This study examines whether truth-telling in the form of honest reporting is associated with cognitive moral development. Conventional agency theory assumes that people are self-interested and willing to tell a lie to increase their personal payoffs, while recent empirical evidence shows that some people give up monetary rewards to tell the truth. The social psychology literature suggests that cognitive moral development influences individuals’ ethical decisions. We carried out an experiment whereby participants submitted managerial reports in which truth-telling decreased their monetary (...) payoff. Despite the fact that their decisions were not subject to monitoring, auditing, or reputation effects, some participants reported honestly or partially honestly. We find the relationship between honest reporting and cognitive moral development to be both positive and linear. Compared with those at lower stages of cognitive moral development, participants at higher stages of cognitive moral development were more likely to submit an honest report and give up potential monetary gains from lying. We further examine the economic impact of honest reporting on the firm’s profit. With the assumption of self-interest and profit maximization, Antle and Eppen suggest that a contract with a hurdle-rate feature reduces managers’ information rent. We find that in comparison with the expected outcome of a hurdle contract, the firm can yield higher profits with a trust contract by hiring managers with a P-score higher than 16.67. (shrink)