>> you should pay the balance off in full every month, not doing so is how the credit card companies make money... That's how the issuing banks make money, not

>> you should pay the balance off in full every month, not doing so is how the credit card companies make money... That's how the issuing banks make money, not Credit Card companies. AmEx is the notable exception since they issue cards through their banking subsidiaries but even in their case it's the banking side of the system that generates the profits from the interest payments.