13.
| (1) The assessable expenditure of an individual for any year of assessment shall be the expenditure incurred by him in the year preceding such year of assessment. |
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| (2) Any expenditure for the spending or disbursing of which a liability has been incurred by an assessee and which is included in his assessable expenditure for any year of assessment shall not be included in his assessable expenditure for any subsequent year of assessment. |
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Sri Lanka Consolidated Acts