1, the credit card will have an interest-free period, and if it is repaid before the repayment date, no interest will be generated. If the repayment is made in installments on time, there will be a handling fee, but if it is overdue, it will generate interest (and it is still a high interest rate).

2. The way for banks to charge overdue interest on credit cards is to calculate the total bill of the current month, which is called "full interest", rather than the unpaid amount. Full interest, also known as full penalty interest, refers to the failure to repay in full by the latest repayment date. Even if a penny is missing, the full amount of the current bill will be calculated at five ten thousandths of the daily interest rate, and the compound interest will be calculated on a monthly basis. It can also be called "rolling interest".

3. Except ICBC, Agricultural Bank of China and Shanghai Pudong Development Bank, all other banks bear full interest, and ICBC is the first bank to cancel the full penalty interest of credit cards.

(1) Pufa

The interest shall be calculated in installments, and the interest shall be 0.5 ‰, and the liquidated damages shall be calculated at 5% of the unpaid minimum repayment amount. If the minimum repayment amount is within 10 yuan, there is no penalty and no upper limit.

(2) Industrial and Commercial Bank of China

Interest shall be charged on the unpaid part. If the minimum repayment amount cannot be repaid before the due repayment date (inclusive), it shall be deemed as overdue, and liquidated damages shall be charged at 5% of the unpaid part of the minimum repayment amount.

(3) Agricultural Bank of China

The interest shall be calculated in installments, with five ten thousandths of interest, liquidated damages, and 5% of the minimum repayment amount outstanding. Credit: As long as the minimum repayment amount is enough, it will not affect the credit rating.