Nevertheless, it was not until 25 January 1825, with the Fundamental Law of the Free State of Costa Rica, that the judicial branch took constitutional shape.

At this time Costa Rica had a high number of independent lawyers, which made it difficult to completely fulfill the obligations to the Court of Justice stipulated by the Political Constitution.

It wasn't until 1842 that a Costa Rican, Manuel Mora Fernandez, held the position of President of the Supreme Court of Justice.

A year later, this Assembly formulated a new political constitution, in which it was named the Supreme Court of Justice (Corte Suprema de Justicia) for the first time and increased the number of magistrates to seven.

The Constitution of 1859, summoned by the President Jose Maria Montealegre Fernandez, created a new position of Co-judge, that is today known as a Substitute Magistrate.

In the military coup of 1869, President José María Castro Madriz was overthrown, which provided the background to a revised new political constitution.

In future, the Court would be divided into two Chambers under the responsibility of a president, the number of magistrates returned to seven and a public prosecutor was introduced.

On 30 April 1980, the Legislative assembly approved the Law of Reorganization of the Supreme Court of Justice to improve its organization and the distribution of the work.

This time articles 10, 48, 105, and 128 were modified, creating the Constitutional Chamber of the court or Sala Constitucional with the mandate that it served to receive and process declarations of unconstitutionality for any kind of laws and regulations and of acts subject to public legislation and made up of seven magistrates finally increasing the count to 22.

The Supreme Court of Justice of Costa Rica has the following functions: The sole exception to the jurisdiction of the Judicial Power exists with the elections, where decisions correspond exclusively to the Tribunal Supremo de Elecciones, according to Article 103 of the constitution.