Prif ddiben y Gyllideb Atodol hon yw dangos y newidiadau cyllidebol ers Cyllideb Derfynol 2019-20 a gyhoeddwyd gan Lywodraeth Cymru ym mis Rhagfyr 2018.
The main purpose of this Supplementary Budget is to reflect the budgetary changes since the Final Budget 2019-20 published by the Welsh Government in December  2018.