Statistics Canada describes the valuation of exports and imports as follows:
"For Customs purposes, imports are recorded at values established according to the provisions of the Customs Act, which, since
January 1st, 1985, reflects valuation methods based on the General Agreement on Tariffs and Trade (GATT) Valuation Code System.
It generally requires the value for duty of imported goods be equivalent to the transaction value or the price actually paid.
"To determine the transaction value of imported goods, all transportation and associated costs arising in respect of the goods
being appraised prior to and at the place of direct shipment to Canada, are to be added to the price of the goods. Therefore,
Canadian imports are valued F.O.B. (Free on Board), place of direct shipment to Canada. It excludes freight and insurance costs
in bringing the goods to Canada from the point of direct shipment.
"To countries other than the United States, exports are, in principal,
valued or recorded at the values declared on export documents
which usually reflect the transaction value, i.e., actual selling price,
or in the case of a non-arm's length transaction, the transfer
price used for company accounting purposes. Canadian exports to overseas
countries are valued at F.O.B. port of exit, including
domestic freight charges to that point but net of discounts and
allowances. As of January, 1990, Canadian exports to the U.S. are
valued F.O.B. point of exit from Canada. Prior to 1990, they were valued
F.O.B. place of lading net of freight charges, discounts and
allowances."
Note that Canada and the United States have a data sharing agreement in
which import data from the U.S. are used to determine Canadian
exports to the U.S., and similarly, Canadian import data are used to
determine American exports to Canada. The reason for this practice
is that, generally, import data are of better quality than export data,
since imports are more closely scrutinized.