The Law of 10 August 1915 on commercial companies is the primary legal framework governing company formation and operation in Luxembourg. Used for fund vehicle, Société Anonyme (SA), Société à Responsabilité Limitée (Sàrl), Société en Commandite Simple (SCS), Société en Commandite Spéciale (SCSp). Companies must be incorporated by notarial deed and registered with the Luxembourg Trade and Companies Register (RCS).