If a user transfers Canadian dollars to an exchange that only deals in U.S. dollars, the bank or the exchange will convert the CAD to USD for a fee.
In addition to transaction fees and fund transfer fees, traders may have to pay currency conversion fees, depending on the currencies that are accepted by the Bitcoin exchange. If a user transfers Canadian dollars to an exchange that only deals in U.S. dollars, the bank or the exchange will convert the CAD to USD for a fee. Transacting with an exchange that accepts your local currency is the best way to avoid the FX fee.