We begin by recalling one of the surprising lessons. It does
not matter whether a tax on a good is levied on buyers or sellers of the good.
When a tax is levied on buyers the demand curve shifts downward by the size of
the tax when it is levied on sellers the supply curve shifts upward by that
amount. In either case when the tax is enacted the price paid by buyers rises
and the price received by sellers falls. In the end buyers and sellers share
the burden of the tax regardless of how it is levied.
To simplify our discussion this a shift in either the supply
or demand curve although one curve must shift. Which curve shifts depends on
whether the tax is levied on sellers the supply curve shifts or buyers the
demand curve shifts. In this chapter we can simplify the graphs by not
bothering to shows the shift. The key result for our purposes here is that tax
places a wedge between the price buyers pay and the price sellers receive.
Because of this tax wedge the quantity sold falls below the level that would be
sold without a tax. In other words a tax on a good causes the size of the
market for the good to shrink. These result should be familiar.
Comments
Post a Comment