Properties of Suits Indexes
The Suits index has the useful property that the total Suits index of a group of taxes or policies is the revenue-weighted sum of the individual indexes. The Suits index is also related closely to the Gini coefficient. While a Gini coefficient of zero means that all persons receive the same income or benefit as a per capita value, a Suits index of zero means that each person pays the same tax as a percentage of income. Additionally, a Poll Tax has a Suits Index equal to the negative of the Gini coefficient for the same group.
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