If a team wins both periods, no final is played and it automatically rises to the highest level.

In 2017, Lierse became champion of the league, but no promotion was allowed because they did not win a period.

The 2020–21 and 2021–22 seasons no longer involved two separate competitions, but rather one quadruple round-robin league in which all teams play each other four times.

At the end of the season, the top-ranked team was crowned champions and promoted, while the second-placed team earned a two-legged promotion playoff against the 17th-place finisher from the Belgian First Division A for a place in the top division.

Promotion/relegation playoffs are no longer organized, only the top and the bottom team at the end of the season change leagues.

As of the 2020–21 season, Eleven Sports acquired the broadcasting rights to all professional league games (1A, 1B and the Super Cup) in Belgium.