The purpose of this article is to perform an incursion into the monetary theories, from the mercantilists to the modern theories. The monetary area is an important component of the economic system which has always been and still is tormented by anxiety and uncertainty. The currency can be considered a barometer that promptly and precisely registers a country’s economic oscillations and the fundamental problems that torment the human society nowadays is mainly expressed in monetary terms.

Being one of the major tools the state uses to balance the economy, the monetary politics has permanently generated fervent controversies and discussions. Scientific research of the monetary phenomenon, facing the complexity of the currency problems with a diversity of currency types and with the complex currency role within the company, as well as the explosive evolution of the financial institutions, structures and monetary and financial products has always kept the monetary theory in the beginning of a new research program.

The monetary theory center, around which the economists‘ thinking is founded, is formed of: emphasizing the money role in the economy, the money measurement, the money offer and request with their influence factors, the monetary balance theory, the monetary impulse transition modality as well as the monetary behavior on the part of the economic agents.

It was established that each economical thinking movement marked the social, economical and political life for a certain amount of time, each school has criticized or supported their predecessors’ ideas contributing to the enrichment of the monetary theory and the economic development, implicitly.