The institute was created on April 18, 1945, as part of the centennial celebration of the birth of the Baron of Rio Branco, the greatest and most important diplomat in the history of Brazil.

After being approved, the candidate must present the documents required by law and enroll in the Graduation and Improvement Program.

The Rio Branco Institute offers a mandatory and intense career program and three advancement courses.

[3] The IRBr's Graduation and Improvement Program, Diplomat Training Course (CFD), is a one-year-and-a-half program of studies, encompassing studies in fields such as History, Economics, Politics, Law, Foreign Policy, English, French, Spanish, Chinese, Russian and Arabic.

The thesis is evaluated by an examining board composed of first-class ministers and subsidized by opinions prepared by two rapporteurs, one internal and the other external to the institution.