(1) In this section 'payroll liabilities' means -
(a)the amount of income tax which the company is required, by or under Chapter 4 of Part 42, to remit to the Collector-General for the relevant payroll period in respect of emoluments, as defined in section 983, paid to, or on account of, all employees and directors,
(b) the amount of Pay Related Social Insurance Contributions in respect of the reckonable earnings and reckonable emoluments of all directors and employees which the company is required to remit to the Collector-General for the relevant payroll period by or under the Social Welfare Acts, and
(c) any other amount of levies or charges the company is required, by or under Parts 18A, 18B or 18D, to remit to the Collector-General for the relevant payroll period;
'relevant payroll period' means the period -
(a) beginning at the time the period immediately preceding, and equal in length to, the accounting period in which the expenditure was incurred begins, and
(b) ending at the t
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