If the minimum payment amount or more of the outstanding debt of the period is paid until the payment due date, then interest is accrued on the remaining debt amount until the next payment date or, if there is no payment, until the next cutoff date. If you pay all your outstanding debt of the period on the payment due date, no interest is accrued. On the other hand, daily interest is applied to cash advances.
Over-limit interest is the interest rate applied when the total of your purchases and cash withdrawals exceed your card limit.