I fod yn gymwys am ryddhad busnes mae'n rhaid:bod rhywun yn meddu'n llawn ar y safle;nad safle a eithrir ydyw at ddibenion Gorchymyn Ardrethu Annomestig (Rhyddhad Ardrethi i Fusnesau Bach) (Cymru) 2008 (er enghraifft y rheini y mae Cyngor, Awdurdod yr Heddlu, neu'r Goron yn meddu arnynt; a'r rheini sy'n cael eu meddiannau gan elusennau, clybiau cofrestredig, cyrff dielw sy'n destun trefniadau rhyddhad ardrethi elusennol arwahanol o 100%).
To qualify for relief business premises must:Be fully occupied; and,not be an excepted premises for the purposes of the Non-Domestic Rating (Small Business Relief) (Wales) Order 2008 (for instance those occupied by a council, police authority or the Crown; and those occupied by charities, registered clubs, or not-for-profit bodies that are subject to discrete 100 per charitable rate relief arrangements.)