Tasg graidd y Gweithgor yw datblygu agenda gyffredin ar  gyfer diwygio sy'n sicrhau cynaliadwyedd darpariaeth gwasanaethau lleol drwy: strwythurau a phrosesau priodol – boed hynny'n gydweithio, rhannu gwasanaethau neu uno'n wirfoddol – i gyd o fewn fframwaith atebolrwydd democrataidd ac wedi’u grymuso gan swyddogaethau, pwerau a hyblygrwydd ychwanegol, y fframwaith ariannol priodol ac offer neu gymorth arall sydd ei angen ar gyfer newid.
The Working Group’s core task is to develop a shared agenda for reform which ensures the sustainability of local service provision through: appropriate structures and processes – whether collaboration, shared services or voluntary mergers – all within the framework of democratic accountability and empowered by additional functions, powers and flexibilities, the appropriate financial framework and other tools or support necessary for change.