Mae gwella system fudd-daliadau Cymru yn rhan o ymrwymiad Cytundeb Cydweithio Llywodraeth Cymru a Phlaid Cymru i gefnogi datganoli gweinyddiaeth lles ac archwilio'r seilwaith angenrheidiol sydd ei angen i baratoi ar gyfer cyflawni hyn.
Improving the Welsh benefits system is part of the Welsh Government and Plaid Cymru Co-operation Agreement commitment to support the devolution of the administration of welfare and to explore the necessary infrastructure required to prepare for it.