The economic crisis that Spain has been facing since 2008 has produced significant effects in the way citizens are dealing with consumption. Beyond austerity practices and concerns about an uncertain future, there is a rising anxiety about the sustainability of current consumption patterns. Moreover, it is interesting to analyse how consumption evolves in a situation in which the budget is highly constrained. How do people from different social classes perceive consumption under these circumstances? Our contribution deals with those issues using data from a focus groups based research project whose main goal was to map necessities and consumption practices in Spain, trying to assess the impact of the crisis. In this article we will discuss the results focusing on how different groups of interviewees elaborate a discourse about it which ranges from guilt to a strong moral discourse related to the adequate level of consumption. We consider that this paper might provide a deeper knowledge of the relationship between consumption and social class in a context of financial and economic crisis.