(1)This section applies where a claim is made under section 139 above as regards an asset or liability.
(2)For the purposes of this section—
(a)the first accrual period is the accrual period mentioned in section 139(1) above, and
(b)the second accrual period is the accrual period next occurring as regards the asset or liability while it is held or owed by the company.
(3)Any gain or part whose amount is stipulated under section 139(4)(a) above as regards the asset or liability shall be treated as not accruing as regards the asset or liability for the first accrual period.
(4)If throughout the second accrual period the asset is held, or the liability is owed, by the company solely for the purposes of a trade or part of a trade—
(a)an exchange gain of the trade or part for the accrual period shall be treated as accruing to the company as regards the asset or liability,
(b)the amount of the gain shall be the amount stipulated under section 139(4)(b) above as regards the asset or liability, and
(c)section 128(4) above shall apply.
(5)If throughout the second accrual period the asset is held, or the liability is owed, by the company solely for purposes other than trading purposes—
(a)a non-trading exchange gain for the accrual period shall be treated as accruing to the company as regards the asset or liability,
(b)the amount of the gain shall be the amount stipulated under section 139(4)(b) above as regards the asset or liability, and
(c)section 129(2) above shall apply.
(6)Where as regards the second accrual period neither subsection (4) nor subsection (5) above applies—
(a)the amount stipulated under section 139(4)(b) above as regards the asset or liability shall be apportioned for the period on a just and reasonable basis, and
(b)subsections (7) and (8) below shall apply.
(7)Where for the second accrual period part of an amount is attributed to a trade or part of a trade under subsection (6) above—
(a)an exchange gain of the trade or part for the accrual period shall be treated as accruing to the company as regards the asset or liability,
(b)the amount of the gain shall be the amount of the part so attributed, and
(c)section 128(4) above shall apply.
(8)Where for the second accrual period part of an amount is attributed to purposes other than trading purposes under subsection (6) above—
(a)a non-trading exchange gain for the accrual period shall be treated as accruing to the company as regards the asset or liability,
(b)the amount of the gain shall be the amount of the part so attributed, and
(c)section 129(2) above shall apply.
(9)In a case where—
(a)an exchange gain of a trade or of part of a trade for the second accrual period is treated as accruing to a company by virtue of the preceding provisions of this section (or would be so treated apart from this subsection), and
(b)in that period the asset or liability is to any extent held or owed by the company in exempt circumstances,
to that extent the gain shall be treated as a non-trading exchange gain (and not as a gain of the trade or part) and section 129(2) above shall apply.
(10)Any apportionment required by subsection (9) above shall be made on a just and reasonable basis.
(11)Subsections (4) to (10) above shall have effect subject to any further application of section 139 above as regards the asset or liability.
(12)For the purposes of this section a part of a trade is any part of a trade whose basic profits or losses for the relevant accounting period are by virtue of regulations under section 94 above to be computed and expressed in a particular currency for the purposes of corporation tax; and the relevant accounting period is the accounting period which constitutes the second accrual period or in which that accrual period falls.