Deception is common in the marketplace where individuals pursue self-interests from their perspectives. Extant research suggests that perspective-taking, a cognitive process of putting oneself in other’s situation, increases consumers’ ethical tolerance for marketers’ deceptive behaviors. By contrast, the current research demonstrates that consumers who take the dishonest marketers’ perspective become less tolerant of deception when consumers’ moral self-awareness is high. This effect is driven by moral self-other differentiation as consumers contemplate deception from the marketers’ perspective: high awareness of the “moral (...) self” motivates consumers to distance themselves from the “immoral other.” The findings shed new light on how self-morality can vicariously shape social consideration in ethical judgments. (shrink)