ATO does not require FIFO or LIFO for basic CGT purposes
see link: http://www.ato.gov.au/individuals/content.aspx?doc=/content/36687.htm
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ATO does require LIFO for franking credits:
For the purpose of the holding period rule, if a shareholder purchases substantially identical shares in a company over a period of time, the holding period rule uses the 'last in first out' method to identify which shares will pass the holding period rule.
