O dan Ddeddf Llywodraeth Leol ac Etholiadau (Cymru) 2021 (“y Ddeddf”), gall awdurdodau lleol cymwys arfer y pŵer cymhwysedd cyffredinol. Ers 1 Tachwedd, mae hyn yn gymwys i brif gynghorau yn unig. O 5 Mai 2022, bydd hyn yn gymwys hefyd i gynghorau cymuned cymwys. Pennir yr amodau ar gyfer eu cymhwysedd o dan adran 30 o'r Ddeddf.
Under the Local Government and Elections (Wales) Act 2021 (“the Act”), qualifying local authorities may exercise the general power of competence. As of 1 November 2021, this only applies to principal councils. From 5 May 2022, this will also apply to eligible community councils. The conditions for their eligibility are specified under section 30 of the Act.