Format
Primera B Metropolitana is currently organized so, during the course of a season, each club plays the others twice (a double round robin system), once at their home stadium and once at that of their opponents.
The team that gets the most points at the end of the season is recognized as the Primera B champion and is automatically promoted to Primera B Nacional. The teams that hold the second to ninth positions have the chance to enter the Torneo Reducido whose winner will be able to play a promotion/relegation playoff against a Primera B Nacional team.
The team with the lowest aggregate points total in Primera B Metropolitana is relegated to Primera C Metropolitana. The team with the 2nd worst aggregate points total must play a promotion/relegation playoff with the winner of the Primera C Metropolitana playoff series.
Read more about this topic: Primera B Metropolitana