2017–18 Primera B Nacional

The teams placed 2nd to 9th compete in the "Torneo Reducido" for the second promotion after the regular season ends.

Tournament rules establish that, unlike any other position on the table, if two or more teams are equal in points at the end of play, goal difference does not count and a playoff game is required.

The winner of this match achieved promotion to Primera División as champions, while the loser advanced to the Torneo Reducido as runners-up.

Teams ending in positions 2 to 9 play the Torneo Reducido for a second Promotion to Primera División.

The finals are played on two legs, and a penalty shootout will occur in case of a tie.