Section 83 Expenses of management of investment companies
(1) For the purposes of this section and of the other provisions of the Corporation Tax Acts relating to expenses of management, “investment company” means any company whose business consists wholly or mainly of the making of investments, and the principal part of whose income is derived from the making of investments, but includes any savings bank or other bank for savings.
(2) In computing for the purposes of corporation tax the total profits for any accounting period of an investment company resident in the State-
(a) there shall be deducted any sums disbursed as expenses of management (including commissions) for that period, except any such expenses as are deductible in computing income for the purposes of Case V of Schedule D; but
(b) there shall be deducted from the amount treated as expenses of management the amount of any income derived from sources not charged to tax, other than franked investment income.
(3) Where in any accounting period of an investment company the expenses of management deductible under subsection (2), together with any charges on income paid in the accounting period wholly and exclusively for the purposes of the company’s business, exceed the amount of the profits from which they are deductible, the excess shall be carried forward to the succeeding accounting period, and the amount so carried forward shall be treated for the purposes of this section, including any further application of this subsection, as if it had been disbursed as expenses of management for that accounting period.
(4) For the purposes of subsections (2) and (3), there shall be added to a company’s expenses of management in any accounting period the amount of any allowances to be made to the company for that period by virtue of section 109 or774.
Finance Act 2003 section 41(1)(a)(ii).