While overall responsibility sits with the UK Government, the Welsh Government has levers to change the redistribution of income and wealth through the tax system to promote fairness and efficiency.
Er mai Llywodraeth y DU sydd â’r cyfrifoldeb cyffredinol, mae gan Lywodraeth Cymru ysgogwyr i newid ailddosbarthiad incwm a chyfoeth drwy’r system drethi er mwyn hybu tegwch ac effeithlonrwydd.