Poverty is the state of having few material possessions or little income. Poverty can have diverse social, economic, and political causes and effects. When evaluating poverty in statistics or economics there are two main measures: absolute poverty compares income against the amount needed to meet basic personal needs, such as food, clothing, and shelter; relative poverty measures when a person cannot meet a minimum level of living standards, compared to others in the same time and place. The definition of relative poverty varies from one country to another, or from one society to another.Statistically, as of 2019, most of the worlds population live in poverty: in PPP dollars, 85% of people live on less than $30 per day, two-thirds live on less than $10 per day, and 10% live on less than $1.90 per day (extreme poverty). According to the World Bank Group in 2020, more than 40% of the poor live in conflict-affected countries. Even when countries experience economic development, the poorest citizens of middle-income countries frequently do not gain an adequate share of their countries increased wealth to leave poverty. Governments and non-governmental organizations have experimented with a number of different policies and programs for poverty alleviation, such as electrification in rural areas or housing first policies in urban areas. The international policy frameworks for poverty alleviation, established by the United Nations in 2015, are summarized in Sustainable Development Goal 1: "No Poverty".
Proponents argue that a basic income is more economically efficient than a minimum wage and unemployment benefits, as the minimum wage effectively imposes a high marginal tax on employers, causing losses in efficiency. In 1968, Paul Samuelson, John Kenneth Galbraith and another 1,200 economists signed a document calling for the US Congress to introduce a system of income guarantees. Winners of the Nobel Prize in Economics, with often diverse political convictions, who support a basic income include Herbert A. Simon, Friedrich Hayek, Robert Solow, Milton Friedman, Jan Tinbergen, James Tobin
and James Meade.Income grants are argued to be vastly more efficient in extending basic needs to the poor than subsidizing supplies whose effectiveness in poverty alleviation is diluted by the non-poor who enjoy the same subsidized prices. With cars and other appliances, the wealthiest 20% of Egypt uses about 93% of the countrys fuel subsidies. In some countries, fuel subsidies are a larger part of the budget than health and education. A 2008 study concluded that the money spent on in-kind transfers in India in a year could lift all Indias poor out of poverty for that year if transferred directly. The primary obstacle argued against direct cash transfers is the impractically for poor countries of such large and direct transfers. In practice, payments determined by complex iris scanning are used by war-torn Democratic Republic of Congo and Afghanistan, while India is phasing out its fuel subsidies in favor of direct transfers.