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Unilateral credit relief. | 
60.—(1) The Principal Act is amended in section 449(2)— | 
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(a)  in paragraph (a) by inserting “reduced by the relevant foreign tax” after “the amount so receivable”, and | 
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(b)  in paragraph (b), by inserting “increased by the amount of the relevant foreign tax,” after “for the relevant accounting period”. | 
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(2) Schedule 24 to the Principal Act is amended— | 
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(a)  in paragraph (9D)(1)(a) by substituting the following for the definition of relevant interest: | 
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“ ‘relevant interest’ means interest receivable by a company— | 
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(a) which falls to be taken into account in computing the trading income of a trade carried on by the company, and | 
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(b) from which relevant foreign tax is deducted.”, | 
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and | 
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(b)  in paragraph (9D)(1)(b)— | 
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(i) in subclause (i) by inserting “reduced by the relevant foreign tax” after “the amount of the relevant interest”, and | 
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(ii) in subclause (ii) by inserting “increased by the amount of the relevant foreign tax” after “for the accounting period”. | 
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(3) This section applies as respects accounting periods ending on or after 6 February. |