Concept
In economics, a negative income tax (NIT) is a system which reverses the direction in which tax is paid for incomes below a certain level; in other words, earners above that level pay money to the state while earners below it receive money, as shown by the blue arrows in the diagram. NIT was proposed by Juliet Rhys-Williams while working on the Beveridge Report in the early 1940s and popularized by Milton Friedman in the 1960s as a system in which the state makes payments to the poor when their income falls below a threshold, while taxing them on income above that threshold. Together with Friedman, supporters of NIT also included James Tobin, Joseph A. Pechman, and Peter M. Mieszkowski, and even then-President Richard Nixon, who suggested implementation of modified NIT in his Family Assistance Plan. After the increase in popularity of NIT, an experiment sponsored by the US government was conducted between 1968 and 1982 on effects of NIT on labour supply, income, and substitution effects. The view that the state should supplement the income of the poor has a long history (see ). Such payments are seen as benefits if they are limited to those who lack other income, or are conditional on specific needs (such as number of children), but are seen as negative taxes if they continue to be received as a supplement by workers who have income from other sources. The withdrawal of benefits when the recipient ceases to satisfy a firm eligibility criterion is often seen as giving rise to the welfare trap. The level of support provided to the poor by a negative tax is thought of as parametrically adjustable according to the opposing claims of economic efficiency and distributional justice. Friedman's NIT lacks this adjustability owing to the constraint that other benefits would be largely discontinued; hence a wage subsidy is more representative of generic negative income tax than is Friedman's specific Negative Income Tax. In 1975 the United States implemented a negative income tax for the working poor through the earned income tax credit.
