The most important tournaments in the series are the PSA World Championship for Men's and Women's.

[1] PSA World Tour (formerly PSA World Series) will comprise most important tournaments in prize money for more experienced and higher-ranked players, including PSA World Championships and PSA World Tour Finals, labelled as following: PSA Challenger Tour tournaments will offer a $3,000–$30,000 prize-money, ideal circuit for less-experienced and upcoming players, that will include the following tiers: PSA World Tour events also have a separate World Tour ranking.

Points for this are calculated on a cumulative basis after each World Tour event.

The top eight players at the end of the calendar year are then eligible to play in the PSA World Tour Finals.

Ranking points vary according to tournament tier being awarded as follows: [2] [3] [4] The players/nations are sorted by: Following is a list of notable players (winners of a main tour title, and/or part of the PSA Men's World Rankings and Women's World Rankings top 30 for at least one month) who announced their retirement from professional squash, became inactive, or were permanently banned from playing, during the 2023–24 season: