Defnyddir fformiwla gyffredin sy’n seiliedig ar anghenion, wedi ei redeg gan y Swyddfa Gartref, i ddosbarthu cyllid i heddluoedd Cymru a Lloegr, ac mae’r dull o bennu a dosbarthu elfen Llywodraeth Cymru o ddarpariaeth cyllid yr heddlu yn seiliedig ar yr egwyddor o sicrhau cysondeb a thegwch ar draws Cymru a Lloegr.
A common needs-based formula, operated by the Home Office, is used to distribute funding across English and Welsh police forces, and the approach to setting and distributing the Welsh Government’s component of police funding provision is based on a principle of ensuring consistency and fairness across England and Wales.