Mae Gorchymyn Cynulliad Cenedlaethol Cymru (Ffioedd a Thaliadau Swyddogion Canlyniadau) yn nodi’r uchafswm y gall swyddogion canlyniadau eu hawlio ar gyfer cyflawni’r etholiad. Mae’n ofynnol i swyddogion canlyniadau gofnodi’r swm sy’n ymwneud a’r gost ar gyfer yr etholiad ac o fewn amser penodol i gyflwyno cyfrifon o’r gost wirioneddol a’r dogfennau ategol ar gyfer gwirio. Pan gaiff yr holl gyfrifon eu gwirio, ac os caiff ymholiadau eu datrys, caiff y cyfrifon eu setlo.
The National Assembly for Wales (Returning Officers Fees and Charges) Order 2016 set out the maximum amount returning officers can claim for the delivery of the election. Returning officers are required to record amounts relating to the costs for the election and within a given time submit accounts of actual costs and supporting documentation for checking. When all accounts have been checked and queries resolved the accounts are settled.