The economic discipline plays a performative role in constructing the moral order of market society. Yet, little attention has been paid to what economists explicitly regard as moral or how they conceive of morality. This article reflects a recent attempt to put morals into economics, that is, to introduce morality as a research topic in behavioural and experimental economics. It maps three research programs that theorize the moral economy. The programs emphasize the moral foundations of market society, the moral limits of market expansion, and the moral consequences of market trading and, thus, appear irreconcilable with classifications of economists as market enthusiasts or moral agnostics. At the same time, however, the literature centres on an “economized” form of morality that is corrective to market inefficiencies, attributed to the responsibility of the individual, and expressed in rational terms. In doing so, this literature contributes to redefining moral problems in economic terms.