A
Lindahl tax is a form of
taxation in which individuals pay for
public goods according to their
marginal benefits. In other words, they pay according to the amount of satisfaction or
utility they derive from the consumption of an additional unit of the public good. It can be seen as an individual's share of the collective tax burden of an economy. The optimal level of a public good is that quantity at which the
willingness to pay for one more unit of the good, taken in totality for all the individuals is equal to the
marginal cost of supplying that good. Lindahl tax is the optimal quantity times the willingness to pay for one more unit of that good at this quantity. Erik Lindahl was deeply influenced in this by
Knut Wicksell and proposed a method for financing public goods in order to show that consensus politics is possible. As people are different in nature, their preferences are different, and consensus requires each individual to pay a somewhat different tax for every service, or good that he consumes. If each person's tax price is set equal to the marginal benefits received at the ideal service level, each person is made better off by provision of the public good and may accordingly agree to have that service level provided.
Lindahl equilibrium Lindahl equilibrium is a state of
economic equilibrium under a Lindahl tax as well as a method for finding the optimum level for the supply of public goods or services that happens when the total per-unit price paid by each individual equals the total per-unit cost of the public good. It can be shown that an equilibrium exists for different environments. Therefore, the Lindahl equilibrium describes how efficiency can be sustained in an economy with personalised prices.
Leif Johansen gave the complete interpretation of the concept of "Lindahl equilibrium", which assumes that household consumption decisions are based on the share of the cost they must provide for the supply of the particular public good. The necessary and sufficient condition for such an
equilibrium being: • (i) the sum of the declared willingness be greater than the cost of provision and • (ii) the minimum willingness to pay is positive and non-zero. The importance of Lindahl equilibrium is that it fulfills the
Samuelson condition and is therefore
Pareto efficient, ==Major works of Erik Lindahl==