Igokea, the defending champion, did not join the tournament until the second stage.
The competition started on 14 October 2017 and ended in the middle of May 2018.
[1] Twelve teams would join the regular season, where the first five teams qualified for the Liga 6 with Igokea, that plays the season's ABA League First Division.
On 18 September 2017, the Basketball Federation of Bosnia and Herzegovina released the calendar of the regular season.
[2] Seeded teams played games 1, 3 and 5 at home.