公正性、递增定价机制与家庭规模

资源定价与收入税成为实现分配公正的互补机制。当消费者收入信息不对称时,经典两部制不能同时实现消费公平和收益中性。通过降低进入门槛和提高边际价格的修正性两部制可挽留低收入消费者,却对次低收入消费者不公。连续递增定价通过完美甄别消费者支付能力能兼顾收益中性和成本的公平补偿。最后,与家庭收入逆相关的私有家庭规模信息会削弱修正性两部制的功效。

Justice,Increasing Pricing Mechanism and Household Scale

Resources pricing and taxation are complementary mechanisms in achieving social justice.With asymmetry of information on consumers’ income,it is impossible for classic two-part tariff to enforce justice in consumption and revenue neutral.Modified by lowering barrier to entry and raising marginal price,nonexclusive two-part schedule detains low-income consumers,yet leading to unfairness with respect to hypo-low-income consumers.The increasing pricing mechanism with screening perfectly unknown payment capacity will succeed in compensating total cost fairly.Finally,additional asymmetric information on household scale maybe weakens effect of modified two-part tariff.