Here are some regulations that are implemented for the 2025–26 season.
Competition There are 20 clubs in Championship, divided into two groups: Group A and Group B. Each group consists of 10 clubs based on geographical location and during the course of the season (from September to May), the teams play each other three times in a triple
round-robin system (either once home and twice away or twice home and once away) for a total of 27 games. Teams receive
three points for a win, one point for a draw, and no points for a loss. Teams are
ranked by total points, then head-to-head records, then
goal difference, and then goals scored. If still equal, fair play points and then a
drawing of lots decide the ranking.
Promotion and relegation The first-place teams from both the Group A and B earn direct promotion to
Super League, while the runners-up of each group face each other in a promotion play-off to compete for one additional promotion spot. The 10th-placed teams from both the Group A and B are directly relegated to
Liga Nusantara, while the 9th-placed teams from each group compete in a relegation play-off to determine one more team to be relegated. The 2025–26 season sees the full implementation of VAR for the first time. ==Teams==