21Indexation—Consumer Price Index

21  Indexation—Consumer Price Index

 (1) In this section:

index number, in relation to a quarter, means the All Groups Consumer Price Index number, being the weighted average of the 8 capital cities, published by the Australian Statistician in respect of that quarter.

relevant amount means the amount specified in subsection 27(2), 29(13), (14) or (15), 30(12), (13) or (14), 36(10), 39(2), 41(1) or (3) or 43(1).

relevant year means:

 (a) the financial year starting on 1 July 2016; or

 (b) a later financial year.

Indexation

 (2) If the indexation factor for a relevant year is greater than one, this instrument has effect as if for each relevant amount there were substituted, on the later of:

 (a) the first day of that relevant year; and

 (b) the day this section commences;

an amount calculated by multiplying by that factor:

 (c) if, because of one or more other applications of this section, this instrument has effect as if another amount or amounts were substituted for the relevant amount—the substituted amount or the last substituted amount; or

 (d) in any other case—the relevant amount.

Indexation factor

 (3) For the purposes of this section, the indexation factor for a relevant year is the number calculated, to 3 decimal places, using the formula:

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base December quarter means the last December quarter before the reference December quarter.

reference December quarter means the last December quarter before the relevant year.

 (4) If the number calculated under subsection (3) for a relevant year would, if it were calculated to 4 decimal places, end with a number greater than 4, the number so calculated is increased by 0.001.

Other provisions

 (5) Subject to subsection (6), if at any time (whether before or after the commencement of this section) the Australian Statistician has published or publishes an index number for a quarter in substitution for an index number previously published for that quarter, the publication of the later index number is to be disregarded for the purposes of this section.

 (6) If at any time (whether before or after the commencement of this section) the Australian Statistician has changed or changes the index reference period for the All Groups Consumer Price Index, then, for the purposes of the application of this section after the change took place or takes place, regard is to be had only to the index number published in terms of the new index reference period.