The shadow economy is the bane of modern society. Paradoxically, as the community is poorer, the level of the shadow economy is higher, which in turn leads to lower allocations in the budget, and as a consequence reduces social benefits, reducing the real wages of public sector employees, and the decline in living standards. Therefore, evaluation of the shadow economy is actual for any country in the world. The purpose of research is assessment of the shadow economy in the Republic of Moldova for 2014. From the methodological point of view, the authors used input-output balance method to identify and assess non-observed economy. As a result, the authors had identified elements of non-observed economy for a product group, and had calculated the losses of the state budget.