The main objective of this article is to determine the effect of public spending on intergenerational socioeconomic mobility (MI) in Argentina. Also analyzes their impact on the mobility gap observed between children from different socioeconomic backgrounds family. The identification strategy used is to exploit the temporal variability of public spending. The results suggest that public spending increases MI. This effect is higher when spending categories most directly related to the human capital of children and adolescents are increased. But the magnitudes of the estimated effects are modest.