Abstract
Regardless of the period of time to which we refer, the demand for money practically reflects the desire of economic entities, organizations but also individuals to own resources, especially money and the attractiveness for a certain amount of money. This attractiveness can be seen in parallel with the amount of goods and services that can be purchased with that amount. There are two basic approaches related to the long-term vision. One is the Keynesian approach, which emphasizes the relevance of the claim for money in economics and the motivations for possession it, and the other is the monetarist approach that emphasizes the strong effects of monetary policy on economic activity. The second category also includes the quantitative theory of money ‒ Irving Fisher’s equation. In our days, these choices are theoretical notions based on various methodological points of view. This article aims to present the evolution of theories regarding the value and determinants of money, its impact on the economy and the principles of the quantitative theory of money as presented by Irving Fisher. At the same time, the monetary situation in Romania in relation to the quantitative theory of money is exemplified by statistical data collected from official sources.