The purposes of this Act are—
(a) to provide for the appointment of a Parliamentary Budget Officer; and
(b) to give that Officer the functions of providing policy costing and advisory services for members of Parliament; and
(c) to amend the Parliamentary Administration Act 2005 to establish the Parliamentary Budget Office; and
(d) to make miscellaneous amendments to section 24 of the Constitution Act 1975 and to the Independent Broad-based Anti‑corruption Commission Act 2011 , the Ombudsman Act 1973 and the Parliamentary Committees Act 2003 .