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Psychological accounts of dishonesty propose that lying incurs subjective costs due to threatening individuals’ moral self-image. However, evidence is restricted to indirect tests of such costs, thus limiting strong conclusions about corresponding theories. We present a more direct test of the costs of lying. Specifically, if lying is psychologically costly, individuals should feel entitled to gains they obtained through dishonesty – similar to those they actually earned through getting lucky or even investing effort. Correspondingly, in three experiments, we compared individuals’ willingness to share in the dictator game, with varying mechanisms generating the to-be-shared endowment: getting lucky, exerting (cognitive) effort, and lying. We consistently found that individuals were at least as unwilling to share an endowment obtained through dishonesty as an endowment obtained through individual effort or true luck. This …