(4)The attainment of the objective of establishing an internal market presupposes the application in Member States of legislation on turnover taxes that does not distort conditions of competition or hinder the free movement of goods and services. It is therefore necessary to achieve such harmonisation of legislation on turnover taxes by means of a system of value added tax (VAT), such as will eliminate, as far as possible, factors which may distort conditions of competition, whether at national or Community level.