This study assessed the impact of small-scale irrigation schemes in Ethiopia on the commercialization and performance of smallholder farms. It found that the intervention led to increased commercialization through higher crop diversification and sales. However, outcomes varied - while cash income increased for all, young and land-poor farmers sold a greater proportion of output but operated at smaller scales due to limited access to resources. The intervention helped reduce poverty but its benefits were greater for land-rich households. Institutional support is also needed to optimize commercialization for smallholders.