<prompt> Human: Pretty much ELI5 Can you make money from the cash back credit cards offer you? Whats the catch?  <response>: See rchurning for details.Yes, you can make free money off of the cash back and signging bonuses. Theres not much of a catch, as long as you pay your statement balance in full every month and dont miss any payments.Bankcards typically charge the merchant a processing fee with every transaction usually 2-3, so frankly they dont mind giving you some extra incentive to get their card even if you dont pay a dime in interest. 