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The Championship was played by 16 teams, three of which were U-21 teams, and each team played 30 games in a double round robin. The championship winner would win promotion and the two bottom placed teams would be relegated. In the previous season SC Kriens had become division champions and had won promotion. FC United Zürich had ended the season in last position and were relegated and although FC La Chaux-de-Fonds had ended in second last position they held class, because BSC Old Boys Basel voluntarily relegated. Therefore, the 2018–19 season saw three new clubs join the division, AC Bellinzona and FC Münsingen had both been promoted from the 1. Liga Classic and FC Wohlen joined after suffering relegation from the 2017–18 Swiss Challenge League.