Kvalserien was formed after the regular seasons of the Swedish Hockey League and the second-tier league HockeyAllsvenskan had been played. The two worst ranked teams in the SHL and the best four teams in HockeyAllsvenskan formed the league together with the winner of a six-round round-robin tournament between the teams ranked 4–7 from HockeyAllsvenskan. The six Kvalserien teams played each other twice, once at home ice and once on the road, giving 10 games per team and a total of 30 games. The two teams finishing first and second were promoted to the SHL the next season, while the remaining four teams played in HockeyAllsvenskan the next season.
and Timrå IK returned to Elitserien after respectively one and eighteen seasons in lesser divisions. VIK Västerås HK and Linköpings HC were relegated to HockeyAllsvenskan.
and Södertälje SK returned to Elitserien after one and three seasons, respectively, in lesser divisions. Leksands IF and IF Björklöven were relegated to HockeyAllsvenskan.
re-qualified for Elitserien and Leksands IF returned to Elitserien after one year in lesser divisions. Malmö Redhawks were relegated to HockeyAllsvenskan.
and Skellefteå AIK respectively finished first and second and qualified for play in Elitserien in the 2006–07 season. Södertälje SK and Leksands IF were relegated from Elitserien and were forced to spend the 2006-07 season in HockeyAllsvenskan.
, HockeyAllsvenskan's regular-season winners, finished with 26 points and qualified for Elitserien for the first time in club history, at the expense of Södertälje SK. Modo Hockey re-qualified for Elitserien.
defended their Elitserien spot, while Rögle BK returned to Elitserien after two years and replaced Djurgårdens IF who were relegated to the second-tier league, HockeyAllsvenskan, for the first time since the 1977–78 season. Rögle became the first HockeyAllsvenskan team in history to qualify for Elitserien by winning the playoff round to get into the Kvalserien.
For the first time since 2006, neither of the two Elitserien teams, Timrå IK and Rögle BK, managed to defend their Elitserien/SHL spot. Instead, HockeyAllsvenskan teams Örebro HK and regular-season winner Leksands IF took the two available spots for the 2013–14 SHL season. Örebro promoted to the SHL for the first time in club history, while Leksand returned to the SHL for the first time since 2005–06. Timrå were relegated to HockeyAllsvenskan for the first time since 1999–2000, while Rögle's return to Elitserien lasted for only one season.
The 40th and final Kvalserien ended with Örebro HK defending their SHL spot and Djurgårdens IF returning to the top-tier league after a two-year stint in HockeyAllsvenskan. AIK were relegated to HockeyAllsvenskan.