(1) If a * consolidated group comes into existence on the day specified in a choice under section 703 - 50, the * head company of the group must give the Commissioner a notice in the * approved form containing the following information:
(a) the identity of the head company;
(b) the day specified in the choice on which the * consolidatable group is taken to be consolidated;
(c) the identity of each * subsidiary member of the group on that day;
(d) the identity of each entity that was a subsidiary member of the group on that day but was not such a subsidiary member when the notice is given;
(e) the identity of each entity that was not a subsidiary member of the group on that day but was such a subsidiary member when the notice is given;
(f) the identity of each entity that became a subsidiary member of the group after that day but was not such a subsidiary member when the notice is given.
(2) The notice must be given no later than:
(a) if the * head company is required to give the Commissioner its * income tax return for the income year during which that day occurs--the day on which the company gives the Commissioner that income tax return; or
(b) otherwise--the last day in the period within which the head company would be required to give the Commissioner such a return if it were required to give the Commissioner such a return.