As per Section 2(76) of Companies Act 2013 related party, with reference to a company, means-
(i) a director or his relative; (Definition of Relative defined later)
(ii) a key managerial personnel or his relative;
(iii) a firm, in which a director, manager or his relative is a partner;
(iv) a private company in which a director or manager is a member or director;
(v) a public company in which a director or manager is a director or holds along with his relatives, more than two per cent. of its paid-up share capital;
(vi) any body corporate whose Board of Directors, managing director or manager is accustomed to act in accordance with the advice, directions or instructions of a director or manager;
(vii) any person on whose advice, directions or instructions a director or manager is accustomed to act: Provided that nothing in sub-clauses (vi) and (vii) shall apply to the advice, directions or instructions given in a professional capacity;
(viii) any company which is—
(A) a holding, subsidiary or an associate company of such company; or
(B) a subsidiary of a holding company to which it is also a subsidiary;
(ix) such other person as may be prescribed;
‘‘relative’’, with reference to any person, means any one who is related to another, if—
(i) they are members of a Hindu Undivided Family;
(ii) they are husband and wife; or
(iii) one person is related to the other in such manner as may be prescribed;