This chapter aims to analyze one aspect of the proportionality test in the case law of the Brazilian Supreme Court: its use as a tool for deciding cases involving socioeconomic rights. If these rights are one of the core elements of a transformative constitution, using the proportionality test to decide these cases raises the question of its transformative potential. We argue that there are several reasons for concluding that proportionality does not play a transformative role in Brazil. Some of these reasons are related to the general debate on the transformative potential of litigation; others are related to how the Brazilian Supreme Court uses the proportionality test, which could be summarized as follows: First, the Court has often used the proportionality test as a rhetorical device only; second, due to peculiarities of the decision-making process of the Court, proportionality has never been employed by the majority of its judges; third, in the realm of socioeconomic rights, the role of proportionality has been frequently undermined by other types of reasoning.