O 1 Ebrill 2013, ar y cyd â llywodraeth leol, cyflwynodd Llywodraeth Cymru Gynlluniau Gostyngiadau’r Dreth Gyngor ledled Cymru, a’r rheini wedi’u rhagnodi’n ganolog. Sefydlwyd y Cynlluniau mewn ymateb i benderfyniad Llywodraeth y DU i ddiddymu Budd-dal y Dreth Gyngor a darparu 10% yn llai o gyllid ar gyfer trefniadau i gynnig cymorth y Dreth Gyngor yn y dyfodol.
From 1 April 2013, in collaboration with Local Government, the Welsh Government required the introduction of centrally prescribed Council Tax Reduction Schemes across Wales.  We established the Schemes in response to the UK Government’s decision to abolish Council Tax Benefit and to cut by 10% the amount of funding available for future arrangements to provide Council Tax support.