The 87(4) exception can be illustrated by the following example.
A parent owns all of the shares of Pco, which have an aggregate adjusted cost base and fair market value of $100 and $1000, respectively. Child owns all of the shares of Cco, which have an aggregate adjusted cost base and fair market value of $500 and $1000, respectively. Pco and Cco amalgamate to form Aco, the shares of which have an aggregate fair market value of $2000. On the amalgamation, the parent is issued 50 shares of Aco with an aggregate fair market value of $500 and the child is issued 150 shares of Aco with an aggregate fair market value of $1500, such that there has been a shift of value of $500 from the parent to the child. Under paragraph 87(4)(c), the parent will be deemed to have disposed of the Pco shares for $600, being their aggregate adjusted cost base plus the gift portion of $500. Under paragraph 87(4)(e), the Aco shares received by the parent on the amalgamation will be deemed to have an aggregate adjusted cost base of $100… .
1.77
Where one predecessor corporation holds shares of another predecessor corporation, the cancellation of those shares on the amalgamation will not normally give rise to a gain or loss in the hands of the shareholder corporation.