The IMF Working Papers series is designed to make IMF staff research available to a wide audience. Almost 300 Working Papers are released each year, covering a wide range of theoretical and analytical topics, including balance of payments, monetary and fiscal issues, global liquidity, and national and international economic developments.
Javier Ruiz Castillo, Eduardo Ley, and Mario Izquierdo
INTERNATIONAL MONETARY FUND
We define the plutocratic bias as the difference between inflation measured according to the current official CPI and a democratic index in which all households receive the same weight. We estimate that during the 1990s the plutocratic bias in Spain amounts to 0.055 percent per year. However, positive and negative biases cancel off when averaging over the whole period. The mean absolute bias is significantly larger, 0.090. We can explain most of the oscillations experimented by the plutocratic bias by the price behavior of three goods: a luxury good and two necessities.