The bank will usually tell you when you get the card, and you can also see it on each bill.

If your statement date is the 25th, then the interest-free period will generally be postponed for 18-25 days (interest-free periods vary by bank). Repayments within 18-25 days after the 25th will be waived. of interest.

You can repay your credit card at any time, but it must be before the final payment date. For example, if you spend money on the 8th, you can pay it back on the 9th. If your funds are tight, then you can wait until the 25th to issue the bill, and then you can push it for another 18-25 days.

Hope it can help you!