This article makes a contribution to the empirical and methodological discussion on the standard of living in Latin America during the colonial period. It presents evidence obtained from primary sources on the evolution of nominal wages, cost of living and real wages for 10 occupational categories in the region of Montevideo between 1760 and 1810. The results place rural laborers and masons in Montevideo below subsistence levels until at least the first decade of the 19th century, a finding that is difficult to reconcile with the demographic and productive growth of the region at the same time. Wages may not be the main component in the structure of family income among the subordinate sectors of the colonial Río de la Plata.