I argue that lying in business negotiations is pro tanto wrong and no less wrong than lying in other contexts. First, I assert that lying in general is pro tanto wrong. Then, I examine and refute five arguments to the effect that lying in a business context is less wrong than lying in other contexts. The common thought behind these arguments—based on consent, self-defence, the “greater good,” fiduciary duty, and practicality—is that the particular circumstances which are characteristic of business negotiations (...) are such that the wrongness of lying is either mitigated or eliminated completely. I argue that all these “special exemption” arguments fail. I conclude that, in the absence of a credible argument to the contrary, the same moral constraints must apply to lying in business negotiations as apply to lying in other contexts. Furthermore, I show that for the negotiator, there are real practical benefits from not lying. (shrink)