Mae Llywodraeth Cymru wediymgynghorio’r blaen ar gynigion i ddiwygio'r system apelio ar gyfer ardrethi annomestig, a hynny rhwng 17 Hydref 2017 a 9 Ionawr 2018. Un o'r negeseuon allweddol o'r ymatebion i'r ymgynghoriad oedd na ddylid gwneud unrhyw newidiadau hanner ffordd drwy restr ardrethi annomestig, ac mai’r amser gorau i wneud newidiadau fyddai ar yr un pryd ag ailbrisio. Bydd yr ailbrisiad nesaf yn cael ei weithredu ar 1 Ebrill 2023.
The Welsh Government previouslyconsultedon proposals for reform of the NDR appeals system, between 17 October 2017 and 9 January 2018. One of the key messages from the consultation responses was that no changes should be made midway through an NDR list and the optimal timing for changes would be to coincide with a revaluation. The next revaluation will be implemented on 1 April 2023.