Circular No. 159 – Income Tax The Interest-tax Bill, 1974, as passed by Parliament, received the assent of the President on 23-9-1974 and has been enacted as the Interest-tax Act, 1974 (45 of 1974). Section 27 of the Interest-tax Act, 1974 empowers the Board to make, subject to the control of the Central Government, rules for carrying out the purposes of the Act. The Board has, in exercise of this power