A method and system for providing a long distance conference call discount feature is disclosed. Call detail records for calls on a per call basis both in the wireline local and long distance setting and any wireless setting are assembled at a telecommunications service provider billing system for preparation of periodic billing to a subscriber. A discount feature engine reviews a periodic billing record and determines the overlapping long distance call charges. The call with the highest long distance charges may be removed from consideration. The long distance charges for one or more of the remaining calls is reduced by a predetermined amount. The reduced long distance charges are saved in a new periodic billing record.