1 . TAX PROVISIONS - HARMONIZATION OF LAWS - TURNOVER TAXES - COMMON SYSTEM OF VALUE-ADDED TAX - DUTIES OR CHARGES WHICH CANNOT BE CHARACTERIZED AS TURNOVER TAXES - CHARGE CALCULATED ON THE BASIS OF TOTAL ANNUAL TURNOVER AND COLLECTED FOR THE PURPOSE OF PROVIDING FINANCE FOR SOCIAL SECURITY SCHEMES ( COUNCIL DIRECTIVE 77/388 , ART . 33 )