In 2012 it was announced that the league become the top tier of South Australian football (below the national A-League) after the disbandment of the now defunct FFSA Super League. It was announced that the new Premier League competition would consist of 14 teams. These teams would be made up of the 10 teams from the defunct Super League with the remaining 4 spots being filled by the top 4 teams from the 2012 Premier League season.
Since 2013 the league has formed a subdivision of the NPL. The top placed team after 26 rounds will be entered into the National Premier Leagues and will play-off against teams from interstate conferences to determine a nation wide champion.
Each season, the Champion (top of the table after all rounds are completed) was promoted to the Super League and a second promotion spot was decided by the winner of the Final Five Grand Final. In the event of the Champion and Grand Final team being the same, the Grand Final runner-up was promoted. The bottom two Super League clubs were relegated to the Premier League. Also, the Champion and Grand Final winning State League clubs were promoted to the Premier League while the bottom two sides in the Premier League were relegated to the State League.
Since 2012 two teams have been relegated from the Premier League to the FFSA State League.