Skellefteå AIK clinched the Swedish Championship for the first time since 1978, defeating Luleå HF 4–0 in the Finals. It was the team's second Swedish Championship in club history. Skellefteå also won the regular season for the first time since the 1980–81 season, and the second time in club history. Their 114-point finish is the highest amount of points since Färjestad BK won the 2001–02 regular season with 118 points. Luleå HF improved on the record for fewest goals surrendered in a 55-game regular season that they set last season by only having 102 goals scored against them.
Short-term contracts and the possibility of signing players affected by the 2012–13 NHL lockout was a controversial issue for several months. The board of hockey operations for Elitserien (Hockeyligan) decided to continue rejecting short-term contracts (i.e. contracts not lasting for the entire season) on 23 August 2012. On 21 September 2012, the Swedish Competition Authority (SCA) examined the matter and responded with a ruling that allowed short-term contracts. Hockeyligan appealed the SCA ruling to the Market Court. On 18 December 2012, the Market Court ruled against the SCA and allowed Hockeyligan to forbid short-term contracts. The uncertainty and concerns of legal punishment caused a number of Elitserien clubs to refrain from signing short-term contracts and await the Market Court's decision. In the end, Cody Franson played 26 Elitserien games with Brynäs, Alexander Steen played 20 games with Modo, and Matt Duchene played 19 games and Viktor Stålberg 11 games with Frölunda before their short-term contracts expired.
For the fourth consecutive season, an outdoor game was played. As part of Brynäs IF celebrating their 100th year as a club, they hosted Timrå IK on December 8, 2012, in a temporary arena called Gävlebocken ("Gävle Goat") Arena. Brynäs won the game 3–0 in front of 15,009 spectators.
The average attendance in Elitserien fell by 10.5% from 6,385 to 5,717 spectators per game, the lowest average since the 2002–03 season. The drop meant that Elitserien was fifth in average attendance among professional ice hockey leagues (fourth in Europe) – after the NHL, NLA, DEL and KHL. In the 2011–12 season, Elitserien had the second highest average attendance among professional hockey leagues (first in Europe).
There were several reasons for the decline; Frölunda HC saw an 18.1% decrease to an average of 8,588 fans per game. The second most attended team last season, Djurgårdens IF, was relegated to HockeyAllsvenskan. Nine of the eleven returning teams from last season had lower attendance numbers, with Skellefteå AIK and Luleå HF being the only teams to increase their average attendance. HockeyAllsvenskan, on the other hand, improved its attendance average this season from 2,606 to 3,227 spectators per game, an improvement of 23.8% from the 2011–12 season.