argue that accounting conservatism decreases managerial incentives to make negative net present value investments. I develop and test a new hypothesis that accounting conservatism is associated with managers making less risky investments. I find that under more conservative accounting managers make less risky acquisitions and that firms with accounting-based debt covenants drive this association. This result is consistent with conservative firms avoiding risky investments because of the potential for large losses to trigger debt covenants. Conservatism reducing risk-shifting can in part explain debt holders׳ demand for conservative accounting.