[3] The men's schedule started in December 1974 with the Australian Open and continued in May 1975 following the conclusion of the rival 1975 World Championship Tennis circuit which ran from January to early May.

Group TC consisted of the Triple Crown – the French Open, the Wimbledon Championships and the US Open – while the other tournaments were divided into three other groups – AA, A and B – by prize money and draw size.

Points were allocated based on these groups and the finishing position of a player in a tournament.

No points were awarded to first round losers and ties were settled by the number of tournaments played.

The points allocation – with doubles points listed in brackets – can be found below: These are the ATP rankings of the top twenty singles players at the end of the 1974 season[4] and at the end of the 1975 season,[5] with numbers of ranking points, points averages, numbers of tournaments played, year-end rankings in 1975, highest and lowest positions during the season and number of spots gained or lost from the first rankings to the year-end rankings.