Contracting authorities may also carry out activities that are not for the purpose of their public function, for example, local authorities disposing of commercial waste to create a profit.
Gall awdurdodau contractio hefyd gyflawni gweithgareddau nad ydynt at ddiben eu swyddogaeth gyhoeddus, er enghraifft, awdurdodau lleol yn gwaredu gwastraff masnachol i wneud elw.