The tournament used the same format as the previous three seasons. The competition began with a group stage featuring sixteen teams divided into two groups. Matches were played in a double round-robin system with home-and-away fixtures, fourteen in total for each team. In Groups A and B, the top two teams automatically qualified for the quarter-finals, with teams ranked 3rd to 6th entering the playoff round.
The knockout stage included four rounds: the playoffs, quarter-finals, and a final-four tournament comprising two semifinals and the final. In the playoffs, eight teams were paired against each other in two-legged home-and-away matches (third-placed in group A played sixth-placed group B; fourth-placed group A plays fifth-placed group B, etc.). The four aggregate winners of the playoffs advanced to the quarterfinals, joining the top-two teams of Groups A and B. The eight quarterfinalist teams were paired against each other in two-legged home-and-away matches, with the four aggregate winners qualifying to the final-four tournament.
In the final four tournament, the semifinals and the final were played as single matches at a pre-selected host venue.
Rankings
This season, the EHF decided to make separate rankings for each club competition.[2]
Associations 1–9 had their league champion qualify for the group stage and apply for a wildcards.
The Association that won the past season's EHF European League gad their league champion and runner up qualify for the group stage but cannot apply for a wildcard.
Associations below the top 9 had their league champion apply for a wildcard.
20 teams applied for a place, with ten having a fixed place.[4] The final list was announced in June 20, 2023.[5][6]
The fixed place for Russia was vacant since the country and its clubs were not admitted to participate in the EHF competitions due to the Russian invasion of Ukraine.[7]
The 16 teams were drawn into two groups of eight. Teams from the same national association could not be drawn into the same group.
In the group stage, teams were ranked according to points (2 points for a win, 1 point for a draw, 0 points for a loss). After completion of the group stage, if two or more teams have scored the same number of points, the ranking will be determined as follows:
Highest number of points in matches between the teams directly involved;
Superior goal difference in matches between the teams directly involved;
Highest number of goals scored in matches between the teams directly involved;
Superior goal difference in all matches of the group;
Highest number of plus goals in all matches of the group;
Drawing of Lots
A total of 11 national associations will be represented in the group stage. North Macedonia are the only returnees, after Vardar 1961 was disqualified last season. Kolstad Håndball are the only debutants.