Chapter six is titled "Supply, Demand, and Government Policies". The three main methods used by the government discussed in the chapter are price ceilings, price floors, and taxes. A price ceiling is a maximum price that a good can reach, whereas the price floor is the minimum price for a good to be sold. When the price is below the price ceiling, the price ceiling is not binding because there would not be a shortage (in which case the ceiling would be called a binding constraint on the market). As previously stated in chapter five, OPEC could not keep their oil prices high. Through chapter six, we are told that this is due to the fact that a price ceiling that was previously not binding became binding.
Somewhat like a price ceiling, price floors are a bit like the opposite. Price floors become binding when there is a surplus, unlike price ceilings, which become binding when there is a shortage. This relates back to chapter one, when it is stated that one of the principles are that government interference and SOMETIMES be good for the market. Chapter six delves into how the government’s interference could be detrimental to the market by causing either a surplus or shortage.
The final topic discussed in chapter six is tax. Tax impacts the market significantly not only because they are always imposed by the government to increase revenue, but because they have a stronger effect on the market. Taxes would reduce the equilibrium quantity of a good due to firms not wanting to make too many goods to avoid paying too much tax.
An idea within tax is incidence of tax and its relation to tax burdens. The incidence of a tax is the division of a tax burden between buyers and sellers, and it depends on the price elasticities of both supply and demand. Similarly to tax incidence is tax burden, which basically is how buyers would pay less for a good and sellers would receive less revenue when a tax is imposed because some of the money goes to the government.