This study presents a comprehensive policy analysis of Project Okusevinga, Uganda's nationwide savings mobilization initiative launched under the Parish Development Model, examining its effectiveness in promoting household human capital investments across education, health, and skills development in the context of Uganda's broader sustainable development agenda. Employing a mixed-methods research design, the study analyzed data from 2,400 households across 12 districts in Uganda's four major regions, combining quantitative cross-sectional household survey data collected between June and September 2023 with qualitative insights drawn from 45 key informant interviews and six focus group discussions, utilizing univariate, bivariate, and mixed effects regression analyses to account for the hierarchical nesting of households within parishes and districts. The quantitative findings reveal statistically significant associations between Project Okusevinga participation and enhanced human capital investments: participants demonstrated 127% higher monthly savings (UGX 42,500 vs. UGX 18,700), 28.2% greater annual education expenditure per child, 30.6% higher out-of-pocket health expenditure, and 56.6% greater prevalence of skills training participation compared to non-participants. Multivariate mixed effects regression models confirmed that project participation independently predicted 32.8%, 22.6%, and 29.9% increases in education, health, and skills training investments respectively, even after controlling for household income, parental education, geographic location, and community-level infrastructure factors. Bivariate correlation analyses further revealed moderate-tostrong positive associations between monthly savings amounts and all human capital investment indicators (r = 0.358– 0.487, p