A method for getting a more standardized measure of tax capacity than personal income is called the?

The approach described in the question is best represented by the concept known as the Representative Tax System. This method aims to create a more uniform measure of tax capacity across different regions or jurisdictions, facilitating comparisons and equitable tax assessments. The Representative Tax System assesses a jurisdiction’s ability to generate revenue based on a standardized framework, taking into account various factors such as property values and other economic indicators, rather than solely focusing on personal income.

This method is particularly useful because it seeks to normalize potential discrepancies that may arise from differing income levels in a population. By emphasizing a broader view of tax capacity, the Representative Tax System provides policymakers and assessors with a more comprehensive tool for evaluating fiscal capabilities and addressing equity in taxation.

Other options, such as Flat Tax System, Progressive Tax System, and Regressive Tax System, focus more on the structure of tax rates or the distribution of tax burdens among different income groups, rather than providing a standardized measure for assessing tax capacity across jurisdictions. They do not directly address the need for a uniform approach to comparing tax abilities, which is the critical focus in the context of the question.