3. Relationship between tax revenues, deadweight loss, and demandelasticity
The government is considering levying a tax of $100 per unit on suppliers of either leather jackets or smartphones. The supply curve for each of these two goods is identical, as you can see on each of the following graphs. The demand for leather jackets is shown by DL (on the first graph), and the demand for smartphones is shown by Ds (on the second graph).
Suppose the government taxes leather jackets. The following graph shows the annual supply and demand for this good. It also shows the supply curve (S + Tax) shifted up by the amount of the proposed tax ($100 per jacket).
On the following graph, use the green rectangle (triangle symbols) to shade the area that represents tax revenue for leather jackets. Then use the black triangle (plus symbols) to shade the area that represents the deadweight loss associated with the tax.
Instead, suppose the government taxes smartphones. The following graph shows the annual supply and demand for this good, as well as the supply curve shifted up by the amount of the proposed tax ($100 per phone).
On the following graph, do for smartphones the same thing you did previously on the graph for leather jackets. Use the green rectangle (triangle symbols) to shade the area that represents tax revenue for smartphones. Then, use the black triangle (plus symbols) to shade the area that represents the deadweight loss associated with the tax.
Complete the following table with the tax revenue collected and deadweight loss caused by each of the tax proposals.
Tax Revenue | Deadweight Loss | |
---|---|---|
If the Government Taxes... | (Dollars) | (Dollars) |
Leather jackets at $100 per jacket | ||
Smartphones at $100 per phone |
Suppose the government wants to tax the good that will generate more tax revenue at a lower welfare cost. In this case, it should tax _______ because, all else held constant, taxing a good with a relatively _______ elastic demand generates larger tax revenue and smaller deadweight loss.
The government should tax more on smartphones as it is a good with relatively less elastic demand and can generate large tax revenue and smaller deadweight loss
Jackets market:
Smartphones market:
If the Government taxes.. | Tax revenue ($) | DWL ($) |
Jackets | 15000 | 10000 |
Smartphones | 30000 | 2500 |
e.g. Smartphones:
Tax revenue = (220 - 120) x 300 = $ 30000
DWL = (220 - 120) x 0.5 x (350 - 300) = $ 2500
The government should tax smartphones because, all else held constant, taxing a good with a relatively less elastic demand generates larger tax revenue and smaller deadweight loss.
(1) Since I cannot access your graph tool, I am labelling the region you need to shade in.
In both graphs, tax revenue is the green rectangular area, and Deadweight loss is area of triangle ABC.
(2)
For Leather jackets, Pre-tax quantity = 350 and After-tax quantity = 150.
For Smartphones, Pre-tax quantity = 350 and After-tax quantity = 300.
Tax revenue = Unit Tax x Quantity after tax
Deadweight loss = (1/2) x Unit Tax x (Pre-tax quantity - After-tax quantity)
Tax @100 |
Tax revenue ($) |
Deadweight loss ($) |
Leather jackets |
$100 x 150 = $15,000 |
(1/2) x $100 x (350 - 150) = $50 x 200 = $10,000 |
Smartphones |
$100 x 300 = $30,000 |
(1/2) x $100 x (350 - 300) = $50 x 50 = $2,500 |
(3) In this case, government should tax Smartphones because, taxing a good with relatively less elastic demand generates larger tax revenue and smaller deadweight loss.
Ans.
1st Graph for laether jacket market -
Suppose when the gover taxes smartphones, Graph as follows -
If govt. taxes | TR | D/W loss |
Leather jacket at $100 | $15000 | $10000 |
Smartphones at $100 | $30000 | $2500 |
Working Note -
TR of Leather jacket = 100 x 150 = $15000
D/W loss of leather jacket = 0.5 x 100 x ( 350 - 150 )
= 0.5 x 100 x 200 = $10000
TR of smartphones = 100 x 300 = $30000
D/W loss of smartphones = 0.5 x ( 350 - 300 ) x 100
= 0.5 x 50 x 100 = $2500
Blank 1 = Tax smartphones
Blank 2 = less elastic
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