Income Tax Assessment Act 1997
If, in consequence of the *arrangement, you exchange an interest that you *acquired before 20 September 1985 for an interest in the replacement entity, the first element of the *cost base and *reduced cost base of the interest in the replacement entity is its *market value just after you acquired it. 124-800(2)
The *cost base and *reduced cost base of the interest in the replacement entity is reduced if all or part of a *capital gain from *CGT event K6 happening is disregarded because of subsection 104-230(10) . The amount of the reduction is the amount of the *capital gain you disregard under that subsection.
The full list of CGT events is in section 104-5 .
Subsection 104-230(10) provides that a capital gain from CGT event K6 is disregarded to the extent that you could have chosen a roll-over under this Subdivision if your original interest had been post-CGT.