Craffu a rhoi sicrwydd annibynnol ynghylch rhagolygon Llywodraeth Cymru ar gyfer trethi datganoledig – treth trafodiadau tir, treth gwarediadau tirlenwi ac ardrethi annomestig – er mwyn eu cynnwys yng nghyllideb Llywodraeth Cymru ar gyfer 2018-19;Rhoi cyngor ar wella’r methodolegau ar gyfer llunio rhagolygon y dyfodol.
The aims of the contract are:The provision of independent scrutiny and assurance about the Welsh Government’s forecasts for devolved taxes – land transaction tax, landfill disposals tax and non-domestic rates – for inclusion in the Welsh Government’s budget for 2018-19Advice about improving methodologies for future years’ forecasts.