1. Using a card has the following benefits for banks: mastering high-quality customer resources to expand related businesses.

2. Cardholders have to pay a handling fee to the bank when swiping their card to consume merchants, which ranges from 1 to 3%. Generally, the rates in the retail industry are lower, and the rates in hotels, restaurants and other entertainment venues are higher.

3. Fees and interest income from customers’ overdraft withdrawals.

4. Annual fee income (but most credit cards now waive this fee).