This paper investigates the impact of markets on moral reasoning. Whereas the current literature focuses on morally relevant decisions that arise in markets, little is known about whether the exposition to markets shapes subsequent moral reasoning. To close this gap, we run a large-scale online experiment with 3 conditions: In Baseline, participants make a choice in a moral dilemma. In the other two conditions, participants are exposed to either a Non-market or Market environment, before facing the identical choice in the moral dilemma. We hypothesize that being exposed to Market induces cost-benefit considerations, which translate into modified reasoning in the subsequent moral dilemma. Compared to the baseline distribution, we indeed find a substantial effect in Market. However, similar choices can be observed in Non-market. We discuss potential explanations for these results, and suggest avenues for future research.