Supply Response Under Proportional Profits Taxation
证明在确定性下比例利润税不影响产出的结论在不确定性下不成立；在规模报酬不变或递增时，该税会明确扩大产出，且对更一般的等级依赖期望效用模型也成立。
Abstract A striking result in the theory of the competitive firm under certainty is the proposition that a proportional profits tax (with full offsets for losses) will have no impact on optimal output. This result does not apply under uncertainty. It is shown that, under constant or increasing returns to scale, a proportional profits tax will yield an unambiguous expansion in output. The same result is shown to hold for the more general rank‐dependent expected utility (RDEU) model.