(1)This section applies if the profits of the trade are calculated before the end of the 9 month period mentioned in section 38(2).
(2)It must be assumed, in making the calculation, that any benefits, expenses or contributions which are not provided, paid or made when the calculation is made will not be provided, paid or made before the end of that period.
(3)But if the benefits, expenses or contributions are subsequently provided, paid or made before the end of that period, nothing in this section prevents the calculation being revised and any tax return being amended accordingly.