Circular No. 434-Income Tax Estate Duty (Amendment) Act, 1985 1. The Estate Duty (Amendment) Bill, 1985 as passed by Parliament received the assent of the President on September 2, 1985 and has been enacted as Act No. 52 of 1985. This circular explains the substance of the provisions contained in the Estate Duty (Amendment) Act, 1985 (hereinafter referred to as the Amendment Act).