Credit card grace period is the time period, that is between the end of your billing cycle and your payment due date. This time period is usually between 20 and 25 days, allowing you to make a payment for the prior month’s purchases without accruing any interest on those items.

So this makes the due date that is stated your statement, the time when the grace period ends. After that date, the interest will start accruing ion any unpaid portion of your balance if your APR is greater than 0%.
It is also possible that the grace period is ultimately wiped out in some cases. This happens if you typically carry a balance on your credit card from month to month, and fail to pay your accounts in full.
