Section 106 of the Principal Act is amended by substituting the following for subsection (1):
"(1) If the Government by order declare that arrangements specified in the order have been made with the government of any territory outside the State in relation to -
(a) affording relief from double taxation in respect of gift tax or inheritance tax payable under the laws of the State and any tax imposed under the laws of that territory which is of a similar character or is chargeable by reference to death or to gifts inter vivos, or
(b) exchanging information for the purposes of the prevention and detection of tax evasion in respect of the taxes specified in paragraph (a),
and that it is expedient that those arrangements should have the force of law, the arrangements shall, notwithstanding anything in any enactment, have the force of law.".