The second supplementary budget also details some of the additional funding made available to Wales as a result of decisions made by the UK Government to increase spending in devolved areas.
Mae'r ail gyllideb atodol hefyd yn manylu ar rywfaint o'r cyllid ychwanegol sydd ar gael i Gymru o ganlyniad i benderfyniadau a wnaed gan Lywodraeth y DU i gynyddu gwariant mewn meysydd datganoledig.