Market Failure And Externalities Flashcards
Why may the market fail
If less than optimum allocation of scarce resources resulting in a welfare loss in society
Productive efficiency
Producing goods and services at the lowest possible cost
Allocative efficiency
The goods and services match the wants and needs of consumers
Externalities
By product from the production and consumption that affects a 3rd party for which no compensation is paid
Eg. Pollution factories(production) or car driving (consumption)
Cigarettes- passive smoking,
Mpc
Marginal private cost
Cost to an individual or firm
Eg. Car manufacturing components
Mec
Marginal external cost
Cost to 3rd parties
Eg. Pollution- cost cleaning up
Msc
Marginal social cost
Overall cost to society
Msc= mpc+ mec
Mpb
Marginal private benefits
Benefit to an individual ir firm
Eg., car manufacturer- profit
Meb
Marginal external benefits
Benefit to 3rd parties
Eg, employment. Tax revenues
Msb
Marginal social benefit
Overall benefit to socity
Msb= mpb + meb
Mpb+ externalities=msb
What should ideally take place
Msb=msc
Cost=benefit
-allocative inefficiency
Demerit good diagram
Mpb above msb line
Private to private and shade
Merit good diagram
Msb above mpb
Private to private and draw down (left of line)
Merit good- consumption
If left to the free market the social benefit exceeds the private beneift
Meaning there is a potential welfare gain to society
Merit good is undercnosumed as social optimum is msb+msc
Polution taxes
Increases mpc for conusmer or producer- depends whos being taxed - decrease demand, hopefully decrease level production
-some argue that revenue from pollution taxes should be ‘ring fenced’ for the protection and enhancement of the environment
W/out taxes at q, social optimum is exceeded
What should level of taxation ideally be
=external cost
Consumers pay full social cost
Tax internalise externality, bring back into price mechanism- higher cost
How can taxation lead to gov failure
-right level of taxation
Consumer welfare effects
Employment and investment
Right level of taxation- how can lead to gov failure
So private cost is exactly equated with social cost, insufficient or too excessive
Consumer welfare ffect- pollution taxes
Producer may pass on tax to consumer fi demand is inelastic
Therfore tax has small effect on reducing demand
Regressive efect lower incomes
Employment and investment- pollution taxes
If polution taxes increase one can producer may move to country wiith lower taxes- structural unemployment
Pros of industry regulation- demerit
Act as spur for businesses to cut co2 emissions
Regulations more effective if demand is unresponsive to tax/price changes
Can be gradually toughened each gov- helps stimulate
Cons industry regulation - pollution
High cost enforcemnt/administration of laws
Can lead to unwanted consequences
Cost of meeting regulations may discourage small businesses and lower competitive in markets
Tradgedy of the commons
A resource has no ownership
Carbon trading
Firms buy and sell limited ability to pollution
Caps made by countries- incentive to produce less
Pollute over fine- pollute under- can sell