This study aims to explore the relationship between clientelistic economies and systemic corruption under the framework of Economic Norms Theory. Pointedly, it examines the evolution of contractual mortgage credit as a percentage of GDP (representing the growth of a non-self-enforcing contract market) compared to both actual and perceived levels of corruption in Brazil in order to assess whether Brazil is exemplary of a transitioning economy under the theory of Economic Norms. The hypothesis of this paper is two-fold. First, I expect that as mortgage credit as a percentage of GDP generally increases, actual corruption will decrease. Secondly, I expect that as perceptions of corruption worsen, actual corruption will improve. The results corroborated the hypothesis: as mortgage contracts occupy a larger percentage of national GDP, perceptions of corruption worsened while actual corruption has slightly improved. These findings suggest a shifting set of public values away from clientelistic norms and towards norms associated with contract-intensive economies.