Credit cards will have an interest-free period. If you repay before the repayment date, no interest will accrue. If you repay the installment on time, you will also be charged a handling fee, but if it is overdue, there will be interest ( And it’s still high interest). \x0d\The way banks charge credit card overdue interest is based on the total amount of the monthly bill, which is called "full interest calculation", rather than on the amount of the unpaid portion. Full interest, also called full penalty interest, means that if you fail to repay in full by the latest repayment date, even if the difference is one penny, you will be charged 0.05% of the full amount of the current bill. Daily interest is calculated, and compound interest is calculated on a monthly basis, which can also be calculated as "interest compounding". \x0d\:\x0d\CreditCard is a non-cash transaction payment method. It is a small credit payment tool provided by banks to users to consume first and repay later. The earliest credit card appeared at the end of the 19th century. \x0d\Credit cards are divided into two types: credit cards and quasi-credit cards. They provide settlement services, facilitate shopping and consumption, and enhance a sense of security; simplify payment procedures and save social labor; promote product sales and stimulate social demand. A credit card is a special credit card issued by a bank or other financial institution to those with good credit status. It is a special card used for shopping and consumption at designated merchants, or for depositing and withdrawing cash at designated banking institutions.