Grace Period
Also called: interest-free period, payment grace period
A grace period is the window between a statement closing and the payment due date during which no interest accrues on new purchases — typically 21–25 days. It only survives while you pay in full: carry a balance and most issuers charge interest on new purchases from the day you make them until you're back to zero for a full cycle. Cash advances and balance transfers usually have no grace period at all, accruing interest immediately.