This figure is based on purchasing power parity (PPP), which basically suggests that prices of goods in countries tend to equate under floating exchange rates and therefore people would be able to purchase the same quantity of goods in any country for a given sum of money. That is, the notion that a dollar should buy the same amount in all countries. Hence if a poor person in a poor country living on a dollar a day moved to the U.S. with no changes to their income, they would still be living on a dollar a day.

The new poverty line of $1.25 a day was recently announced by the World Bank (in 2008). For many years before that it had been $1 a day. But the $1 a day used then would be $1.45 a day now if just inflation was accounted for.

The new figures from the World Bank therefore confirm concerns that poverty has not been reduced by as much as was hoped, although it certainly has dropped since 1981.

However, it appears that much of the poverty reduction in the last couple of decades almost exclusively comes from China:

China’s poverty rate fell from 85% to 15.9%, or by over 600 million people

China accounts for nearly all the world’s reduction in poverty

Excluding China, poverty fell only by around 10%

The use of the poverty line of $1 a day had long come under criticism for seeming arbitrary and using poor quality and limited data thus risking an underestimate of poverty. The $1.25 a day level is accompanied with some additional explanations and reasoning, including that it is a common level found amongst the poorest countries, and that $2.50 represents a typical poverty level amongst many more developing countries.

The $10 dollar a day figure above is close to poverty levels in the US, so is provided here to give a more global perspective to these numbers, although the World Bank has felt it is not a meaningful number for the poorest because they are unfortunately unlikely to reach that level any time soon.

For further details on this (as well as some additional charts), see Poverty Around The World on this web site. back