IFCF

The International Federation of Club Football (IFCF) is the governing body that organizes several international club football competitions. This includes the IFCF Champions' League, which is considered the world championship of club football. Conceived as a successor organization to UICA, it adopted many of its competition regulations, including the carry-over of its ranking system.

The IFCF was formed by a consortium of national associations after problems at UICA led to a lapse in international club competitions between the 82nd and 84th World Cup cycles. National associations become members by virtue of submitting teams for the next edition of the competitions.

Competitions
IFCF operates six club competitions: the Champions' League, which is the world championship for club football; the Challengers Cup, for teams which fell short of qualifying for the Champions' League or were eliminated from it; the Liga B Champions' Trophy, for the world’s top second-division clubs; the Super Cup, played at the end of the season between the winners of those three tournaments; the Cup Winners Cup, for champions of domestic cup tournaments, and the Rising Stars Cup, a tournament for under-19 teams.

Any association which operates a club competition is entitled to enter one team in the Champions' League, three teams in the Challengers Cup, one team in the Cup Winners' Cup, and three eligible teams in the Liga B Champions' Trophy. Additional places in the Champions' League are granted to the top leagues in the IFCF coëfficient ranking, which takes into account results from the past five seasons of the two main tournaments. Entries to the Super Cup are restricted to clubs which qualify through another IFCF competition.

The Champions' League, Challenger's Cup, and Liga B Champions' Trophy use a format that includes a series of preliminary rounds, a round-robin group stage, and a series of knockout rounds. All knockout ties are played over two legs with each team playing one match at home, with the winner determined by the aggregate score over the two legs. The away goals rule is used if the aggregate score is level after the two legs or after extra time, and if the tie remains a draw after extra time it is decided by a penalty shoot-out. The key exception is the final, which is played as a single match at a neutral venue. The venues for finals are chosen at the beginning of the competition from among bids submitted by the member associations. During the group stage, teams are drawn into groups of four, with each team playing others in the group twice, at home and away. The top two teams of each group qualify for the knockout stage. Ties in standings points are broken, in order, by the results of the matches between the teams in question, goal difference, goals scored, away goals scored, wins, away wins, fewer disciplinary points (based on yellow cards and red cards issued in matches played), and finally by higher club coefficient.

An overview of the competition sequence and draw restrictions for each round follows. More specific details are given in the overviews of each competition in the next section.
 * Qualifying phase: Teams are divided into seeds and non-seeds based on their coefficient ranking. Teams from the same association cannot be placed into the same group.
 * Preliminary rounds: the number of rounds depends on the number of entrants.
 * Playoff round
 * Qualifying round (Challengers Cup only)
 * Group stage: Teams are drawn into groups of four and contest a round-robin. Each team plays the others in its group home and away, receiving three points for a win and one for a draw. The top two teams of each group advance to the knockout round.
 * Knockout rounds: Teams are seeded based on their final positions in the group stage, so group winners will always play against a runner-up, and play the first leg at home. Prior to the quarter-finals, teams from the same group, same association, or the same league cannot be drawn together. In the Champions' League, 16 teams enter the first knockout round, while 32 enter the first knockout round of the Challenger's Cup.
 * Quarter-finals: From this point onwards, seedings no longer apply and teams from the same league or association may be drawn against each other.
 * Final: Single match played at a venue decided in advance from bids by participating associations. The Liga B Champions' Trophy final venue also hosts the Rising Stars Cup's semi-finals and final.

Champions League
Most associations are entitled to enter one club in this competition, but based on ranking some associations are entitled to enter up to four clubs. The defending champions of the Champions' League and Challenger's Cup gain automatic entry to the group stage, and these generally do not affect an association's normal entries. During the qualifying phase, teams are divided into a champions path and non-champions path. Eight teams from each path qualify for the group stage. Up until the first knockout round, teams eliminated from the Champions' League enter the subsequent round of the Challenger's Cup:
 * Teams eliminated in the Champions' League first preliminary round enter the Challenger's Cup second preliminary round.
 * Teams eliminated in the Champions' League second preliminary round enter the Challenger's Cup third preliminary round.
 * Teams eliminated in the Champions' League third preliminary round enter the Challenger's Cup playoff round.
 * Champions' path teams eliminated in the play-off round enter the Challenger's Cup group stage.
 * Non-champions' path teams eliminated in the play-off round enter the Challenger's Cup qualifying round.
 * Teams finishing third in the group stage enter the Challenger's Cup first knockout round.

In the group stage, the defending champions of the Champions' League and Challenger's Cup and the champions from the top six ranked associations are automatically placed in pot one. Other pots are determined by coefficient ranking.

Challengers Cup
Each association may enter up to three teams in the Challenger's Cup. During the qualifying phase, teams entering from the Champions' League and the highest-ranked clubs by coefficient are seeded for the draw. The group stage features 12 groups of four teams each. The top two teams of each group advance to the first knockout round and are joined by eight teams finishing third in the Champions' League group stage (a total of 32 teams). In the draw for the first knockout round, the group winners and best four teams from the Champions' League are seeded.

Cup Winners' Cup
Each association may enter the winner of its domestic Cup knockout tournament. The competition is contested as a series of two-legged knockout rounds. This tournament is the continuation of the Cygnus Cup, which was not part of UICA but also encountered organizational difficulties in the same time period.

Liga B Champions' Trophy
This competition features second division winners and best-placed teams.

Super Cup
The Super Cup is a single round-robin between the three participating champions of the Champions' League, Challenger's Cup, and Liga B Champions Trophy.

Coefficients
Each association and club has a coefficent based on its performance in the previous five editions of the Champions' League and Challenger's Cup. They are awarded points based on progress in stages of the competition, as well as results in the group stage. Results in the other competitions do not count towards the coefficients. Club rankings determine seeding within the tournaments. Association rankings are particularly important because they grant additional entries and byes in the qualifying phase for that association's clubs.

Club coëfficient
Clubs are awarded points based on their progress in the Champions' League and Challengers Cup, and in addition they earn 2 points for a win and 1 point for a draw from the group stage onwards. During the knockout rounds, 2 points are awarded for winning the tie over two legs, and 1 point to both teams if the tie is decided in a penalty shootout.

A special case applies for teams reaching the Challengers Cup group stage, who earn a minimum of 3 points but obtain no bonus. Hence, Team A eliminated at the group stage with one win and one draw would earn the same 3 points as a Team B reaching the same stage which lost all its matches. However, Team A's association would be awarded 3 points and Team B's zero.

A club's minimum coëfficient is 20% of its association's total coëfficient, meaning it will have that coëfficient if the points it has earned in its own right are less than 20% of the association's points. Below is a summary of coëfficient points awarded to the club for reaching a given stage of the Champions' League and Challenger's Cup:

In case of a tie in rankings, clubs will be ranked by:
 * 1) points earned by the clubs themselves (disregarding the association coefficient)
 * 2) points earned by the clubs themselves in each most recent season
 * 3) their respective associations' rankings

Association coëfficient
The association coëfficient is the sum of the association coëfficients earned in the previous five seasons. Each season's association coëfficient is calculated as the sum of the coëfficients earned by its clubs divided by the number of clubs from the association which participated in the Champions' League and Challengers Cup that season.

Below is a summary of coëfficient points awarded to the association for every club reaching a given stage of the Champions' League and Challenger's Cup:

Rankings based on the association coëfficient determine the number of clubs an association may enter into the following season's competitions as follows:

Top ten associations and clubs
At the completion of the 4th IFCF cycle, the top ten associations and clubs in the world according to the coefficient ranking are: