Some Observations on the Concept and Measurement of Income Inequality

Income inequality and redistribution have become popular subjects in both public and policy circles in the wake of concerns over apparent concentration of wealth. However, a reasonable discussion of this subject is often hampered by a lack of a clear conceptual framework and relevant facts. First, income inequality is a relative concept that can only be measured relatively by statistical tools like the Gini coefficient; used alone, these do not provide context for the results. Second, there is no single agreed-upon goal for income redistribution; different approaches invariably involve value judgments based on ethical or political theories that can differ widely on the crucial questions of why and how much redistribution should be sought. Third, the importance of this issue requires that measurements of the scale and absolute amount of existing income redistribution be utilized to inform the discussion. This communiqué takes a sober look at facts relating to income inequality and redistribution in Canada and applies methodology to reveal that, while the scale of income redistribution has declined since 1994, growth in real income since then has done much to compensate in maintaining levels of absolute income redistribution that are high by historical standards