This dissertation aims to analyze the quantification of the disgorgement of profits, based on the conviction that the improper use of a third party s right can never be a good deal. Initially, it will be demonstrated that unjust enrichment is the most appropriate institute for dealing with situations in which one person benefits unfairly at the expense of another. The criteria that need to be met in order to characterize this type of enrichment will be thoroughly analyzed, such as the increase in the intervening party s assets, obtaining the advantage at the expense of others, the absence of just cause and the subsidiarity of the institute. Next, objective methods will be explored to calculate the amount that must be returned to the holder of the violated right, pointing out the inapplicability of the double limit theory to cases of profit from intervention, as well as the reasons why the amounts paid as reparation of moral damages must not be deducted from the amount to be refunded. It is also argued that it is inappropriate to compensate profit for damage within the context of unjust enrichment. Finally, the role of good faith and bad faith in the intervenor s conduct will be discussed, where the work will explore the divergences in the doctrine on the subject, concluding that if the intervenor acts in good faith he must restore the market value of the advantage obtained and the profit from the intervention must be shared between the intervener and the right holder, in proportion to the contribution of each one. As for bad faith, it is concluded that, in addition to the amount due for the use of the asset, the intervener must refund all the profit obtained from the intervention. This approach will provide a detailed analysis of the legal and ethical aspects involved in quantifying the profit from the intervention, contributing to a deeper understanding of the topic in the context of Brazilian Law.