(1) Proceedings for the refund or recovery of tax paid or purportedly paid under a taxation law, whether before or after the commencement of this section, must not be brought, whether against the Commissioner or otherwise, except as provided in this Part.
(2) This Part has effect despite the provisions of another taxation law.
(3) Subsection (1) and section 19 do not apply to a taxpayer if the taxpayer claims to be entitled to receive a refund or to recover tax paid or purportedly paid under a taxation law by reason of the invalidity of a provision of that law.
(4) In this Part, "proceedings" includes—
(a) seeking the grant of any relief or remedy in the nature of certiorari, prohibition, mandamus or quo warranto, or the grant of a declaration of right or an injunction; or
(b) seeking any order under the Administrative Law Act 1978 .
S. 18(5) inserted by No. 10/2001 s. 10(1).
(5) For the avoidance of doubt, it is declared that an amount by which tax is overpaid is taken to be tax for the purposes of this Part.