There is no resort fee for usage of
DVC points, banked or not, so I'm assuming you are looking at a Reservation for Rent on a site other than the DIS? It sounds like this is actually a trade reservation made through Interval International and is not one that should be rented at all under the rules of the trade company. To my knowledge, the only resort fees charged to DVC Point reservations by DVC members and their guests is the Hawaiian state "Transient tax" at Aulani.