Pigovian Tax - Working of The Pigovian Tax

Working of The Pigovian Tax

The diagram illustrates the working of a Pigovian tax. A tax shifts the marginal private cost curve up by the amount of the tax. If the tax is placed on the quantity of emissions from the factory, the producers have an incentive to reduce output to the socially optimum level. If the tax is placed on the percentage of emissions per unit of production, the factory has the incentive to change to cleaner processes or technology.