To derive a cost per premises for the remaining 84,174 premises an average cost per premises was calculated for those premises that were over the ‘cost cap’ in the current contract.
Ar gyfer Hydref i Ragfyr 2023, roedd y 5 gweithredwr safle tirlenwi oedd yn talu’r swm mwyaf o dreth i gyfrif am 94% yr holl dreth a dalwyd.