Other peninsular kingdoms like Navarre also created its own council in 1481 by Queen Joan II and in Aragón in 1494 by King Ferdinand the Catholic.

King Charles I inherited vast territories through Europe and decided to create a new council called «of State» due to the enormous foreign policy that marked his reign.

This council started its duties in 1526 when Sultan Suleiman the Magnificent threatened Spanish possessions in Austria.

His advisors were not specialists in laws but experts in international relations, such as the Duke of Alba or Nicolás Perrenot.

As its main capacity it oversees the observance of the Constitution and the rest of the legal system by giving advice either when established by the law or required by the government.