Reform of the Spanish Casa de la Contratación

Timeline

1. 1516–1518Spain · SpainAfter Charles I ascended the Spanish throne in 1516, facing progress in the conquest of Mexico and a surge in American trade, he urgently needed to strengthen fiscal and administrative control over the colonies. The functions of the Casa de la Contratación, established in 1503, were no longer adequate for the new situation, and the crown began preparing reforms to centralize management of transatlantic commerce and exploration licenses.
2. 1518Seville Casa de la Contratación · AndalusiaThe 1518 reform reinforced the Casa de la Contratación's status as the sole gateway to American trade: all ships bound for the West Indies had to register in Seville and undergo inspection, and cargo tariffs were collected uniformly by the Casa. The reform also expanded its jurisdiction over the custody of nautical charts, crew registration, and exploration licenses, curbing smuggling and increasing royal revenue.
3. 1518–1520Seville · AndalusiaThe reformed Casa became the administrative-commercial hub of the Spanish colonial empire, providing an institutional guarantee for Magellan's circumnavigation (departing in 1519) and subsequent conquest expeditions to Peru and elsewhere. Seville was thereby established as the single channel through which American silver and goods entered Europe, until port privileges were transferred in the early 18th century.