Inflation, a general increase in prices over time, disproportionately harms the poor.
A 2011 U.K. study found that between 2008 and 2010, the poorest fifth of Britons experienced an inflation rate 1.6 percentage points higher than the richest fifth due to low mortgage rates, which benefit property owners, and increases in the price of gas, electricity and food, which “hit poorer households harder.”
A 2014 U.S. analysis found that between 2012 and 2014, the poorest fifth of Americans experienced an inflation rate 0.2% higher than the national average, which caused “hundreds of dollars a year in extra costs” for those “least able to afford it.”
A 2000 World Bank analysis stated that “high inflation tends to lower the [income] share of the bottom quintile and the real minimum wage—and tends to increase poverty,” with inflation outpacing wage gains among the poor.