The credit card statement date and the due date for repayment are two key concepts in the use of credit cards. To put it simply, the billing day is the day when the bank makes a summary settlement based on your consumption records and related expenses in the previous month, generates a bill, and notifies you every month. For example, if your bill date is the 19th, all purchases made before the 19th will be included in that month's bill.

The repayment due date refers to the deadline when you need to repay the consumption amount of the previous month after receiving the bill. For the above bill date on the 19th, the 7th is your repayment date, which means you need to pay off all the money in the bill on the 19th before the 7th, otherwise overdue interest may accrue. It is worth noting that the consumption on the 6th will be billed again on the billing day of the next month, which is the 19th, and needs to be returned on the repayment day of the next month.

The interest-free repayment period is a discount for credit cards, generally from the bank statement date to the due payment date. If you repay the bill in full within this period, then for non-cash transactions, You don't have to pay interest. However, this period varies depending on bank regulations. The shortest may be 20 days after the statement date, and the longest may be extended to 50 days. For example, if the bill date is the 1st and the final payment date is the 20th, the minimum interest-free period is 20 days and the longest can be 50 days.

Overall, understanding and managing billing and repayment dates is crucial to avoiding late fees and maintaining a good credit history. Remembering these dates will help you better plan and manage your credit card finances.