22 teams, each plays the others twice - home and away - for a total of 42 games each, over 42 game weeks.
3 points for a win, 1 point for a draw, 0 points for a loss.
1. points won; 2. play-off (only for deciding promotion or relegation); 3. total goal difference; 4. total goals scored; 5. points in head-to-head matches; 6. goal difference in hth matches; 7. goals scored in hth matches.
Relegation to the league:
2 teams from 2015 Primera División
Promotion from the league:
1 place: promoted to 2016 Primera División
2-5 place: enter Promotion Play-off
* - if any of the qualified teams is also to be relegated at the end of the season, it cannot play in the Promotion Play-off, and the best placed team, not already qualified, enters the play-off instead.
Relegation from the league:
Each team's points from participation in the 2012/2013, 2013/2014, 2014 and 2015 Prim B Nacional are summed, and that total is divided by the number of games played during that period (a total of 42, 62, 104 or 142 games).
Teams are ranked in a Promedio table, based on the resulting average score.
19-22 place in the Promedio table: relegated to 2016 Prim B Metro or 2016 Torneo Federal A
Promedio table order:
1. average points score; 2. play-off (only for deciding relegation).
Promotion to the league:
2 teams from 2015 Prim B Metro
2 teams from 2015 Torneo Federal A
Changes from last season:
no teams relegated from Primera División
Colón, San Martín San Juan, Argentinos Juniors, Aldosivi, Nueva Chicago, Unión Santa Fe, Crucero del Norte, Temperley, Sarmiento and Huracán promoted to Primera División
no teams relegated to Prim B Metro
no teams relegated to Torneo Federal A
Chacarita Juniors, Los Andes and Villa Dálmine promoted from Prim B Metro
Guillermo Brown, Estudiantes de San Luis, Central Córdoba SdE, Juventud Unida G., Unión Mar del Plata, Atlético Paraná and Gimnasia Mendoza promoted from Torneo Federal A
4 teams from the Regular Season contest one place in 2016 Primera División in a knockout format.
Teams are ranked 1st-4th according to their Regular Season standings.
Teams are paired according to their ranking:
1st vs 4th;
2nd vs 3rd.
Winners are decided over two legs.
The higher placed teams from the Regular Season host the second legs.
The two Semi-finals winners meet each other with the winner becoming 2015 Promotion Play-off winner.
Winner is decided over two legs.
The higher placed team from the Regular Season hosts the second leg.
Tie-breakers for the Promotion Play-off ties over two legs:
1. aggregate score from the two legs, 2. penalties.
Promotion from the league:
winner: promoted to 2016 Primera División