After the regular season had ended, the two lowest ranked teams in the 2017–18 GET-ligaen and the two highest ranked teams in the First Division competed for the right to play in the 2018–19 GET-ligaen. The tournament was organized according to a double round robin format, where each club played the others twice, home and away, for a total of six games. The points system and ranking method used, was the same as in the regular season.
After the regular season ended, the lowest ranked team in the First Division and the two highest ranked teams in the Second Division competed for the right to play in the 2018–19 Norwegian First Division. The tournament is organized to be played over one weekend, where each club played the others once, for a total of three games. The points system and ranking method used was the same as in the regular season.