Turkish Basketball Second League

Regular Season Competitions: Twenty-one teams are divided into two groups (A and B), one group of ten teams and one group of eleven teams. Regular season competitions are played in two round-robin format, with away games. Based on the points tally after these competitions:

In each group, a total of four teams ranked first and second in each group qualify for the Play-Off Quarterfinals.

A total of eight teams ranked third, fourth, fifth, and sixth in their groups qualify for the Play-Off Qualifying Round to qualify for the Play-Off Quarterfinals.

The teams finishing seventh, eighth, and ninth in the ten team group, and the seven teams finishing seventh, eighth, ninth, and tenth in the eleven team group, will complete the season.

The two teams finishing last in their group will lose their right to play in the TB2L the following season.

In the Play-Off Elimination Round, the paired teams will face off in a two elimination match, one at home and one at their opponent's home turf.

Play-Off Quarterfinal Matches are played between the four teams that finished in the top two places in their groups at the end of the regular season and the four teams that advanced to the next round as a result of the Play-Off Elimination Round, each with two wins.

Play-Off Semifinals are played between the four teams that advance from the Play-Off Quarterfinals, with three wins. The two winning teams qualify for the Turkish Basketball League (TBL). These two teams then play a single-game final to determine the champion.