The Spanish Parliament, known as the Cortes Generales, represents the Spanish people and exercises the State legislative power, approves its budgets, oversees the actions of the Government and has the other powers and jurisdictions assigned to it in the Constitution. The Cortes Generales is inviolable.

The Cortes Generales comprises two Houses: the Congress of Deputies and the Senate. It is consequently a bicameral parliamentary system of the imperfect bicameral type, since the powers of each House are not comparable.