parent nodes: Optional Rules
The Game Master may also assign experience points for treasure gained, at a rate of 1 GP = 1 XP. This is optional; GMs wishing to advance their players to higher levels more quickly may choose to do this, while those preferring a more leisurely pace should omit it. If experience is awarded for treasure, it should be awarded only for treasure acquired and returned to a place of safety. Alternately, the GM may require treasure to be spent on training in order to count it for experience. This is a highly effective way to remove excess treasure from the campaign.