The season ran from 10 September 1991 to 5 July 1992, with Quilmes and Unión de Santa Fe being relegated.
The season was divided in two separate championships, called Apertura (Opening) and Clausura (Closing).
The losing team plus the finalist and best semi-finalist of the eight-team knockout round competed in the 1992 Copa CONMEBOL.
Vélez Sarsfield played a final playoff match against Newell's Old Boys for the remaining berth in the 1993 Copa Libertadores.
At the end of the season Quilmes and Unión were relegated after finishing with the two worst points averages.