In its current format, it involves the four teams that finish directly below the automatic promotion places from Segunda División to the top tier.

The two first qualified teams of each group would play a final stage with a round-robin format.

Just after the Spanish Civil War, the 1939–40 Segunda División was expanded into five groups where the winners joined the final stage.

[2] In 1958 the RFEF re-adopted the promotion/relegation play-offs system between teams from La Liga and Segunda División.

This format worked until 1999, when the LFP removed it and determined that three teams will directly promote or relegate.

For the 2010–11 season, the Segunda División adopted the Football League play-offs format.

Since the second edition, a new rule was established: in case of a tied eliminatory there were extra time, once finished it, this season introduced that there would not be penalty shoot-out and the winner would be the best positioned team.