Question: Is the exchange rate from $CDN to U$ used in these calculations? If not, how are currencies of other countries treated, such as Norway, Great Britain? Since Canada`s social security plan includes a specific retirement plan in the province of Quebec, an additional agreement was entered into with Quebec to extend the agreement to that province, also with effect from August 1, 1984. The terms of the agreement between the United States and Canada and the agreement between the United States and Quebec are very similar and, unless otherwise stated, references to the agreement between the United States and Canada also apply to the agreement between the United States and Quebec. You should inform Social Security of your QPP benefit just before you receive your first payment. SS collects additional information about your QPP and decides how much your social security benefit should be reduced.