291. For the purposes of section 290, the consideration for a supply deemed under that section to have been made by a registrant is deemed to have become due to the registrant(1) in the case of a supply of property or a service in respect of which an amount is required under section 37 or 41 of the Taxation Act (chapter I-3) to be included in computing a person’s income for a particular taxation year of the person, on the last day of February of the year immediately following the particular taxation year; and
(2) in the case of a supply of property or a service in respect of which an amount is required under section 111 of the Taxation Act to be included in computing a person’s income for a taxation year of the person, on the last day of the registrant’s taxation year in which the property or service was made available to the person.