Full fiscal autonomy (FFA) – also known as devolution max,[1] devo-max,[2] or fiscal federalism[3] – is a particular form of far-reaching devolution proposed for Scotland and for Wales. The term has come to describe a constitutional arrangement in which instead of receiving a block grant from His Majesty's Treasury as at present, the Scottish Parliament or the Senedd would receive all taxation levied in Scotland or Wales; it would be responsible for most spending in Scotland or Wales but make payments to the UK government to cover Scotland or Wales's share of the cost of providing certain UK-wide services, largely defence and foreign relations. Scottish/Welsh fiscal autonomy – stopping short of full political independence – is usually promoted by advocates of a federal United Kingdom.