The Welsh Ministers already have the power to modify those tax rates and bands by means of further regulations, which are subject to the made affirmative procedure.
Mae gan Weinidogion Cymru eisoes y pŵer i addasu’r cyfraddau a’r bandiau treth hynny drwy gyfrwng rheoliadau, sy’n ddarostyngedig i’r weithdrefn gadarnhaol ‘gwnaed’.