th August, 2016.
Please click on the below link to download the rules:
Income-tax (22nd Amendment) Rules, 2016