Can an average exchange rate be used in computing the gains or losses from the disposition of capital property? CRA responded:
As a general rule, the CRA will not accept the conversion of a gain or loss on the disposition of a capital property using an average exchange rate. A gain or loss is simply the arithmetic difference usually resulting from two or more separate transactions, a purchase and a sale, which generally occur on different dates. Consequently, the daily exchange rate for the particular dates should be used to determine, in Canadian dollars, the adjusted cost base ("ACB") of such property and any proceeds of disposition from its disposition.