Gendered division of responsibilities and activities is traditionally anchored in Maasai culture. With the changing socio-economic and natural environment, a diversification of livelihood strategies is observe by researchers. This found to induce intra-household changes. It is yet unclear how women and men contribute to household income and who benefits from milk sales as women's main income activity. Based on theoretic considerations, we use data of Maasai households living in Morogoro region, Tanzania, to address these questions by assessing respective income shares and milk commercialization. Our findings suggest that with increasing access to milk markets women contribute 39%, 52% and up to 57% of total income. Further, our results indicate that most women control the direct use of milk income. COnsidering indirect effects, this income benefits one fifth of women respondents. Supplementary housekeeping money is mostly spent on diversifying and increasing food purchases.