It's difficult to forecast the future US dollar to Canadian dollar exchange rate. Many factors, including political, economic, and environmental events can influence the value of both US and Canadian currency. However, we hope our historic rates graphs can guide you in your decision to purchase Canadian dollars. Canada’s Flexible Exchange Rate. Canada’s flexible exchange rate, or floating dollar, permits us to pursue an independent monetary policy that is best suited to Canada’s economic circumstances and is focused on achieving the inflation target. Movements in the exchange rate also provide a “buffer,” helping our economy to absorb and View foreign exchange rates and use our currency exchange rate calculator for more than 30 foreign currencies.