J18 Allsvenskan is the highest Under-18 league in Sweden. It is played from January to March.
J18 Allsvenskan is divided into two divisions with 10 teams in each, North and South.
The teams start the season in J18 Elit. J18 Elit is played in 4 divisions, North, East, West and South. The 5 best teams in each qualify for J18 Allsvenskan.
The 6 best teams in each of the 2 divisions of J18 Allsvenskan qualify for the Swedish U18 Championship, So does the best team in each of the four continuing J18 Elit's.
The 4 teams from J18 Elit play aganist the 5th and 6th placed teams from J18 Allsvenskan in a pre-qualification for the playoffs. The winners of these games will play the 3rd and 4th placed teams in the 1/8 finals. The top 2 teams of each J18 Allsvenskan North ans South enter the playoffs in the quarter finals.
The winner of the playoffs is named Swedish Under-18 Champion.