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The consumer's surplus is highest at the largest number of units for which, even for the last unit, the maximum willingness to pay is not below the market price. Consumer surplus can be used as a measurement of social welfare, shown by Robert Willig. [8] For a single price change, consumer surplus can provide an approximation of changes in welfare.
Deadweight loss is the reduction in social efficiency (producer and consumer surplus) from preventing trades for which benefits exceed costs. [2] Deadweight loss occurs with a tax because a higher price for consumers, and a lower price received by suppliers, reduces the quantity of the good sold. [ 2 ]
The producer surplus always decreases, but the consumer surplus may or may not increase; however, the decrease in producer surplus must be greater than the increase, if any, in consumer surplus. Deadweight loss can also be a measure of lost economic efficiency when the socially optimal quantity of a good or a service is not produced.
In economics, an excess supply, economic surplus [1] market surplus or briefly supply is a situation in which the quantity of a good or service supplied is more than the quantity demanded, [2] and the price is above the equilibrium level determined by supply and demand. That is, the quantity of the product that producers wish to sell exceeds ...
Products can be physical goods, immaterial services and most often combinations of both. The characteristics created into the product by the producer imply surplus value to the consumer, and on the basis of the market price this value is shared by the consumer and the producer in the marketplace. This is the mechanism through which surplus ...
The consumers' price will be equal to the producers' price plus the cost of the tax. Since consumers will buy less at the higher consumer price (Pc) and producers will sell less at a lower producer price (Pp), the quantity sold will fall from Qe to Qt. Diagram illustrating taxes effect
The fundamental assertion is that there is a maximum amount that "a consumer will give up, of one commodity, to get one unit of another good, in that amount which will leave the consumer indifferent between the new and old situations" [9] The negative slope of the indifference curves represents the willingness of the consumer to make a trade ...
Perfect factor mobility: In the long run factors of production are perfectly mobile, allowing free long term adjustments to changing market conditions. This allows workers to freely move between firms. [9] Perfect information: All consumers and producers know all prices of products and utilities they would get from owning each product. This ...