Purpose:

To analyze the contribution that social stratification provides to inequality using the Gini index as an input.

Methodology:

The compatible differences tool was used to calculate the percentage of income provided by social strata using the Gini index; to verify the efficiency of the proposed methodology, real data from different countries were considered.

Results:

Since compositional data were obtained as results, it was possible to estimate and predict the proportion of the contributions of the strata to inequality, evidencing the importance of social stratification in the classes.

Limitations:

The measurement of inequality to construct the Gini index has different methodologies worldwide, which represented a difficulty in making comparisons.

Findings:

The methodology that we developed in this article allowed us to know the weight that different social strata contributes to inequality; this is especially important since it can be a tool that helps decision-makers to take more effective measures to counteract inequality.