46. Power to make rules.

(1) The Board may, by notification in the Official Gazette, make rules for carrying out the purposes of this Act.

(2) In particular, and without prejudice to the generality of the foregoing power, rules made under this section may provide for—

[(3) The power to make rules conferred by this section shall include the power to give retrospective effect, from a date not earlier than the date of commencement of this Act, to the rules or any of them and, unless the contrary is permitted (whether expressly or by necessary implication), no retrospective effect shall be given to any rule so as to prejudicially affect the interests of assessees.]

[(4) The Central Government shall cause every rule made under this Act [and the rules of procedure framed by the Settlement Commission under sub-section (7) of section 22F] to be laid as soon as may be after it is made before each House of Parliament while it is in session for a total period of thirty days which may be comprised in one session or in two [or more] successive sessions, and if before the expiry of the session [immediately following the session or the successive sessions aforesaid], both Houses agree in making any modification in the rule or both Houses agree that the rule should not be made, the rule shall thereafter have effect only in such modified form or be of no effect, as the case may be, so however, that any such modification or annulment shall be without prejudice to the validity of anything previously done under that rule.