By tradition, each subsequent monarch agreed to this arrangement upon his or her accession. Since 1 April 2012, under the terms of the Sovereign Grant Act 2011 (SSG), the Civil List was abolished and the monarch has been provided with a stable source of revenue indexed to a percentage of the Crown Estate's annual net income (currently set at 25%). This was intended to provide a long-term solution and remove the politically sensitive issue of Parliament having to debate the Civil List allowance every ten years. Subsequently, the Sovereign Grant Act allows for all future monarchs to simply extend these provisions for their reigns by Order in Council. The act does not imply any legal change in the nature of the estate's ownership, but is simply a benchmark by which the sovereign grant is set as a grant by Parliament.
