The campaign of National Premier Leagues South Australia begins in late February and runs through early September, culminating with a grand final at ServiceFM Stadium since 2022. The top team earns the Premier title and advances to the NPL finals series, while the bottom-placed and 12th teams are relegated to State League 1. Campbelltown City holds the record for most championships 7 titles; Croydon FC were the 2025 champions, and North Eastern MetroStars were the 2025 premiers. The regular season features 22 rounds in a double round-robin, followed by a finals series for the top six. SA remains part of the eight-league National Premier Leagues system in Australia. NPL SA was established in 2012 as the successor to the Super League, under Football South Australia.