Using the same data that we analysed to identify tax risks, we can measure and report on the impact over time of the activities we undertook to address tax risk.
Gan ddefnyddio'r un data a ddadansoddwyd gennym i nodi risgiau treth, gallwn fesur ac adrodd ar effaith dros amser ein gweithgareddau ar gyfer mynd i'r afael â risg treth.