“(7) For the purposes of this section— ( a ) the amounts which for the purposes of the Income Tax Acts are or fall to be treated as emoluments received by an earner from any employment shall be determined (subject to paragraph ( b ) below) disregarding sections 198, 201, 201AA and 332(3) of the 1988 Act (deductions for expenses etc); but ( b ) where an amount which is deductible in respect of any matter under any of those sections is at least equal to the whole of any corresponding amount which (but for this paragraph) would fall by reference to that matter to be included in those emoluments, the whole of the corresponding amount shall be treated as not so included.”
“365 Deductions where employment-related benefit provided (1) A deduction from earnings is allowed if— (a) the earnings include an amount treated as earnings under Chapter 10 of Part 3 (taxable benefits: residual liability to charge) in respect of a benefit, and (b) had the employee incurred and paid the cost of the benefit, the whole or part of the amount paid would have been deductible under Chapter 2 or 5 of this Part. (2) The deduction is equal to the amount that would have been so deductible. (3) For the purposes of this section, the cost of the benefit is determined in accordance with sections 204 to 206.”
“ (7) In calculating for the purposes of this section the amount of general earnings received by an earner from an employment, a deduction under any of the excluded provisions is to be disregarded. This subsection does not apply in relation to a deduction if subsection (7A) applies in relation to it. (7A) Where— (a) a deduction in respect of a matter is allowed under an excluded provision, and (b) the amount deductible is at least equal to the whole of any corresponding amount which would (but for this section) fall by reference to that matter to be included in the general earnings mentioned in subsection (7), the whole of the corresponding amount shall be treated as not included. (7B) For the purposes of subsections (7) and (7A) “excluded provision” means— (a) any provision of Chapter 2 of Part 5 of ITEPA 2003 (deductions for employee's expenses), other than section 352 (limited deduction for agency fees paid by entertainers), and (b) any provision of Chapter 5 of Part 5 of ITEPA 2003 (deductions for earnings representing benefits or reimbursed expenses).”