Check out this link from the Bank of Canada website. You have to scroll down to the bottom of each page to get the exact dates each note was released The $100 note (2011) The $20 & $50 notes (2012) The $5 & $10 (2013) Why? They are supposed to last longer (which seems true b/c they rarely issue new prefixes). Mind you, Canadians are using cash much less then ever before.