In the Value Added Tax (VAT) system some goods and services, such as banking services, are exempted from taxes. Based on theoretical foundations, exempt treatment leads to several distortions and inefficiencies in the economy. In order to understand the importance of exemption on macroeconomic fluctuations as well as the fundamental role of financial intermediaries in economy shocks, this study...

A fundamental distinction between goods and services is that in the retailing of goods and some services the costs of production and distribution are clearly separable in a non-arbitrary fashion, usually identified as costs of goods sold. They have type I separability. Distribution services, which are also known as attributes, marketing mix or output variables, are produced, distributed and con...

this paper represents a theoretical model from which the supply function for a durable goods is derived. it turns out that consumer at the equilibrium condition equates its user cost with the marginal value of services received by using an additional unit of durable goods. the stock price is obtained from this condition. in addition, at the equilbrium condition for producer, the stock price is ...