The knockout stage of the 2015 Campeonato Paulista will begin on 11 April with the quarter-final and will be concluded on 3 May 2015 with the final.^[1] A total of eight teams compete in the knockout stage.

All draws held at Federação Paulista de Futebol headquarters in São Paulo, Brazil.

With the exception of the final, which is played over two legs, each tie is played over a single leg, with the team with the best placing in the general table playing at home. The quarterfinals are played between the winners and runners-up of each group. In the semifinals the best team (first) will face the team with the worst campaign (fourth), while the second will face the team with the third best campaign.^[5]