Introduction Overview Overview Section 304: Losses
1028.This section prevents losses that arise in trades outside the ring fence from being set off against ring fence profits. It is based on section 492(3) and (4) of ICTA.
1029.Where a set-off is prevented in this way, subsection (5)allowsthe loss to be carried forward and set against future profits from “related activities”, that is activities which, taken together with the ring fence trade, would be regarded as a single trade but for the specific ring fence rule in section 279.
1030.The equivalent income tax rule, originally in section 492(2) of ICTA, is in section 80 of ITA.
1031.See section 40 for rules about the extension of the loss carry-back period in a ring fence trade where allowances for abandonment expenditure under section 164 of CAA are involved; and section 43, which extends the time limit for making a claim where allowances are made under section 165 (general decommissioning expenditure after ceasing ring fence trade) or 416 (site restoration expenditure) of CAA.