Pigouvian TaxesCourse NumberStudent’s NameDate PIGOUVIAN TAXESINTRODUCTIONThe question of what constitutes the expense of the product is one of the traditional ones for economics. He was interested in many economists, although the concepts of cost, value, price (essential for economics in general and all of its areas and branches) were basic for political economy, they had different meanings. Naturally, depending on the interpretation of the basic concepts, ideas about those components were formed, the whole of which quantitatively expresses the corresponding concept. Explicit or understood presentation of value as an aggregate of components is not always, however often (Kay, Say, Ricardo, Marx) correlated with ideas about the structure of the economy and even more so with the description of this structure. Mismatch of the theory and practice of the market is a traditional problem in terms of the application of economic knowledge in practice. One of the reasons for this is the external effects that violate the conditions of the model pricing conditions. In modern economic theory, external effects (externalities) are understood as the effect of individual activity on the welfare of outsiders that are not subjects of this activity, not reflected