The amounts collected by all the authorities in Wales are pooled together and redistributed to local councils by the National Assembly for Wales.
Mae ardrethi annomestig a gesglir gan awdurdodau bilio yn cael eu talu i mewn i gronfa ganolog a’u hailddosbarthu i gynghorau sir a chynghorau bwrdeistref sirol ac i awdurdodau heddlu.