The legal milestones that have made possible the creation of an independent fiscal authority in Spain began with the reform of article 135 of the Constitution, (in Spanish) of 27 September 2011, in order to guarantee the principle of budget stability as well as the financial sustainability of our country.
In a second step, there was a reform to the Budget Stability Law which fostered the creation of an independent fiscal control institution, as one of the measures for ensuring the said constitutional mandate.
Spanish Organic Law 6/2013 was published on 14 November 2013. It fulfils this requirement and creates the Spanish Independent Authority for Fiscal Responsibility (AIReF).
Finally, its activities are duly specified in the Organic Statute of the Independent Authority for Fiscal Responsibility, as provided for in Spanish Royal Decree 215/2014 of 21 March. This regulates, among other matters, publishing, data analysis, the activities of the President and the expenditure control for the institution itself.
Law 23/2013, of 23rd December, regulating the sustainability factor and the revaluation rate of the Social Security Pensions system [in Spanish]