The Principal Act is hereby amended by the insertion in Part 34 of the following section after section 825:
"Reduction in income tax for certain income earned outside the State.
(1) In this section -
'authorised officer' has the same meaning as in section 818;
'proprietary director' has the same meaning as in section 472;
'qualifying employment', in relation to a year of assessment, means an office (including an office of director of a company which would be within the charge to corporation tax if it were resident in the State, and which carries on a trade or profession) or employment which is held -
(a) outside the State in a territory with the Government of which arrangements are for the time being in force by virtue of section 826, and
(b) for a continuous period of not less than 13 weeks, but excluding any such office or employment -
(i) the emoluments of which are paid out of the revenue of the State,
(ii) with any board, authority or other similar body established in the St
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