All credit cards have interest and penalty, that's for sure.

The overdue interest of CITIC Bank's credit card is five ten thousandths of the daily interest. The calculation method of credit card interest of CITIC Bank is compound interest, and the interest included in the principal is called compound interest. If the bill is not paid in full, it will generate interest. Interest is shown on next month's bill and needs to be repaid. If the next month's bill has not been fully paid off, the interest of the first month will be added to the outstanding principal of the bill and recalculated.