EC120 Lecture Notes - Lecture 11: Economic Surplus, Demand Curve, Lead

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26 Oct 2015
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EC120 Full Course Notes
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Ec120 - lecture 11 - the costs of taxation. When a tax is levied on buyers, demand curve shifts to the left by the size of the tax. When it is levied on sellers, the supply curve shifts to the left by that amount. In either case, the price paid by buyers increases and the price received by sellers decreases (the difference is the tax) The buyers and sellers share the burden of the tax, regardless of how it is levied. To understand fully how taxes affect economic well-being, we use the tools of welfare economics to measure the gains and losses from a tax on a good. Buyers: measured by change in consumer surplus. Sellers: measured by change in producer surplus. The price paid by buyers rises from p1 to pb on the graph below, so consumer surplus now equals only area a.

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