What's the difference between Pending and Available cash back?

Pending cash back are your earnings that cannot yet be withdrawn because the return time (90 days) on those purchases has not yet passed. Once the 90 day return time passes, the cash back for those purchases becomes Available and cash back can be withdrawn ($10 Available minimum). When your cash back, referral bonus, and other rewards statuses become "Available", they will be displayed in the "Credit" of Account Detail. Withdrawal related records will be displayed in the "Debit".