Is it possible to bill a US customer in Canadian dollars?
When you are selling to a customer that's located in another country you don't need to worry about exchange rates. If your customer is from another country (like a Canadian business selling to a US customer) you can issue the charge as normal. The customers card issuing bank will calculate and assess any exchange rate that is necessary. You will receive the exact amount of money that you expect. David also explains the option of multi-currency processing so that there is no exchange because you actually can choose (if you want) to charge your foreign customers in their local currency.