Versions of s. 142.4(1), definition “tax basis”, para (p)
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an amount in respect of the obligation that was deducted under paragraph 20(1)(p) in computing the taxpayer’s income for a taxation year ending at or before that time, or
an amount in respect of the obligation that was deducted under paragraph 20(1)(p) in computing the taxpayer’s income for a taxation year ending at or before that time, or