“When this section applies
“(1) This section applies for the purposes of sections FE 16 and FE 18 (which relate to the valuation of the assets of a person's New Zealand group and worldwide group) and a person if—
“Optional treatment of insurance
“(2) The person may choose to include an amount of the insurance, corresponding to the amount of the impairment or the derecognised value of the asset, in the value of the total group assets of the person's New Zealand group during the period—
“Corresponding treatment for worldwide group
“(3) If a person includes an amount under subsection (2) in the value of the total group assets of the person's New Zealand group for a period, the person must include the amount in the value of the total group assets of the person's worldwide group for the period.
“Notice to Commissioner
“(4) A person choosing to apply subsection (2) for an income year must give to the Commissioner—
“Form and timing of notice
“(5) The information required by subsection (4) must be given—
“Defined in this Act: Commissioner, generally accepted accounting practice, income year, return of income, total group assets”.