Cyfartaledd y cronfeydd wrth gefn wedi'u clustnodi fel canran o wariant Cymru ym mis Mawrth 2018 oedd 12.1% o gymharu â 10.9% ym mis Mawrth 2011. Gwelwyd cynnydd o £122 miliwn yn y lefelau ers mis Mawrth 2011; mae unarddeg awdurdod wedi gweld gostyngiad dros y cyfnod hwn a unarddeg wedi gweld cynnydd.
The average of earmarked reserves as a percentage of expenditure in Wales at March 2018 was 12.1% compared to 10.9% at March 2011.  Levels have increased by £122 million since March 2011; eleven authorities have seen a reduction over this period, eleven increased.