(1)A person may make a claim for carry-forward trade loss relief if—
(a)the person has made a loss in a trade in a tax year, and
(b)relief for the loss has not been fully given under this Chapter or any other provision of the Income Tax Acts or under section 261B of TCGA 1992 (use of trading loss as a CGT loss).
(2)The claim is for the part of the loss for which relief has not been given under any such provision (“the unrelieved loss”) to be deducted in calculating the person's net income for subsequent tax years (see Step 2 of the calculation in section 23).
(3)But a deduction for that purpose is to be made only from profits of the trade.
(4)In calculating a person's net income for a tax year, deductions under this section from the profits of a trade are to be made before deductions of any other reliefs from those profits.
(5)This section applies to professions and vocations as it applies to trades (and section 84 is to be read accordingly).
(6)This section needs to be read with—
(a)section 84 (how relief works),
(b)section 85 (use of trade-related interest and dividends if trade profits insufficient),
(c)section 86 (trade transferred to a company),
(d)section 87 (ring fence trades),
(e)section 88 (carry forward of certain interest as loss), and
(f)sections 17(3) and 852(7) of ITTOIA 2005 (effect of becoming or ceasing to be UK resident).