[1] The competition was established in 2014 as a result of a change in the structure of the league system, replacing Torneo Argentino A.

All teams with indirect membership are from outside the city of Buenos Aires (playing in regional leagues) and its metropolitan area (Greater Buenos Aires), while most of the direct members are from the aforementioned area.

The eight teams play a two-legged tie and the winners advance to the fourth stage.

The four teams play a two-legged tie and the winners advance to the fourth stage.

Both tie winners will play a final match on neutral ground to decide the champion and first promoted team to Primera Nacional.