How To Change Your Card On Cash App? In the event that you truly want to change the card related with your cash application, you ought to go into the "My Money" part of the application and select the "Add Bank" decision. Starting there, you will really need to add another charge or Mastercard. If you right currently have a card related with your record, you can generally pick the "ChangeCard" decision. Precisely when you have sought after your decisions, try to hit "Save" to affirm the changes.