The sixteen clubs were divided into two groups that played in two tournaments. In the first tournament, the Taça Guanabara, the teams played a match with each teams in the other group in a single round-robin format. The two best teams from each group advanced to the playoffs. In the second tournament, the Taça Rio, the teams from one group played within their group in a single round-robin tournament. The two best teams from each group advanced to the playoffs. The winner of both the Taça Guanabara and Taça Rio played for the state championship. If the same team won both tournaments, they were automatically declared the champion.
Updated to match(es) played on 21 April 2013. Source: www.socerway.com Rules for classification: 1 stages won 2 points; 3 wins; 4 goal difference; 5 goals scored; 6 red cards received; 7 yellow cards received; 8 draw. (Q) Qualified for the phase indicated; (R) Relegated Notes: