After the Clausura 2008 tournament, the champions of the Apertura 2007 and Clausura 2008 tournaments will play a home and home series to determine which team will be promoted.
In order for a team to be promoted it has to obtain a certification from the Federación Mexicana de Fútbol Asociación.
If the winner of the promotional final is not certified for promotion a home and home series is played between the highest placed certified team and the club being relegated to the Primera División A to determine which will be in the Primera División.
One team is relegated to the Segunda División each year (two short tournaments).
Reigning champions Indios could not defend their title, as León won their 3rd title in Primera División A, and earned the right to battle Indios in a two-leg aggregate to try to earn promotion to the Primera División de México.