Dywedodd hefyd wrth Dŷ'r Cyffredin y byddai'n cynnal Adolygiad Cynhwysfawr o Wariant eleni - cyllideb adnoddau blwyddyn yn unig sydd gan Gymru fel gweddill y DU - ond roedd hyn hefyd ar yr amod bod cytundeb Brexit yn cael ei gymeradwyo.
He also told the House of Commons he would carry out a Comprehensive Spending Review this year – Wales, like the rest of the UK only has a one-year resource budget – but this was also against the eventuality of a Brexit deal being agreed.