The defending champions have yet to lose so far this season, although they produced a below-par display in a slender 1-0 victory at Valenciennes on Wednesday, Edinson Cavani scoring his third goal for the club since joining from Napoli.
That victory made it 18 games without defeat for PSG in Ligue 1, a run that stretches back to the beginning of March, but they will need to be in good form to maintain that streak against a Toulouse outfit that has experienced a recent upturn in fortunes.
The capital club can overtake Monaco - who travel to Reims on Sunday - with a victory, and they will need no further incentive ahead of the visit of Alain Casanova's men.
Captain Thiago Silva (thigh) is manager Laurent Blanc's main absentee, but there is concern over the fitness of fellow defender Alex, who has also struggled with a thigh injury in the past few weeks and was brought off at half-time against Valenciennes.
PSG have an excellent record against Toulouse in recent years, winning the last eight meetings in all competitions between the two sides.
Toulouse's last win over PSG came in 2009, when they triumphed 1-0 at the Stade Municipal.
