Running water is the inflow and outflow of funds every month or year, and credit card running water is the monthly credit card bill, which is generally used to handle credit cards or loans.

You need to provide your bank account number in the following situations: 1. If the bank has doubts about your professional information when approving the card, you have to provide your bank account number to prove your occupation and repayment ability. 2. To apply for a higher credit card, you also need a bank running bill certificate, so that the bank can judge whether your spending power meets the card processing standards. In short, the bank running list is not a necessary condition for issuing cards, but in order to issue cards smoothly, in addition to the running list, there must be proof of assets, such as real estate license, vehicle certificate, deposit certificate and so on. The more materials you submit, the more you can prove that you have enough repayment ability, so it is easier to approve the card.