Fel rhan o’r cyhoeddiad, rhoddodd Llywodraeth y DU fanylion ynghylch maint cyffredinol yr amlen ariannol ar gyfer yr Adolygiad o Wariant. Ar yr ochr adnodd, mae hyn yn fwy na'r symiau a oedd wedi’u cynnwys yng Nghyllideb mis Mawrth, wedi’i ariannu gan y cynnydd yng nghyfraddau Yswiriant Gwladol. Nid yw'r symiau cyfalaf wedi newid ers Cyllideb mis Mawrth.
As part of its announcement, the UK Government provided detail of the overall size of the envelope for the Spending Review.  On the resource side, this is bigger than the amounts included in the March Budget, funded by the increase to National Insurance rates. The capital amounts are unchanged since the March Budget.