In the debate about Kant's conceptualism or non-conceptualism the relation of Kant's philosophy to that of his predecessors is systematically ignored. My project aims to fill this gap in the literature. Accordingly, I will consider the question at the heart of this debate in light of the fact that the concepts which are crucial for answering it are through and through shaped by Kant's engagement with his predecessors, especially the Wolffians. In order to do this, I will first draw a general scheme of the various sub-issues into which this question is factually divided, and then individuate the key concepts for answering each one of them. Secondly, I am going to provide an analysis of these concepts – and consequently solve the issue – in light of how the concept in question emerges from Kant's confrontation with the philosophical scenario of his time. The final result will be an articulate picture of the answer to the question of whether Kant is a conceptualist or not.