Scarce and inconsistent household spending data make it difficult to measure inequality in West Africa. Using a novel framework that combines Survey-to-Survey Imputation Techniques (SSITs) with Generalized Additive Models for Location, Scale, and Shape (GAMLSS) applied to labor force surveys across eight nations, this study reconstructs inequality patterns in the Sahel from 2003 to 2021. The findings show ongoing inequality, significant regional differences, and a substantial correlation between patterns of inequality and periods of political instability or violence. In terms of methodology, the SSIT-GAMLSS model offers a flexible design with two layers of random effects; substantively, the study offers fresh empirical data on the dynamics of inequality in West Africa.