Originally Posted by
XFed2001
Am an American who lives in Ontario part-time; what is best Mastercard to get to use at Canadian Costco stores? I would like to get one that provides frequent flyer miles if possible. I have a Visa for the US Costco shopping.
US Costco cash cards and US MasterCards work perfectly fine in Canada. Unless you have Canadian income, you'll need to exchange money to pay the bill anyways, which has its own costs.