Debit card is a credit tool issued by the issuing bank to the society, which has the functions of transfer settlement, cash deposit and withdrawal, shopping consumption and so on. Debit cards do not have overdraft function, and the consumption feature is "deposit first, then consume". In order to obtain a debit card, the cardholder must open an account with the card issuer and keep a certain amount of deposit. When cardholders pay by debit card, the payment is directly transferred from their account in the issuing bank to the bank account of the merchant who sells or provides services. Therefore, the funds in the debit card actually come from the cardholder's checking account or current account (that is, current deposit account), and the payment amount of the debit card cannot exceed the deposit amount. Debit card is a unique credit card in China. In western countries, general functions such as transfer and payment are mediated by checks, so debit cards are also called check cards.

(2) Semi-credit card

Quasi-credit card is also a kind of credit card with China characteristics, which was produced under the condition of imperfect credit mechanism in China. Its appearance and development laid the foundation for the popularization of credit cards. Quasi-credit card has some functions of credit card and debit card. Generally, it is necessary to pay a deposit or provide a guarantor. When using it, it is required to deposit before consumption, and the deposit pays interest. When shopping, you can make a small overdraft within the amount approved by the issuing bank, but the overdraft amount will bear interest from the date of overdraft and the arrears must be paid off in one lump sum. There is no interest-free repayment period and minimum repayment amount.

(3) Credit card

Credit card, in a narrow sense, is a kind of payment card that provides cardholders with consumer credit. Cardholders can "buy first, settle later, and pay later" without depositing in the issuing bank. According to the customer's credit status and other conditions, the issuing bank sets a "credit limit" for each credit card account. Generally, the issuing bank sends a bill to the cardholder once a month, and the cardholder can choose to pay off the account interest-free within a certain grace period after receiving the bill; Either pay part of the bill, or only pay the minimum amount, and pay interest later. This kind of credit card is the most widely used payment card at present, and its core features are credit sale and revolving credit.