13. Powers and duties of Minister
(1) The powers conferred and the duties imposed upon the Minister by or under the provisions of a tax Act may-
(a) be exercised or performed by the Minister personally; and
(b) except for the powers under sections 14 and 257, be delegated by the Minister to the Deputy Minister or Director-General of the National Treasury.
(2) The Director-General may in turn delegate the powers and duties delegated to the Director-General by the Minister to a person under the control, direction or supervision of the Director-General.