Commonwealth Consolidated Acts Commonwealth Consolidated Acts(1) This section applies for the purposes of the following provisions:
(a) subsection 65A(2); and
(b) subsection 66(5).
(2) For the purposes of this Act, the amount specified in those provisions in relation to a child support period that begins in a particular calendar year is taken to be the amount worked out using the formula:
where:
"base September quarter index number" means the index number for the September quarter of 2005.
"highest September quarter index number" means the highest index number for a September quarter since the base September quarter index number (and including the base September quarter).
"index number" for a quarter is the All Groups Consumer Price Index number that is the weighted average of the 8 capital cities and is published by the Australian Statistician in respect of that quarter.
(3) Subject to subsection (4), if at any time (whether before or after the commencement of this subsection) the Australian Statistician publishes an index number for a quarter in substitution for an index number previously published by the Australian Statistician for that quarter, the publication of the later index number is to be disregarded for the purposes of subsection (2).
(4) If at any time the Australian Statistician changes the index reference period for the Consumer Price Index, regard is to be had, for the purposes of applying subsection (2) after the change takes place, only to index numbers published in terms of the new index reference period.