In Canada, from a 2009 article, https://www.cbc.ca/news/card-costs-who-pays-what-to-whom-1.807339 https://www.cbc.ca/news/card-costs-who-pays-what-to-whom-1.8..

In Canada, from a 2009 article, https://www.cbc.ca/news/card-costs-who-pays-what-to-whom-1.807339 https://www.cbc.ca/news/card-costs-who-pays-what-to-whom-1.8...: ==== How we pay - Credit cards account for 31 per cent of transactions. - Cash accounts for 29 per cent of transactions. - Debit cards account for 26 per cent of transactions. So what does it cost to process a transaction? The Bank of Canada survey looked at the estimated cost of processing a $36.50 transaction, which was the median cash transaction in its survey. Costs broke down like this: Debit card: 19 cents. Cash: 25 cents. Credit card: 82 cents. The study notes that the overall cost of electronic transactions falls as the volume increases, which the authors suggest, may encourage greater use of electronic payments. ====