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Tax incidence


In economics, tax incidence or tax burden is the analysis of the effect of a particular tax on the distribution of economic welfare. The concept was brought to attention by the French Physiocrats, in particular François Quesnay, who argued that the incidence of all taxation falls ultimately on landowners and is at the expense of land rent. Tax incidence is said to "fall" upon the group that ultimately bears the burden of, or ultimately has to pay, the tax. The key concept is that the tax incidence or tax burden does not depend on where the revenue is collected, but on the price elasticity of demand and price elasticity of supply.

The theory of tax incidence has a number of practical results. For example, United States Social Security payroll taxes are paid half by the employee and half by the employer. However, some economists think that the worker bears almost the entire burden of the tax because the employer passes the tax on in the form of lower wages. The tax incidence is thus said to fall on the employee. However, it could equally well be argued that in some cases the incidence of the tax falls on the employer. This is because both the price elasticity of demand and price elasticity of supply effect on whom the incidence of the tax falls. Price controls such as the minimum wage which sets a price floor and market distortions such as subsidies or welfare payments also complicate the analysis.

Imagine a $1 tax on every barrel of apples an apple farmer produces. If the product (apples) is price inelastic to the consumer the farmer is able to pass the entire tax on to consumers of apples by raising the price by $1. In this example, consumers bear the entire burden of the tax; the tax incidence falls on consumers. On the other hand, if the apple farmer is unable to raise prices because the product is price elastic the farmer has to bear the burden of the tax or face decreased revenues: the tax incidence falls on the farmer. If the apple farmer can raise prices by an amount less than $1, then consumers and the farmer are sharing the tax burden. When the tax incidence falls on the farmer, this burden will typically flow back to owners of the relevant factors of production, including agricultural land and employee wages.


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