Sixth Council Directive 77/388/EEC of 17 May 1977 on the harmonization of the laws of the Member States relating to turnover taxes - Common system of value added tax: uniform basis of assessment
Modified by
Council Directive 2006/69/EC of 24 July 2006 amending Directive 77/388/EEC as regards certain measures to simplify the procedure for charging value added tax and to assist in countering tax evasion or avoidance, and repealing certain Decisions granting derogations