Prif ddiben y Gyllideb Atodol hon yw adlewyrchu'r  newidiadau cyllidebol ers Cyllideb  Atodol Gyntaf 2023-24 a gyhoeddwyd gan Lywodraeth Cymru ym mis Mehefin 2023.
The main purpose of this Supplementary Budget is to reflect the budgetary changes since the First Supplementary Budget 2023-24 published by the Welsh Government in June 2023.