Cortes de Monzón (1289) were Aragonese courts where an important parliamentary task was carried out: 35 constitutions or ordinations were promulgated that endowed the Crown with solid administrative structures. The definition of the limits of the jurisdictions, the independence of the officials in relation to the lords, the regulation of the administration of justice and the creation of a regular financing by means of a tax common to all or "of the general", were pursued with them. for its universality. This tax would end up originating own institutions in the States of the Crown calls Diputaciones del General or Generalities. Alfonso III of Aragon also undertakes not to separate from the Crown the Kingdom of Mallorca and to implicitly accept the institution of the Royal Council.
The king needed funding for Crown expenses. At the beginning of the sessions of the Cortes Generales de Monzón, Catalans and Majorcans offered the economic help to the king so that he could finish his wars against Castile and France and, with the purpose of recovering it, they proposed a tax collection institution, the tax of Generalities, which would be applied in all the borders of the exclusive states of the Crown of Aragon. This fiscal institution would eventually develop, in charge of collecting it, some powers that were developed in deputations with more and more powers, not only prosecutors, but politicians, the General Deputies or Generalities, which ended up constituting the Generalitat de Aragón, the one in Valencia and the one in Catalonia.
The monarchy emerged strengthened from these Cortes.
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