This indicator tracks the distribution of personal incomes, by census subdivision, using the Gini Index. The Gini Index is a measure of inequality (OECD, 2008). The RDI’s analysis calculates Gini coefficients for market (pre-tax) incomes and therefore does not consider the effect of taxes and social spending on income inequality. Data for this indicator are gathered from Canada Revenue Agency’s taxfiler statistics and are current to 2010.