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“Prof. Alex tabarrok today we re going to start looking at subsidies. We re going going to move quite quickly because if you ve understood the material on taxes the on subsidies should follow pretty easily. However if you haven t understood the material on taxes.
This is going to be even more mysterious so make sure you understand taxes before we move on to subsidies here. We go now a subsidy is really just a negative or a reverse tax instead of taking money. The government gives money to consumers or producers. Now here are some economic truths about subsidy.
Who gets the subsidy does not depend on who receives the check from the government once again. The legal incidence of the subsidy who gets the check is not the same as the economic incidence that should always already be familiar from our discussion of taxes similarly who benefits from the subsidy does depend on the relative elasticities of demand and supply again just as with taxes finally subsidies must be paid for by taxpayers. So instead of revenues. There s a cost to a subsidy and they create an inefficient increase in trade also called a deadweight loss.
Let s take a look in more detail. Okay we have a lot to cover in this diagram. So put on your thinking hats. We begin as usual at the market free market equilibrium.
Let s say that s at price of two dollars. And this quantity now. I m not going to go through the proof that the legal incidence of who gets the subsidy does not influence the economic incidence instead. I m going to jump right to the key point.
Which is that a subsidy drives a wedge between the price received by sellers. And the price paid by the buyers. The only difference from the tax is that the price received by sellers with the subsidy is going to be more than the price paid by the buyers. So we can use the same wedge analysis that we used before except.
We re going to drive the wedge into the diagram from the right hand side so now consider the height of this wedge. Let s suppose that s a dollar and let s drive it in to the diagram until the top hits. The supply curve and the bottom hits. The demand curve.
This is now going to tell us everything we need to know so at the top at point. B this tells us the price received by. Sellers suppose that s 240 the bottom at point. D tells us the price paid by the.
Buyers. 140. Notice that the price received by the sellers has got to be 1 more than the price paid by the buyers. The 1 coming from the subsidy.
Notice also the key idea it doesn t matter. Whether the suppliers receive the check from the government or whether the buyers receive the check from the government on. Net when all is said and done the sellers will receive 240 per unit and the buyers will pay 140 per unit by comparing with the free market price. We can see who is getting the relative gain from the subsidy in this case.
Both the suppliers and demanders get some of the gain so the suppliers used to get 2 per. Unit now they re getting 240. So they get 40 of the. Gain the buyers used to pay.
2 now they re paying 140. So they get 60 of the gain who gets the gain is going to depend upon the relative elasticities of supply and demand and you want to convince yourself of that by drawing some more diagrams like this but draw them with a really inelastic supply curve. See what happens then draw it with a more elastic supply curve. A supply curve.
Which is more elastic than the demand curve. See what happens so test out different things next. A tax creates revenues for the government a subsidy creates costs to the government. What is the cost well notice that the per unit subsidy is 1.
That s given by the height of the wedge. What s the quantity. Which is subsidized well it s this quantity right here. So the total cost of the subsidy is 1.
Times. The quantity or the subsidy amount times. The quantity so it s given by this blue area right here finally got a lot to cover. But it should all be fairly standard now notice that what the subsidy does another effect of the subsidy.
Not surprisingly is that it increases the quantity exchanged so it increases it from quantity no subsidy to the quantity with the subsidy now on these additional units exchanged notice. What the supply and demand curve. Tells us it tells us that on those additional units. The cost to the suppliers of supplying those units exceeds.
The value to the demanders of those units. So this additional quantity is creating a waste the cost to the suppliers exceeds. The value of those units to the demanders. So the subsidy creates a deadweight loss there s too much trade going on as opposed to the tax where the tax reduces beneficial trades.
The subsidy increases wasteful trades. Okay take a good look at this diagram make sure you understand each part of the diagram and we re going to give some applications and give a few more ways of looking at this diagram. But this is really the key idea everything in this diagram right here do you remember our intuition for who bears the burden of a tax. It s that elasticity is like escape so the more elastic.
The demand curve the more the demanders are able to escape the tax. The more elastic. The supply curve relative to the demand curve. The more able the suppliers are to escape.
The tax here i want to give you a similar intuition and way of reminding yourself about what happens with the subsidy and that is when you have no elasticity or when you have an inelastic curve. Then there s no entry no elasticity equals. No entry and when there s no entry that s when you gain the benefits of the subsidy. When no one can come in to take the subsidy you get the benefit so when there s no elasticity.
No entry. You get the benefit of the subsidy. Let s take a look let s redo our tax analysis. So suppose we have a fairly elastic demand curve and a fairly inelastic supply curve and here s our tax wedge.
We drive it in the diagram and what we see is that the suppliers bear more of the burden of the tax. That is the price to them falls. They re bearing the brunt of the tax because the suppliers have nowhere else to go they can t take their resources used to produce this good and use it to produce other goods in the economy. The supply is relatively fixed.
The resources are most useful for producing this particular good so the suppliers cannot escape for the very same reasons. The suppliers will get most of the gains of a subsidy. So here s our subsidy wedge. We drive it in to the diagram we could read off the diagram here that the price to the suppliers is going to rise much more than the price to the buyer falls relative to the market price.
So what s going on well what s going on is that we have this subsidy. But because the supply curve is inelastic. We don t see a lot of resources coming from elsewhere in the economy to grab up that subsidy to take that subsidy. The resources in the rest of the economy are not good at producing this type of good so it s only the resources.
Which are already in this market. The fixed resources they re the ones. Which are going to grab up the subsidy. The price is going to go up because we don t have a lot of resources coming from other areas of the economy to produce this good or we can think about this from the point of view of the demanders when the demand is relatively elastic they can escape the tax.
But similarly when the demand is elastic the demanders from other parts of the economy with the substitute goods. They re going to come in and grab up that subsidy. They re going to keep the price high because demanders are going to stop consuming. The substitute good and they re instead going to move into this market to consume this good and because you get all of these demanders from elsewhere in the economy.
Coming in to buy this good. The price doesn t fall. Very much okay once again play around with this draw some demand and supply curves put in a tax wedge put in a subsidy wedge. Until.
This all becomes intuitive. And remember that in the case of subsidies. No elastic or less elastic means less entry less entry means more gains to the subsidy. They get more of the benefits of the subsidy.
Let s do an application farmers in california s central valley get a big water subsidy. They typically pay 20 to 30. An acre foot for water that costs 200 to 500. An acre foot to produce so who benefits the most from this subsidy is it the california cotton suppliers or is it the buyers of california cotton let s think about it this way the buyers of california cotton.
What kind of substitutes do they have are they going to have an elastic demand or an inelastic demand. The buyers of california cotton are going to have a very elastic demand right because they can substitute cotton grown in georgia. They can substitute cotton grown in pakistan in india in many other places in the world in fact. The price of cotton is basically set in a world market.
So if we have a subsidy for california cotton suppliers. That s not going to push the world price down. Very much at all it s simply going to induce some buyers to buy more california cotton and a little bit less of cotton from pakistan or from india on the other hand. The california cotton suppliers.
They ve got a pretty inelastic supply curve. There s not that much land there to begin with and it s really pretty fixed for growing agricultural goods and probably fairly fixed for growing cotton. So the california cotton suppliers are going to get most of the benefits of this subsidy. It s not going to lower the price of pants at the gap instead.
It s going to go into the pockets of the california cotton suppliers of the farmers not surprisingly it s the farmers in california who lobby extensively for this subsidy and it s not the consumers of cotton so as we ve just shown subsidies can often be wasteful and one of the reasons that we have subsidies is politics the power of special interest groups in lobbying and so forth. We ll talk more about that another time however subsidies can also be useful. Particularly if there s a reason. Why the demand for a good understates.
The true value of that good we ll give lots of examples of this type of thing when we come to talk about externalities. But before we do that i want to give you one more example. Where this should be fairly intuitive and that s wage subsidies. So the next lecture.
We ll look at wage subsidies for unskilled or lower skilled workers and we ll compare that with the minimum wage thanks narrator. If you want to test yourself click practice questions or if you re ready to move on just click next video music. ” ..
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