The tournament would be divided in four stages:Taça Guanabara: The twelve teams all played in a single round-robin format against each other. The champions qualified to the Finalphase. The eight best teams qualified to the Second round.Taça Oscar Wright daSilva: The remaining eight teams all played in a single round-robin format against each other. The champions qualified to the Final phase.Taça Pedro Magalhães Corrêa: The eight teams all played in a single round-robin format against each other. The champions qualified to the Final phase.
Final phase: The three stagewinners played in a single round-robin format against each other. the team with the most points won the title.