Resumen

This study aims to present financial mathematics that bankers use in their practice when they are embedded in their workplace. To that end, we observed bankers at two official banks in an inland city of Brazil. Our analysis reveals that financial mathematics actions are structured by banking systems; the actions linked to these systems are characterised by the ways the bankers address the opportunities and limitations of banking systems as cultural tools that serve as a unit of analysis and define specific actions in this context. However, at the same time, it illustrates cases where bankers deal with some limitations of the systems. In other words, while their actions are mediated by these systems, some bankers deliver customer service by considering the customer's specific situation and profile in the decision-making process, thus providing a service that the system alone cannot do.