Acquisition of rights or options and their cost base
If you own shares or units, you may be issued rights or options to acquire additional shares or units at a specified price.
If the rights and options are offered at no cost, you are taken to have acquired them at the same time as you acquired the original shares or units. Therefore, if you acquired the original shares or units before 20 September 1985, any capital gain or capital loss you make from the sale of the rights or options is disregarded.
If you acquired your original shares or units (or rights or options from another entity) on or after 20 September 1985, they are treated much like any other CGT asset and are subject to CGT. This is also the case if you paid the company or trust for them.