These powers have been used a number of times since the 2 devolved taxes started operating in April 2018 and are considered to be operating effectively.
Defnyddiwyd y pwerau hyn sawl gwaith ers i’r ddwy dreth ddatganoledig ddechrau gweithredu ym mis Ebrill 2018 ac ystyrir eu bod yn gweithredu’n effeithiol.