The 2026–27 National Basketball League season will be the 86th season of the Bulgarian NBL.
Contents
Teams
14 teams will participate as three teams joined the competition this season as Yambol and CSKA returned to the top flight after two years of absent, plus Polytechnica entered NBL for the first time.
Regular season
Teams plays each other twice (home and away) for total of 26 games. First 6 teams goes directly to playoffs, the teams from 7-10 are playing a play-in tournament for the last two spots of the playoffs and the teams for 11-14 will play a placement tournament. The 2026-27 champion from the second tier league has the right to join NBL next season and if he does, the 14th team relegates. if the 2026-27 runner up from the second tier league sends applications for 2027-28 NBL, will play relegation playoff with the 13th seed. The competition format was announced 30th of June after Federation meeting and the draw was held day later.
Placement Tournament
The 11th host the last four teams from the table in round robin placement tournament.
Play-in
The top six seeds advanced to the main rounds of playoffs, while the next four seeds participated in a Page playoff system tournament. The 7th-place team hosted the 8th-place team in the double-chance round needing to win one game to advance, with the winner clinching the 7th seed in the playoffs. The 9th-place team hosted the 10th-place team in the elimination round requiring two wins to advance, with the loser being eliminated from the contention. The loser in the double-chance round hosted the elimination-round game-winner, with the winner clinching the 8th seed and the loser being eliminated.