s 41 Ascertainment of adjusted income or adjusted loss from a business for an accounting period
(1) Subject to this section, where for the purposes of this Act it is necessary to ascertain the adjusted income or adjusted loss of a person from a business for the basis period for a year of assessment (that basis period being in this section referred to as the relevant period) and accounts of the business have not been made up for the relevant period— (a) that person’s adjusted income or adjusted loss from the business shall be ascertained for any accounting period for which accounts of the business have been made up (being a period which either falls into or overlaps the relevant period) by applying Chapters 3 and 4, whenever and as often as may be necessary, as if that accounting period were the basis period for that year of assessment; (b) such apportionment of the adjusted income or adjusted loss for any such accounting period, and such aggregation of the adjusted income or adjusted loss for any such accounting period (or of any apportioned part thereof) with the adjusted income or adjusted loss (or any apportioned part thereof) for any other such accounting period, shall be made as is necessary to arrive at the adjusted income or the adjusted loss for the relevant period; and (c) the adjusted income or the adjusted loss so arrived at shall constitute the adjusted income or the adjusted loss, as the case may be, from the business for the relevant period. (2) The apportionment referred to in paragraph (1)(b) shall be made in relation to any accounting period which overlaps the relevant period, the apportionment being made, unless the Director General having regard to the circumstances of any particular case otherwise directs, in the proportion that the number of days of the overlapping period that fall into the relevant period bears to the total number of days of the overlapping period. (3) This section shall not apply if there is any part of the relevant period for which no accounts of the business have been made up. Chapter 5—Statutory income